May Weather in Isfahan, Iran

Last updated: August 21, 2025

May in Isfahan, Iran showcases a delightful transition into warmer weather, characterized by a maximum temperature reaching 37°C (99°F) and a comfortable average of 23°C (73°F). Evenings cool down to a refreshing minimum of 8°C (47°F), offering a pleasant respite from the daytime heat. Although the month sees limited precipitation with just 13 mm (0.5 in) over approximately 3 days, humidity levels hover around 49%, creating a balanced atmosphere. This mix of warmth and occasional rains paints May as an ideal time for exploring Isfahan's rich cultural heritage while enjoying its vibrant spring ambiance.

May Temperature in Isfahan

In Isfahan, Iran, May marks a notable transition as temperatures rise significantly after the cooler months. With a minimum temperature of 8°C (47°F), the nights begin to feel pleasantly mild. The average temperature reaches 23°C (73°F), creating a comfortable backdrop for travelers exploring the city's rich history and stunning architecture. By midday, the mercury can soar to a maximum of 37°C (99°F), signaling the onset of summer's heat. This pattern showcases a sharp increase from the previous months, reflecting Isfahan's climate shift as it moves from the crispness of spring into the sweltering warmth of summer. As the days grow longer and hotter, May becomes an ideal time to enjoy the vibrant culture and outdoor wonders of this enchanting city.

May Weather in Isfahan: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Isfahan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isfahan, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec404654647384888577645043
Data source: Temperature data for Isfahan generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Isfahan

In May, Isfahan experiences a slight dip in precipitation, with 13 mm (0.5 in) of rainfall over the month, falling over 3 days. This trend marks a decrease from the more substantial rains of March and April, where totals reached 18 mm (0.7 in) and 17 mm (0.7 in), respectively. As the city transitions into the dry summer months, the precipitation drops sharply to nearly negligible amounts in June and beyond. The moderate rainfall in May serves as a gentle curtain call for spring, preparing the landscape for the arid heat that follows in July and August, when Isfahan sees no significant rainfall at all.

May Precipitation Trends in Isfahan

The chart displays monthly precipitation patterns in Isfahan, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Isfahan, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec811181713100032512
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Isfahan

In May, Isfahan experiences a noticeable dip in humidity, averaging around 49%, which is a decline from the 54% recorded in April. This trend marks the beginning of the city’s dry season, setting the stage for even lower humidity levels in the coming months. As summer approaches, June sees a striking drop to 37%, and by July, the air feels quite arid with just 24% humidity. Overall, May serves as a transitional month in Isfahan's climate, where the gradual decrease in humidity signals the end of spring and the onset of the hot, dry summer ahead.

May Average Humidity in Isfahan

This chart illustrates the average monthly humidity levels in Isfahan, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Isfahan is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec60%56%60%55%49%37%24%20%25%42%62%63%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Isfahan

As May rolls into Isfahan, Iran, the UV Index spikes to 13, marking an extreme exposure category that signals a significant shift from the preceding months. After gradually increasing from a moderate level of 5 in January, the trend shifts to very high levels in March and April, culminating in this peak intensity. With a burn time reduced to just 10 minutes, sun safety becomes paramount, prompting residents and visitors alike to take necessary precautions. As the sun reaches its zenith, understanding these trends is crucial for enjoying the beautiful outdoors safely. For detailed insights, check out Isfahan UV Index.

Maximum UV Index Levels in Isfahan for May

The chart shows the monthly maximum UV Index (UVI) for Isfahan in May, 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. In May, the maximum UV index in Isfahan typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5710101313121110964
Data source: Isfahan May UVI data generated using information from the Copernicus Climate Change Service.

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.

May Sunshine in Isfahan

May in Isfahan, Iran, witnesses a delightful surge in sunshine, with an impressive 382 hours of brilliant sunlight illuminating the city. This pattern reflects a gradual increase in hours as winter fades away, with March and April also showcasing significant sunlight with 344 and 347 hours, respectively. The sunny trend continues into June and July, peaking at 395 hours in the heart of summer before gracefully tapering off in August. This upward trajectory not only enhances the vibrant culture and historical richness of Isfahan but also invites both locals and tourists to bask in the beauty of its sunlit days. As the year progresses, each month’s sunshine hours tell a story, emphasizing Isfahan's captivating climate and the allure of its outdoor experiences.

Monthly Sunshine Duration in Isfahan: May Highlighted

The May sunshine duration represents the total number of hours Isfahan experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec240h291h344h347h382h392h395h379h348h327h285h294h
Data source: Isfahan May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Isfahan During May

As spring transitions into summer, the likelihood of sunny weather in Isfahan, Iran during May holds a promising 70% chance. While this marks a slight dip from April’s sunnier disposition of 61%, May still enjoys a healthy probability of bright days compared to earlier months like February and March, which see only 71% and 74% chances, respectively. This positions May as a delightful prelude to the sweltering summer months ahead, where June and July soar to a striking 94% and 90% chance of sunshine. Thus, May presents a lovely opportunity for visitors to experience Isfahan's beauty under generally clear skies before the peak heat arrives.

