Climate of Iran

Last updated: April 14, 2025

Iran's climate is characterized by its remarkable diversity, ranging from extreme temperatures to varying precipitation levels across different regions. The mercury plunges to a chilling -28°C (-18°F) in February in Kordestān, while scorching summers see highs of 52°C (126°F) in July in Khuzestan. Precipitation amounts reveal significant contrasts as well, with 0 mm recorded in August in South Khorasan Province contrasting sharply with up to 225 mm (8.9 in) in November in Gīlān. Humidity levels also fluctuate, with a low of 12% in July in Bushehr rising to a humid 82% in January in West Azerbaijan. This complex interplay of temperature, precipitation, and humidity defines the rich tapestry of Iran's climate.

Iran Climate Zones

Iran's diverse geography gives rise to a rich tapestry of climate zones, classified under the Köppen-Geiger system. The Alborz Province features a mix of Mediterranean (Csa) and continental (Dsa) climates, while Ardabīl showcases a blend of cool temperate zones with both subarctic (Dsa, Dsb) and warm temperate (Cfa, Csa) climates. Bushehr and Hormozgan experience arid climates (BWh, BSh), contrasting with the cooler highland climates found in regions like Gīlān (Cfa, Dsb). The Zanjan province typifies the colder regions with Dsa and Dsb, while the Sistan and Baluchestan province emphasizes aridity with its dominance of BWh and BWk climates. From the lush green hills of Māzandarān (Csa) to the dry expanses of Yazd (BWh, BWk), Iran's climates offer a stunning variety that shapes its ecology and culture. Each province's climate not only dictates local agriculture and habitation but also contributes to the overall character of this ancient land. Explore more about each province through the provided links for an in-depth understanding of their unique climates.

Köppen-Geiger Climate Classification of Iran
Climate ZoneDescription
BShHot semi-arid climate with low rainfall and high temperatures.
BSkCold semi-arid climate with low rainfall and significant temperature variation.
BWhHot desert climate with extremely low rainfall and high temperatures.
BWkCold desert climate with low rainfall and cold temperatures.
CfaHumid subtropical climate with hot summers and mild winters.
CsaHot-summer Mediterranean climate with dry summers and wet winters.
DfaHumid continental climate with hot summers and cold winters.
DsaHot-summer Mediterranean-influenced humid continental climate with dry summers.
DsbWarm-summer Mediterranean-influenced humid continental climate with dry summers.

Iran Temperature by Month

Iran’s temperature fluctuates dramatically throughout the year, showcasing a diverse climate across its regions. In winter, temperatures can plummet to a chilling -28°C (-18°F) in Kordestān during February, while in the same month, Kerman enjoys warm highs of 34°C (93°F). As spring approaches, March brings a notable increase, with Sistan and Baluchestan reaching a scorching 41°C (106°F). The summer months of June and July see Khuzestan basking in extreme heat, hitting a blistering 52°C (126°F). By autumn, temperatures begin to cool, yet Khuzestan remains warm, peaking at 46°C (114°F) in October. Conversely, Isfahan and East Azerbaijan experience frigid minimums of -15°C (5°F) and -24°C (-11°F) in November and December, respectively. This stark contrast between the sweltering southern regions and the icy northern locales paints a vivid picture of Iran's climatic extremes, making it a place of remarkable weather diversity.

Monthly Temperatures in Iran

The chart illustrates Iran's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec323544546476817872574436
Data source: Iran temperature data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Precipitation Patterns in Iran

Iran experiences a diverse range of precipitation patterns throughout the year, reflecting its varied geography and climate. The country sees its lowest rainfall in August, particularly in the arid South Khorasan Province, where precipitation can plummet to a minimal 0 mm. In stark contrast, November brings the heaviest rainfall, especially in Gīlān, which can receive up to 225 mm. This trend can also be seen in terms of precipitation days, where Yazd records a dry June with no rainy days, while Gīlān enjoys a wetter October, experiencing up to 15 days of rain. Overall, these patterns highlight the sharp contrasts in climate across Iran, with some regions thriving under consistent rain while others languish in dryness.

Precipitation Trends in Iran

The chart illustrates Iran's yearly temperature patterns, showing data aggregated from various locations across the region, highlighting seasonal variations and monthly temperature changes.
JanFebMarAprMayJunJulAugSepOctNovDec3868567344914117304742
Data source: Iran precipitation data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Iran Humidity

Iran's humidity levels exhibit significant variation throughout the year, influenced by both geography and climate. In the peak of summer, July, the coastal city of Bushehr experiences a remarkable low with humidity dipping to just 12%, showcasing the arid conditions typical of the region during this season. Conversely, the winter months present a stark contrast, with January bringing humidity levels soaring to 82% in West Azerbaijan. This fluctuation highlights the diverse climatic landscape of Iran, where coastal and mountainous areas create distinct microclimates, affecting both the comfort levels and daily life of its inhabitants.

