December Weather in Isfahan, Iran

Last updated: August 21, 2025

December in Isfahan, Iran presents a captivating blend of winter charm, with temperatures ranging from a chilly -6°C (21°F) at night to a mild 22°C (72°F) during the day. The average temperature hovers around 6°C (43°F), making it a pleasant time for outdoor exploration. While precipitation is modest at 11 mm (0.5 in) over just 2 days, the air carries a refreshing humidity of 63%, enhancing the distinct winter atmosphere. Visitors can enjoy the city's rich history and stunning architecture, all while dressing warmly to embrace the season's cool embrace.

December Temperature in Isfahan

In December, Isfahan experiences a notable dip in temperatures, reflecting the onset of winter. The month typically sees minimum temperatures around -6°C (21°F), providing a crisp, chilly atmosphere. The average temperature hovers around 6°C (43°F), offering a modest respite from the colder extremes while still allowing for enjoyable outdoor exploration. With maximum temperatures reaching up to 22°C (72°F), days can be pleasantly mild, perfect for wandering through the city's stunning historical sites. As the month progresses, Isfahan transitions from the cooler fall months into winter, revealing a climate that exhibits a clear trend of steadily decreasing temperatures paired with a chance for pleasant, sunny days amidst the chill.

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

The chart illustrates December 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, December 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.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Isfahan

In December, Isfahan experiences a notable shift in its precipitation pattern, receiving an average of 11 mm (0.5 in) of rainfall over 2 days. This marks a continuation of the late autumn trend, where November brings a significant increase in wet days. While December's precipitation is somewhat lower than the previous month, it remains a crucial time for replenishing local water resources, especially as the arid summer months loom ahead. The city's overall dry conditions typically prevail from June to September, making the late fall and winter months essential for the annual precipitation cycle.

December Precipitation Trends in Isfahan

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

In December, Isfahan experiences a slight increase in humidity, reaching 63%, which is among the highest levels of the year. This rise follows a trend where humidity steadily fluctuates throughout the months, peaking in early winter with November's 62% and December's 63%. Notably, the humid conditions contrast sharply with the arid summer months, where July and August register an exceptionally low 20%, illustrating the region's marked seasonal shifts. As the year comes to a close, December’s increased moisture can enhance the atmosphere of Isfahan, bringing a refreshing chill that complements the city's rich historical backdrop.

December Average Humidity in Isfahan

This chart illustrates the average monthly humidity levels in Isfahan, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Isfahan

As the year winds down, December in Isfahan, Iran, brings a moderate UV Index of 4, with an extended burn time of 30 minutes. This marks a noticeable decline from the extreme levels experienced in the preceding summer months, where UV Index values soared to 13. The trend reflects a gradual cooling as December aligns with the milder weather, making outdoor activities less risky regarding sun exposure. With the UV Index taking a dip compared to the high levels seen in November, residents and visitors alike can enjoy the outdoor splendor of Isfahan with a bit more peace of mind. For those looking to understand UV exposure year-round, more detailed information can be found at Isfahan UV Index.

Maximum UV Index Levels in Isfahan for December

The chart shows the monthly maximum UV Index (UVI) for Isfahan in December, 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 December, the maximum UV index in Isfahan typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5710101313121110964
Data source: Isfahan December 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.

December Sunshine in Isfahan

In Isfahan, Iran, the month of December enjoys a healthy 294 hours of sunshine, marking a slight dip compared to the more sun-soaked months of late spring and summer. This sunny backdrop follows a gradual decline in daylight hours from the luminous highs of May and June, which boast each over 380 hours of radiant sunshine. As the year draws to a close, December's brightness still holds its ground, outshined only by the previous months that peak in warmth and light. With an increase from November, which captures 285 hours, December transitions the city towards the heart of winter, yet maintains a comforting glow that invites both residents and visitors to bask in its winter sun.

Monthly Sunshine Duration in Isfahan: December Highlighted

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

Chance of Sun in Isfahan During December

As December rolls into Isfahan, the likelihood of enjoying sunny weather sees a modest dip with a 65% chance of sunshine. While this marks a subtle decline from the vibrant sunlight characteristic of the late summer months—where August boasts an impressive 85% and September reaches a dazzling 97%—the forecast remains relatively bright compared to earlier winter days. It's interesting to note how the city's sunny disposition peaks during the hotter months, like June and July, each showing over 90% clear skies, before tapering into the winter. Thus, while December's charm is tinged with occasional clouds, its sunshine still offers a sprinkle of warmth and clarity amidst the cooler temperatures.