Percentage of Sunny Days in May in Isfahan

The chart illustrates the percentage of sunny days in Isfahan throughout the year, with May highlighted. 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 Isfahan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec87%72%74%61%70%94%90%85%98%93%65%65%
Data source: Isfahan May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Isfahan in May

In Isfahan, Iran, the daylight duration showcases a captivating rhythm throughout the year, steadily increasing as spring approaches. January kicks off with about 10 hours of daylight, gradually extending to 13 hours by May, where the days become noticeably longer and brighter. This trend peaks in June and July with a generous 14 hours of daylight, offering ample time for outdoor activities under the warm sun. As August rolls in, the daylight begins to taper off, transitioning back to 12 hours in September and gradually returning to 10 hours by December. This annual dance of light not only enriches Isfahan's vibrant culture but also invites residents and visitors alike to embrace the beauty of each season.

Average Daylight Hours in Isfahan for May

The chart illustrates the variation in daylight duration in Isfahan throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 14m11h11h 59m12h 59m13h 50m14h 15m14h 2m13h 18m12h 20m11h 19m10h 27m10h
Data source: Isfahan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Isfahan

In Isfahan, Iran, May experiences a gentle breeze, with an average wind speed of 2.3 m/s (5 mph). This subtle wind is characteristic of the transition period as the region moves from the cooler spring months into the warmer summer. Notably, the wind speed in May remains consistent with April and June, reflecting a stable climatic pattern. Throughout the year, the wind speeds peak in March and July at 2.8 m/s (6 mph) and 2.6 m/s (6 mph) respectively, indicating a seasonal uptick, while the winter months show a marked decrease, with speeds as low as 1.5 m/s (3 mph) in November and December. Overall, the gradual fluctuations of wind speed throughout the months not only enhance Isfahan’s charm but also provide a refreshing break from the often scorching heat of the summer.

Average May Wind Speed in Isfahan

The chart displays monthly wind speed patterns in Isfahan, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.92.82.42.3 m/s2.32.62.21.91.81.51.5
Data source: Isfahan May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Isfahan Compares to Other Months

Weather in Isfahan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Isfahan, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January exhibit stark contrasts in weather. In May, temperatures range from a mild 8°C (47°F) at night to a scorching 37°C (99°F) during the day, with an average of 23°C (73°F). The humidity hovers around 49%, and the month receives an average of 13 mm (0.5 in) of precipitation over just three days. In contrast, January experiences much colder temperatures, with nighttime lows plunging to -8°C (18°F) and daytime highs reaching only 18°C (66°F), averaging a frigid 4°C (40°F). The humidity is higher at 60%, but rainfall is lighter, totaling only 8 mm (0.3 in) over two days. For more detailed information on the January climate, check out Isfahan weather in January.

May and February exhibit notably different weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a scorching maximum of 37°C (99°F), with an average temperature of 23°C (73°F). On the other hand, February experiences a much colder climate, featuring a minimum of -8°C (18°F) and a maximum of 23°C (74°F), with an average of only 8°C (46°F). Both months see relatively low precipitation, with May recording 13 mm (0.5 inches) and February slightly less at 11 mm (0.4 inches), over three days of rain. However, February has a higher humidity level at 56% compared to May's 49%. For more detailed insights into February's weather, visit Isfahan weather in February.

In comparing the weather of May and March, it's evident that May offers significantly warmer temperatures, with average highs reaching 23°C (73°F) compared to March’s average of 12°C (55°F). May also boasts a higher maximum temperature of 37°C (99°F), while March's peak is 31°C (87°F). Moreover, May experiences less precipitation at 13 mm (0.5 in) over three days, whereas March sees slightly more rain at 18 mm (0.7 in) across four days. Additionally, May has a lower humidity level of 49% compared to March's 60%. For more detailed information about March weather, you can visit Isfahan weather in March.

In comparing the weather between April and May, we see a noticeable rise in temperatures as the seasons transition. April experiences a minimum temperature of 1°C (35°F) and an average of 18°C (64°F), peaking at 32°C (90°F). In contrast, May starts with a minimum of 8°C (47°F), averages a warm 23°C (73°F), and can reach highs of 37°C (99°F). Additionally, April receives slightly more precipitation, totaling 17 mm (0.7 in) over five days, while May sees only 13 mm (0.5 in) over three days. The humidity levels also differ slightly, with April at 54% and May at 49%. For more details about April's weather, check Isfahan weather in April.