Average Humidity in Iran

Iran's Average Monthly Humidity Levels: This chart highlights Iran's humidity fluctuations throughout the year, making it easy to compare seasonal trends. See how humidity varies month by month and understand Iran's climate patterns.
JanFebMarAprMayJunJulAugSepOctNovDec71%69%70%65%66%65%57%46%51%64%73%71%
Data source: Humidity data for Iran generated using information from the Copernicus Climate Change Service.

Iran UV Index Trends

In examining the UV index trends across Iran, May stands out as a particularly intense month for sun exposure. In Golestan, the average daily maximum UV index reaches a notable 11, reflecting significant potential for skin damage. However, in Kerman, this intensity escalates sharply to an average daily maximum UVI of 15, indicating a more hazardous level of UV radiation. This stark contrast emphasizes the variation in UV exposure across different regions, highlighting the need for heightened awareness and protective measures during the sunniest months.

Maximum UV Index Levels in Iran

The chart shows the monthly maximum UV Index (UVI) in Iran, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec5710111313121110754
Data source: Iran UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Sunshine Duration in Iran

Iran's sunshine duration showcases significant regional variation throughout the year. For instance, in January, the northern city of Ardabīl records a modest 203 hours, while the southern province of Hormozgan basks in a more generous 246 hours. As spring approaches in May, Hormozgan experiences a remarkable increase in sunlight, totaling 377 hours, highlighting its sunny climate. This trend continues into the summer, particularly in West Azerbaijan, where July enjoys an impressive 413 hours of sunshine. These insights reveal how Iran's diverse geography influences its sunlight exposure, making it a fascinating study of climatic extremes.

Monthly Sunshine Duration in Iran

The Iran sunshine duration chart shows the total hours of direct sunlight in Iran each month, excluding cloudy or obstructed periods, and compares the sunshine duration across different months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec226h265h322h337h383h395h395h376h341h310h258h269h
Data source: Iran sunshine duration data aggregated from multiple country locations, generated using Copernicus Climate Change Service information.

Chance of Sun in Iran

The likelihood of sunny weather in Iran varies significantly by region and month. In September, for instance, residents in South Khorasan Province can bask in an impressive 99% chance of clear skies, ideal for outdoor activities and enjoying the harvest season. However, this brightness diminishes as the seasons change; by October, the chances drop to 31% in Gīlān, signaling the arrival of cooler, wetter conditions. This contrast highlights the diverse climatic experiences across Iran, making it crucial for travelers and locals alike to plan according to seasonal weather patterns.

Percentage of Sunny Days in Iran

The chart illustrates the percentage of sunny days in Iran throughout the year. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Iran experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec79%67%58%59%63%94%87%86%97%84%57%68%
Data source: Iran chance of sun data, generated using information from the Copernicus Climate Change Service.

Average Daylight Hours Across the Iran

In Iran's Ardabil, daylight hours exhibit a striking contrast between the seasons, showcasing the region's diverse climate. In December, residents experience a shorter day with only 9 hours of sunlight, inviting a serene atmosphere during the winter months. Conversely, the landscape transforms in June, as daylight stretches to an impressive 14 hours, fostering vibrant outdoor activities and a lively summer spirit. This seasonal variation highlights not only the unique characteristics of Ardabil's climate but also how the length of daylight can significantly influence daily life and cultural experiences throughout the year.

Average Monthly Daylight Hours in Iran

This chart shows the total daylight hours Iran receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h10h 51m11h 58m13h 6m14h 3m14h 31m14h 17m13h 26m12h 22m11h 13m10h 15m9h 44m
Data source: Iran daylight hours, calculated by summing the hours between sunrise and sunset for each day.

Climate Breakdown by Iran Region

Nestled in Iran, Alborz Province boasts a dynamic climate that transitions dramatically from the icy depths of winter to the sweltering summers. January and February often see temperatures plunge as low as -24°C (-11°F), while July brings a striking contrast, peaking at an impressive 41°C (106°F). Precipitation varies throughout the year, with April being the wettest month at 73 mm (2.9 in), creating a lush landscape amid the seasonal shifts. Humidity plays its part, reaching up to 73% in November but dropping to a comfortable 46% in the heat of August. For a deeper understanding of the unique climate in Alborz Province, visit Alborz Province climate.