Percentage of Sunny Days in December in Isfahan

The chart illustrates the percentage of sunny days in Isfahan throughout the year, with December 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 December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Isfahan in December

As December settles over Isfahan, the city experiences 10 hours of daylight, mirroring the shorter days of November. This marks a continuation of the gradual decrease in sunlight that starts in November, following a peak of 14 hours in the summer months of June and July. The transition from the long, sun-soaked days of late spring and summer to the more subdued winter light underscores a notable seasonal rhythm in Isfahan. As daylight wanes, the city’s vibrant atmosphere softens, inviting residents and visitors alike to embrace the enchanting beauty of their surroundings during the cooler months.

Average Daylight Hours in Isfahan for December

The chart illustrates the variation in daylight duration in Isfahan throughout the year, with December 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.

December Winds in Isfahan

In December, Isfahan experiences its calmest winds of the year, with an average speed of just 1.5 m/s (3 mph). This tranquil breeze signifies a notable trend as the wind speeds gradually decline from the peaks seen in the spring months. After surging to 2.8 m/s (6 mph) in March, the winds slowly settle throughout the warmer months, dipping to their lowest in the winter. The gentle gusts create a serene atmosphere, perfect for enjoying Isfahan's enchanting architecture and rich culture during the cooler nights. As the year comes to a close, the stable December winds provide a peaceful backdrop, inviting both reflection and exploration.

Average December Wind Speed in Isfahan

The chart displays monthly wind speed patterns in Isfahan, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.92.82.42.32.32.62.21.91.81.51.5 m/s
Data source: Isfahan December wind data, generated using information from the Copernicus Climate Change Service.

How December 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 December’s weather to other months in Isfahan, focusing on differences in temperature, rainfall, humidity, and UV levels.

December and January exhibit notable differences in weather patterns. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 22°C (72°F), with an average of 6°C (43°F). This month experiences slightly more precipitation at 11 mm (0.5 in) over 2 days, alongside a humidity level of 63%. Conversely, January tends to be cooler, with minimum temperatures dropping to -8°C (18°F) and a maximum of 18°C (66°F), resulting in an average of 4°C (40°F). Precipitation decreases to 8 mm (0.3 in) over the same number of days, and humidity remains fairly stable at 60%. For a closer look at Isfahan’s climate during this month, check out Isfahan weather in January.

December and February exhibit some notable differences in weather patterns. December tends to be slightly milder with an average temperature of 6°C (43°F) and maximums reaching up to 22°C (72°F), while February's average of 8°C (46°F) and maximums of 23°C (74°F) indicate a gradual warming trend. Both months receive similar amounts of precipitation, with December experiencing 11 mm (0.5 in) over 2 days, while February sees a comparable 11 mm (0.4 in) spread across 3 days. Additionally, humidity levels are slightly higher in December at 63%, compared to February's 56%. For a closer look at February weather specifics, you can refer to Isfahan weather in February.

In December, the weather features a broad temperature range with a minimum of -6°C (21°F) and a maximum of 22°C (72°F), averaging around 6°C (43°F). This month experiences minimal precipitation, totaling 11 mm (0.5 in) over just 2 days, with humidity levels averaging 63%.

In contrast, March brings milder temperatures, with a minimum of -5°C (24°F) and a maximum reaching 31°C (87°F), resulting in an average of 12°C (55°F). The month sees an increase in precipitation to 18 mm (0.7 in) over 4 days, while maintaining slightly lower humidity at 60%. For more detailed information on March weather, visit Isfahan weather in March.

December and April present quite contrasting weather conditions. In December, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 22°C (72°F), with an average of 6°C (43°F). The month sees limited precipitation, totaling 11 mm (0.5 in) over just 2 days, accompanied by a humidity level of 63%. In contrast, April enjoys milder temperatures, with a minimum of 1°C (35°F) and a maximum reaching 32°C (90°F), showcasing an average of 18°C (64°F). This month experiences slightly higher precipitation at 17 mm (0.7 in) distributed over 5 days, accompanied by a lower humidity of 54%. For more insights on the weather in April, visit Isfahan weather in April.