May and June showcase a notable transformation in weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 37°C (99°F), with an average of 23°C (73°F) and an occasional 13 mm of precipitation over three days. The humidity is relatively moderate at 49%, contributing to a comfortable atmosphere. In contrast, June brings a significant increase in warmth, with temperatures soaring between 15°C (58°F) and 41°C (107°F), averaging 29°C (85°F). Furthermore, precipitation is virtually non-existent in June, recorded at only 1 mm over zero days, and humidity drops to a drier 37%. This shift marks June as a hotter, more arid month. For more specifics on June weather, check out Isfahan weather in June.

In May, temperatures in Isfahan range from a cool 8°C (47°F) to a warm 37°C (99°F), with an average of 23°C (73°F) and occasional precipitation of about 13 mm (0.5 in) over 3 days, resulting in a humidity level of 49%. In contrast, July experiences significantly warmer weather, with minimum temperatures starting at 16°C (62°F) and reaching a scorching maximum of 42°C (107°F), averaging around 31°C (88°F). Notably, July is markedly drier, receiving no precipitation at all and having a lower humidity level of 24%. For more details on weather patterns in Isfahan, check out Isfahan weather in July.

The weather in May is characterized by a wide temperature range, with minimums around 8°C (47°F) and highs reaching up to 37°C (99°F), making it a warm month with an average temperature of 23°C (73°F). In contrast, August experiences even higher temperatures, with an average of 29°C (85°F) and maximums soaring to 42°C (107°F), while maintaining a notably low humidity of 20%. May sees some precipitation, with about 13 mm (0.5 in) spread over three days, whereas August is completely dry, recording no rainfall. For more specific details on August weather, you can visit Isfahan weather in August.

May and September present contrasting weather patterns. In May, temperatures range from a cool 8°C (47°F) at night to a warm 37°C (99°F) during the day, with an average of 23°C (73°F). The month experiences some rainfall, with 13 mm of precipitation over about three days, and humidity levels at a moderate 49%. In comparison, September sees a slightly higher minimum temperature of 11°C (51°F) and an average temperature of 25°C (78°F), while maintaining the same maximum of 37°C (100°F). Notably, September is exceptionally dry with no recorded precipitation and much lower humidity at 25%. For more detailed insights into September weather, check Isfahan weather in September.

May and October exhibit notable differences in weather patterns. In May, temperatures range from a cool 8°C (47°F) to a scorching 37°C (99°F), with an average of 23°C (73°F). The month sees moderate precipitation of 13 mm (0.5 in) over approximately three days, with humidity levels at 49%. In contrast, October experiences milder temperatures, with a minimum of 3°C (37°F), an average of 18°C (65°F), and a maximum of 34°C (93°F). This month is characterized by minimal precipitation of just 3 mm (0.1 in) and no rainy days, alongside lower humidity at 42%. For more details on October's weather, visit Isfahan weather in October.

May and November present strikingly different weather patterns. In May, temperatures range from a pleasant minimum of 8°C (47°F) to a scorching maximum of 37°C (99°F), with an average of 23°C (73°F). The precipitation is relatively low at 13 mm (0.5 in) over just three days, and humidity sits at a comfortable 49%. In contrast, November experiences cooler conditions with temperatures ranging from a minimum of -4°C (24°F) to a maximum of 27°C (81°F), averaging just 10°C (50°F). Precipitation increases to 25 mm (1.0 in) across four days, accompanied by higher humidity at 62%. This seasonal shift illustrates a transition from the warmth of spring to the chill of late fall. For more details on November weather, visit Isfahan weather in November.

May and December present stark contrasts in weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a sweltering maximum of 37°C (99°F), with an average of 23°C (73°F). This month experiences relatively low precipitation at 13 mm (0.5 in) spread over 3 days, and humidity hovers around 49%. In sharp contrast, December sees much cooler weather, with temperatures dipping to a minimum of -6°C (21°F) and peaking at a mild 22°C (72°F), averaging just 6°C (43°F). It receives slightly less rainfall at 11 mm (0.5 in) over 2 days, but the humidity is higher at 63%. For more detailed information, you can check Isfahan weather in December.

Compare Isfahan's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Isfahan

In May, Isfahan welcomes a warm transition into summer, characterized by a blend of moderate temperatures and low precipitation. Unlike the chillier months that precede it, May delights with an average temperature of 23°C, making it ideal for exploring the city's stunning architecture and vibrant culture. The minimal rainfall, typically occurring on only a few days, adds to the allure, allowing visitors to enjoy the plentiful sunshine without worrying about sudden showers. With a pleasant humidity level of 49%, this month offers a comfortable climate that stands in stark contrast to the colder, wetter months earlier in the year. For a deeper dive into Isfahan's weather patterns throughout the year, check out Isfahan Climate.