The climate in Ardabīl, Iran, is characterized by sharp contrasts throughout the year. Winters can be very cold, with January temperatures plunging to a frigid -27°C (-17°F), while summers boast sizzling highs near 45°C (113°F) in July. Precipitation peaks in the spring, particularly in April, bringing an average of 74 mm (2.9 in) as the landscape awakens. Despite the seasonal variations, humidity remains relatively moderate, ranging from 56% in August to 79% in October, providing a unique atmospheric experience. To delve deeper into Ardabīl's distinctive weather patterns, explore more about the Ardabīl climate.

Bushehr, Iran, experiences a hot desert climate, characterized by scorching summers and mild winters. From May to August, temperatures often soar, reaching a blistering 50°C (122°F), while January provides a brief respite with averages around 17°C (62°F). Rainfall is scarce, especially in the summer months, with June and July witnessing virtually no precipitation. Humidity levels further dip during these peak summer months, dropping as low as 12% in July, creating an intense heat. For a more detailed look at the Bushehr climate, explore its monthly weather patterns.

The climate in Chaharmahal and Bakhtiari, Iran is characterized by its dramatic seasonal contrasts, with bitterly cold winters and warm summers. In January, temperatures can plunge to a chilling -23°C (-10°F) at night, while July boasts highs reaching 38°C (101°F). Precipitation peaks in the early months, with March receiving nearly 99 mm (3.9 in), gradually tapering off to a dry July with virtually no rain. The region experiences a varying humidity, from a fresh 56% in January to a dry 20% by mid-summer, making for a unique and diverse climate. For more detailed insights, visit Chaharmahal and Bakhtiari climate.

Nestled in the diverse landscape of East Azerbaijan, Iran, the climate showcases a striking contrast between the harsh winters and warm summers. January brings chilling temperatures, with lows dipping as low as -27°C (-16°F), while February warms slightly, marking the transition to a mild spring. April and May see delightful averages of 10°C (51°F) and 16°C (61°F) respectively, leading into the sweltering summer months where temperatures can surge to 42°C (108°F) in July. Despite the summer heat, an annual precipitation pattern enriches the region, particularly from March to May, enhancing its lush landscapes. For a deeper dive into the seasonal dynamics, explore the full East Azerbaijan climate.

Fars, Iran, experiences a dramatic range of temperatures throughout the year, from icy lows of -21°C (-6°F) in January to scorching highs of 47°C (116°F) in the summer months. Precipitation is primarily concentrated in the cold season, with February as the wettest month, receiving 69 mm (2.7 in) of rainfall, while the summer remains almost entirely dry. The humidity levels, particularly in the peak of summer, drop significantly to around 18%, contributing to a dry heat that is characteristic of the region. Meanwhile, cooler months bring slightly higher humidity, enhancing the winter chill. Discover more about the unique climate of this region in Fars climate.

Golestan, Iran, experiences a varied climate, with winter temperatures plunging as low as -13°C (10°F) in February, while summers can soar to a scorching 46°C (115°F) in July. The spring and autumn seasons provide a delightful transition, with temperatures ranging from the comfortable 11°C (51°F) in March to 38°C (100°F) in October. Humidity levels fluctuate throughout the year, peaking at around 74% in February and dropping to a refreshing 35% in August. Precipitation is significant from January to April, tapering off in the hotter months, making Golestan a fascinating blend of diverse weather patterns. For more detailed information, explore the Golestan climate.

Gīlān, Iran, experiences a dynamic climate characterized by cold winters and warm summers. In January, temperatures can plummet to as low as -17°C (2°F), with a notable average of 7°C (44°F), while July brings warmth, peaking at around 39°C (103°F). The region receives significant precipitation, particularly in the late autumn, with November seeing over 225 mm (8.9 in), contributing to its lush landscapes. Humidity levels fluctuate throughout the year, remaining relatively high in the winter months, creating a distinct and refreshing atmosphere. For more detailed information, explore the Gīlān climate.

Hamadān, Iran, experiences a dramatic climate characterized by cold winters and hot summers. In January, temperatures can plunge to as low as -24°C (-12°F), while summer months see highs soar to 40°C (104°F), particularly in July and August. This temperature variation accompanies a unique precipitation pattern, with the wettest months being April through July, yielding minimal rainfall in the scorching summer. Humidity levels fluctuate throughout the year, peaking at around 72% in winter and dropping to a mere 32% in August. For more insight into the area's climate trends, visit Hamadān climate.