December weather is notably cooler, with temperatures ranging from a minimum of -6°C (21°F) to a pleasant average of 6°C (43°F), and occasionally peaking at 22°C (72°F). In contrast, May boasts much warmer conditions, with a minimum temperature of 8°C (47°F) and an average of 23°C (73°F), reaching highs of 37°C (99°F). While both months experience similar levels of precipitation—11 mm (0.5 in) in December versus 13 mm (0.5 in) in May—December is slightly wetter over fewer days, with precipitation occurring on 2 days compared to 3 days in May. Additionally, humidity levels are higher in December at 63% compared to May's more comfortable 49%. For more details on the weather during this time, check out Isfahan weather in May.

In December, the weather is notably cold with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 22°C (72°F), and an average of 6°C (43°F). The month sees approximately 11 mm of precipitation over just two days, along with a humidity level of 63%. In stark contrast, June offers much warmer conditions, with temperatures varying from a minimum of 15°C (58°F) to a sweltering maximum of 41°C (107°F) and an average of 29°C (85°F). Rain is virtually absent in June, with just 1 mm of precipitation and no rainy days, resulting in a lower humidity of 37%. For more specific details on June weather patterns in Isfahan, you can visit Isfahan weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures range from a chilly -6°C (21°F) at night to a mild 22°C (72°F) during the day, with an average of 6°C (43°F). The month records about 11 mm (0.5 in) of precipitation over just two days, contributing to a higher humidity level of 63%. In contrast, July boasts significantly warmer temperatures, with nighttime lows of 16°C (62°F) and daytime highs peaking at an extreme 42°C (107°F), averaging 31°C (88°F). This summer month sees no recorded precipitation and a much lower humidity level of 24%. For more details on July's weather, you can visit Isfahan weather in July.

The weather in December is characterized by a much cooler climate, with average temperatures ranging from a minimum of -6°C (21°F) to a maximum of 22°C (72°F), and a higher humidity level of 63%. In contrast, August brings a scorching heat, where temperatures soar from a minimum of 11°C (53°F) to a blistering maximum of 42°C (107°F), accompanied by remarkably low humidity at 20% and no recorded precipitation. For more details on August weather, you can visit Isfahan weather in August.

In December, temperatures range from a chilly minimum of -6°C (21°F) to a comfortable maximum of 22°C (72°F), with an average of 6°C (43°F). The month sees some precipitation, with 11 mm (0.5 in) falling over just 2 days and humidity levels at 63%. In stark contrast, September boasts much warmer weather, with temperatures soaring from a minimum of 11°C (51°F) to a sweltering maximum of 37°C (100°F) and an average of 25°C (78°F). Remarkably, September experiences no precipitation at all, maintaining a low humidity of 25%. For more insights, check Isfahan weather in September.

The weather in December is notably cooler than in October, with average temperatures ranging from a minimum of -6°C (21°F) to a maximum of 22°C (72°F), while October boasts milder conditions with temperatures between 3°C (37°F) and 34°C (93°F). December also experiences a higher level of humidity at 63% compared to October's 42%, creating a stark contrast in overall comfort levels. Furthermore, December sees a slight increase in precipitation, with 11 mm (0.5 in) over two days, while October remains dry with just 3 mm (0.1 in) across zero rainy days. For more detailed insights, check Isfahan weather in October.

In comparing the weather of December and November, December tends to be slightly cooler, with an average temperature of 6°C (43°F), compared to November's warmer average of 10°C (50°F). The minimum temperatures in December drop to -6°C (21°F), which is colder than November's minimum of -4°C (24°F). Additionally, December experiences significantly less precipitation, receiving only 11 mm (0.5 in) over 2 days, while November sees 25 mm (1.0 in) of rain spread over 4 days. Humidity remains relatively consistent between the two months, with December at 63% and November at 62%. For more details on November's weather, you can check Isfahan weather in November.

Compare Isfahan's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Isfahan

In December, Isfahan experiences a unique charm with its cooler temperatures and occasional light rainfall, setting it apart from the warmer months. The average temperature dips to a brisk 6°C, while the maximum can reach a comfortable 22°C during sunny days, offering a delightful reprieve from summer heat. With only two rainy days and a modest precipitation of 11 mm, the month maintains a relatively dry atmosphere, making it perfect for exploring the city’s stunning architecture and rich history. Additionally, the humidity sits at a moderate 63%, creating a pleasantly crisp environment ideal for outdoor activities. Discover more about what to expect year-round in Isfahan by visiting Isfahan Climate.