Nestled along Iran’s southern coastline, Hormozgan experiences a dynamic climate that shifts dramatically throughout the year. Winters are mild, with January temperatures averaging around 18°C (64°F), while summer months can be scorching, reaching highs of up to 47°C (116°F) in July and August. Rainfall is scarce, primarily concentrated in the winter, with January and February receiving the most precipitation. The region enjoys relatively low humidity during the hot months, cooling slightly in the winter, making it a unique destination for those who appreciate a contrasting climate. For more insights on this intriguing climate, explore Hormozgan climate.

Nestled in the heart of Iran, Ilam Province experiences a diverse climate that ranges from bitter cold in winter to sweltering heat in summer. January kicks off with frigid temperatures, dipping as low as -18°C (0°F), while July can soar to a scorching 51°C (124°F). Rainfall patterns show a substantial peak in the early months, with February and March receiving nearly 100 mm (3.9 in) of precipitation, before transitioning into the dry summer months where July often sees no rain at all. Humidity fluctuates notably throughout the year, hitting a comfortable 57% in December and dropping to a mere 14% during the height of summer. For a comprehensive breakdown of the climate specifics, visit Ilam Province climate.

Isfahan, Iran, experiences a continental climate characterized by extreme temperature variations throughout the year. Winters can be biting, with January temperatures plummeting to a chilling -23°C (-9°F), while summers sizzle, especially in July, reaching highs of 47°C (117°F). Rainfall is quite limited during summer months, resulting in a dry and arid environment, while the late autumn and winter months see a moderate increase in precipitation. With humidity levels varying seasonally—markedly low in the summer and rising again in winter—Isfahan's weather can be both entrancing and challenging. For more details, explore the full Isfahan climate.

Kerman, Iran, experiences a dramatic temperature range throughout the year, with winter nights plunging as low as -16°C (3°F) and summer highs soaring to 49°C (120°F). January and February bring the most significant precipitation, while summer months tend to be dry, with humidity levels dropping to around 14% in July and August. The climate is characterized by hot, arid summers and mild winters, making it a unique destination for those seeking varied weather. For more detailed insights about the weather patterns, visit Kerman climate.

Kermānshāh experiences a dynamic climate characterized by sharp temperature fluctuations throughout the year. Winters can be quite frigid, with January lows dipping as low as -21°C (-6°F), while summer heat can peak dramatically, reaching up to 50°C (122°F) in July. Precipitation is most abundant in early months, with February receiving about 113 mm (4.5 in), but by summer, the region experiences a stark dry spell. The humidity varies from a damp 71% in December to a dry 24% in August, adding to the diverse climate experience. For more insights about the local weather patterns, visit Kermānshāh climate.

Khuzestan, Iran, experiences a distinct climate characterized by extreme temperature fluctuations throughout the year. Winter months, such as January and February, showcase chilly nights with lows dipping to -11°C (12°F), while average highs reach 31°C (88°F) by February. As spring arrives, temperatures soar, peaking at a sweltering 52°C (126°F) in both July and August. This region sees a significant drop in precipitation during the summer, with July recording less than 1 mm of rain, while November stands out with 122 mm as the wettest month. The combination of high temperatures and low humidity—plummeting to as little as 13% in summer—creates a harsh but fascinating climate throughout the year. For more details, check the Khuzestan climate.

Kohgiluyeh and Boyer-Ahmad experiences a diverse climate, characterized by its chilly winters and hot summers. In January, temperatures can plummet to a frigid -21°C (-5°F), while August often sees highs of 47°C (116°F), offering a stark contrast. Precipitation varies significantly throughout the year, with January and February receiving the most rainfall, making them the wettest months. Interestingly, humidity levels dip to as low as 17% in the summer, contributing to the region’s distinctly dry feel despite occasional winter rains. For a deeper dive into the region's weather patterns, check out the detailed Kohgiluyeh and Boyer-Ahmad climate information.

Kordestān, Iran, showcases a dramatic climate that transitions from biting cold in winter to sizzling heat in summer. January’s chill can plunge to as low as -24°C (-10°F), while July brings a stifling warmth with highs reaching 42°C (107°F). Precipitation varies significantly, with the wettest months occurring early in the year, particularly February, which records 102 mm (4.0 in). With notable humidity, especially in winter months, the region’s weather is as dynamic as its breathtaking landscapes. For a deeper dive into the region's climate patterns, visit Kordestān climate.

Located in western Iran, Lorestan Province experiences a diverse climate characterized by chilly winters and hot summers. In January, temperatures can plummet to a bone-chilling -24°C (-11°F), warming gradually to 18°C (65°F) by the month's end, accompanied by substantial precipitation peaking in early spring. As the seasons progress, summer months see average highs soar above 40°C (104°F), while humidity drops significantly, often reaching a mere 16% in July and August. This seasonal contrast, coupled with the landscape's rich flora and fauna, shapes the region's unique environment, making it a fascinating area to explore. To delve deeper into its weather patterns, visit Lorestan Province climate.

The climate in Markazi, Iran is characterized by stark contrasts, displaying a blend of extreme temperatures and varying humidity throughout the year. Winter months like January and February can plunge to -22°C (-8°F), while summers are sizzling, with July peaking at 42°C (107°F). Precipitation is typically concentrated in the spring, with April bringing the most rainfall at 61 mm (2.4 in), while summer months see a dramatic drop, sometimes nearing 0 mm. Despite the sweltering heat, humidity levels diminish significantly in the summer, dipping as low as 30% in August. For a comprehensive overview of this diverse climate, visit Markazi climate.

Māzandarān, Iran, boasts a diverse climate that shifts dramatically throughout the year. Winter months bring chilly temperatures, dropping as low as -17°C (2°F) in January, while consistently high humidity creates a crisp atmosphere. As spring unfolds, temperatures rise, reaching up to 34°C (93°F) by April, accompanied by increasing rainfall, particularly in the fall months when October and November see significant precipitation of 166 mm (6.5 in) and 163 mm (6.4 in), respectively. With its blend of warm summers, cool winters, and lush, rainy seasons, the region presents a captivating climate worthy of exploration. For more detailed insights, check the full Māzandarān climate.

Nestled in northeastern Iran, North Khorasan experiences a diverse climate, ranging from frigid winters to sizzling summers. In January, temperatures can plunge to a chilling -21°C (-6°F), but by July, the mercury can soar above 41°C (107°F), reflecting its extreme seasonal variations. The region also sees a noticeable shift in humidity throughout the year; with the wettest months being February and March, where precipitation peaks around 65 mm (2.6 in). Despite its arid summer months, the landscape remains dynamic, showcasing nature's resilience. For a deeper dive into the region’s climate, visit North Khorasan climate.

Nestled in the heart of Iran, Qazvīn experiences a dramatic climate that shifts from bitterly cold winters to sweltering summers. January and February greet visitors with freezing temperatures and significant precipitation, while March heralds the arrival of milder days with highs soaring up to 30°C (86°F). As spring unfolds, April and May exhibit warmth, boasting average temperatures around 19°C (66°F), before summer peaks in July with sweltering highs touching 42°C (107°F). Humidity tends to fluctuate throughout the year, with notably dry summer months in June and July, making Qazvīn's climate a captivating mix that showcases dramatic seasonal transitions; for an in-depth look, check out Qazvīn climate.

Nestled in a high desert environment, Qom, Iran, experiences a stark contrast in its seasonal temperatures. The year begins with chilly winters, where January can see nighttime lows drop to -11°C (13°F), rising to a pleasant average of 7°C (45°F) during the day. As spring blossoms, temperatures climb, particularly in May, when average highs reach a sweltering 26°C (80°F). Summers are intensely hot, with July peaking at an astonishing 45°C (113°F), while the dry climate keeps humidity relatively low from June to August. Despite its arid conditions, Qom sees a slight uptick in precipitation during the cooler months, contributing to a climate that is both challenging and fascinating. For more detailed insights, visit the Qom climate.

Nestled in northeastern Iran, Razavi Khorasan experiences a captivating range of temperatures throughout the year, with chilly winters where January can plunge to a bone-chilling -22°C (-7°F), while summers sizzle, peaking at an impressive 47°C (117°F) in July. The region's climate showcases a unique blend of dry heat and seasonal moisture, particularly in the spring months, where April brings about notable rainfall averaging 56 mm (2.2 in). Humidity levels vary dramatically, hitting highs of 65% in winter, contrasting sharply with the parched summer months when it plummets to as low as 18%. This extraordinary climatic tapestry makes Razavi Khorasan a fascinating destination for those curious about Iran's diverse weather patterns. For more in-depth insights, explore the Razavi Khorasan climate.

Semnan, Iran experiences a diverse climate, oscillating between the chill of winter and the intense heat of summer. January brings bitter temperatures, with lows dipping to -14°C (8°F), transitioning to warmer April days that can reach 34°C (93°F). The hottest months, July and August, see averages of 29°C (85°F) and maximums soaring to 44°C (111°F), while humidity shifts from a winter high of 68% to a summer low of just 38%. Most of the rainfall occurs in the spring, with April receiving about 40 mm (1.6 in), preparing the landscape for the sweltering months ahead. For more detailed insights, check out the comprehensive Semnan climate resource.

The climate in Sistan and Baluchestan showcases a striking contrast between its scorching summers and chilly winters. Temperatures soar to a blistering 50°C (122°F) in May through August, while January can see lows plunge to -7°C (20°F). Precipitation remains sparse year-round, with most months receiving less than 25 mm of rain, contributing to the region's arid landscape. The humidity is generally low, peak levels averaging around 44% in December but dipping to a mere 22% during the peak summer months. Explore more about this fascinating region's climate at Sistan and Baluchestan climate.

Nestled in eastern Iran, South Khorasan Province experiences extreme temperature variations throughout the year, ranging from frigid January lows of -16°C (3°F) to scorching highs of 45°C (113°F) in mid-summer. The climate showcases a semi-arid desert characteristic, with most precipitation occurring in the early months, peaking in March at 42 mm (1.6 in) before transitioning into drier summer months. Humidity levels also fluctuate, dropping as low as 13% during July and August, giving the region a distinctly arid feel. To discover more about this intriguing climate, check out South Khorasan Province climate.

Tehran experiences a continental climate characterized by dramatic temperature fluctuations throughout the year. Winter months, particularly January and February, can plunge to chilling lows of -23°C (-9°F), while summers can soar to scorching highs of 45°C (113°F) in July and August. Precipitation is most prevalent in the spring, with April seeing around 54 mm (2.1 in) of rainfall, whereas summer months are notably dry, receiving less than 10 mm (0.4 in) each. Humidity levels fluctuate as well, peaking in the winter and dipping to a comfortable 40% during the height of summer. For a more detailed look, visit the Tehran climate page.

The climate in West Azerbaijan, Iran is characterized by sharp seasonal contrasts, with bitterly cold winters and hot summers. January and February can see temperatures drop as low as -26°C (-15°F), while July and August often bring sweltering highs around 43°C (110°F), making the region a study in extremes. Precipitation is more abundant in the spring months, peaking in March and April with around 80 mm (3.2 in), while summer months remain relatively dry. Despite the harsh winters, the air tends to dry out as temperatures rise, reaching a low humidity level of just 40% in August. For a deeper dive into the region's weather patterns, visit West Azerbaijan climate.

Yazd, Iran, experiences a dramatic climate marked by hot summers and cold winters. In the peak of summer, temperatures can soar up to 47°C (116°F), while in January, they can plummet to -10°C (14°F), showcasing a significant seasonal contrast. With minimal precipitation—particularly from June to September, when it receives no rain at all—the city boasts a dry atmosphere, with humidity levels dropping to a mere 16% during the hottest months. The transitional seasons of spring and fall offer a more temperate climate, ideal for exploration. For a deeper understanding of Yazd's unique weather patterns, check out the detailed Yazd climate insights.

Zanjan, Iran, experiences a striking seasonal contrast, with winter temperatures dipping as low as -24°C (-11°F) in January and reaching highs of 39°C (103°F) in the peak of summer. Rainfall is most prevalent in the spring months, particularly in April, which receives an average of 89 mm (3.5 in), while the summer months see a significant drop in precipitation, averaging around 11 mm (0.4 in). Humidity fluctuates throughout the year, with winter months hovering around 75%, tapering to a more comfortable 49% in August. For a deeper insight into the unique climate of this region, visit Zanjan climate.

Summary and Key Takeaways on the Climate of the Iran

The climate of Iran exhibits remarkable extremes, as evidenced by its temperature range from a frigid -28°C (-18°F) in February in Kordestān to a blistering 52°C (126°F) in July in Khuzestan. This significant variation is mirrored in the precipitation patterns, where certain regions experience near-complete dryness, such as in August in South Khorasan Province, while others can be soaked with up to 225 mm (8.9 in) of rain in November in Gīlān. Furthermore, humidity levels fluctuate dramatically across the country, with July in Bushehr dipping to a mere 12% compared to a humid 82% in January in West Azerbaijan. These trends highlight the diverse and contrasting climatic conditions within Iran, making it a fascinating study of geography's impact on weather.