December Weather in Rasht, Iran

Last updated: August 21, 2025

December in Rasht, Iran showcases a diverse climate that transitions from crisp mornings to milder afternoons. Temperatures fluctuate significantly, with maximums reaching 26°C (80°F), while the average settles at 10°C (50°F), dipping to a chilly -3°C (26°F) overnight. This month witnesses considerable rainfall, accumulating around 126 mm (5.0 in) across approximately 12 days, creating a humid atmosphere with an average humidity level of 72%. Such weather patterns make December a unique time for both locals and visitors to experience the rich, lush landscapes of Rasht, accentuated by the frequent showers and cool breezes.

December Temperature in Rasht

In December, Rasht experiences a noticeable drop in temperatures, with minimums dipping to -3°C (26°F), while the average hovers around 10°C (50°F). This month marks a transition into the chillier season, yet the maximum temperature can still reach a mild 26°C (80°F), showcasing the region's variability even in winter. As the year closes, Rasht's climate reflects a shift from the previous mild autumn, reinforcing the trend of cooler temperatures that progressively lead into the colder months of January and February. Despite the winter chill, December’s temperatures remain relatively moderate compared to other regions, allowing for a unique blend of crisp air and occasional warmth.

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

The chart illustrates December temperature patterns in Rasht, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rasht, 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).
JanFebMarAprMayJunJulAugSepOctNovDec464651576775797772635550
Data source: Temperature data for Rasht 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.

December Precipitation in Rasht

In December, Rasht experiences a notable precipitation of 126 mm (5.0 in), maintaining its wet reputation as one of Iran's rainiest cities. This month marks a slight decrease from the preceding months, particularly November, which recorded an impressive 246 mm (9.7 in). Interestingly, December's rainfall occurs over 12 days, striking a balance between moisture and accessibility, contrasting sharply with the 15 precipitation days seen in both October and November. As the year closes, the trend reflects a transition from the peak rainy season towards the colder, quieter winter months, yet Rasht remains reliably draped in a lush green landscape, nourished by its December showers.

December Precipitation Trends in Rasht

The chart displays monthly precipitation patterns in Rasht, 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 Rasht, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec110153114120533398102179214246126
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Rasht

In Rasht, Iran, December ushers in a humidity level of 72%, reflecting a gradual decrease from the wetter months of late autumn. The city experiences its highest humidity earlier in the year, with January and February maintaining a consistent 75%. As spring approaches, humidity slightly dips to 72% in March, further declining to 65% during the warmer months from April to June. The most noticeable drop occurs in August, where humidity falls to 49%, offering a drier respite before the September uptick to 58%. By October and November, humidity climbs back to a notable 73% and 75%, respectively, setting the stage for December’s moderate levels, which hint at the dynamic seasonal shifts typical of this lush region.

December Average Humidity in Rasht

This chart illustrates the average monthly humidity levels in Rasht, 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 Rasht is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%75%72%65%65%65%61%49%58%73%75%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rasht

In Rasht, Iran, the UV Index shows a clear downward trend as December rolls in, marked by a moderate level of 3. This indicates a decrease in sun intensity compared to the high and very high levels seen during the summer months, where indices peaked at 11 in May. As the year progresses, residents can enjoy longer safe exposure times—up to 30 minutes in December—without significant risk of sunburn. While the UV Index in winter months like December remains moderate, it’s still wise to remain aware of the sun's potential effects. For detailed insights on UV levels throughout the year, visit Rasht UV Index.

Maximum UV Index Levels in Rasht for December

The chart shows the monthly maximum UV Index (UVI) for Rasht 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 Rasht typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec448811101098643
Data source: Rasht 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 Rasht

As winter settles in, December in Rasht, Iran, continues to bask in a generous embrace of 249 hours of sunshine, offering a delightful contrast to the colder months. This marks a gradual decrease from the vibrant sunshine of November, which boasted 232 hours, yet still showcases Rasht's relatively bright winter days. The trend of sunshine hours indicates a peak in the spring, with May and June shining brightly with 377 and 391 hours respectively, before a slight decline as the seasons shift. December's cheerful rays are a reminder that even in the heart of winter, the sun still plays a key role in Rasht’s charm, creating a warm ambiance that lifts spirits during the chilly days.

Monthly Sunshine Duration in Rasht: December Highlighted

The December sunshine duration represents the total number of hours Rasht 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.
JanFebMarAprMayJunJulAugSepOctNovDec206h245h302h315h377h391h381h363h319h285h232h249h
Data source: Rasht December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rasht During December

In December, Rasht, Iran enjoys a 60% chance of sunny weather, marking a notable increase compared to the gloomier months leading up to it. This trend becomes particularly interesting when looking at the preceding months; after a dip in October and November, which saw only 29% and 48% sunny days respectively, December brings a refreshing boost in sunshine. With a percentage of sunny days that rivals January's impressive 64%, December stands out as a transitional period, offering a brighter outlook before the shift into the chillier depths of winter. Overall, while Rasht experiences fluctuations throughout the year, December represents an optimistic halfway point, blending cooler temperatures with the welcome warmth of the sun.

Percentage of Sunny Days in December in Rasht

The chart illustrates the percentage of sunny days in Rasht 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 Rasht experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec64%43%26%51%47%71%53%74%41%29%48%60%
Data source: Rasht December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rasht in December

In Rasht, Iran, the rhythm of daylight shifts dramatically throughout the year, revealing fascinating patterns in its sunlight hours. The year begins with a modest 9 hours of daylight in January, gradually increasing to a vibrant 14 hours by mid-summer in May and June. This peak is sustained throughout July before a gentle descent begins, with daylight decreasing back to 13 hours in August and gradually tapering off to 9 hours once again by December. This cyclical dance highlights a clear trend of increasing daylight as spring approaches, reaching its zenith in summer, followed by the seasonal retreat as winter sets in. Such fluctuations provide a beautiful testament to the changing seasons in this lush landscape, making every month a unique experience of natural light.

Average Daylight Hours in Rasht for December

The chart illustrates the variation in daylight duration in Rasht throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 54m10h 48m11h 58m13h 9m14h 10m14h 40m14h 24m13h 31m12h 23m11h 11m10h 9m9h 37m
Data source: Rasht daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Rasht

As December settles in Rasht, Iran, the wind begins to pick up slightly, with an average speed of 2.3 m/s (5 mph), marking a gentle increase from the preceding months. This uptick follows a generally stable wind pattern throughout the fall, where speeds hovered around 2.0 m/s (4 mph) in November. Interestingly, this winter season presents the highest average wind velocity since the summer months, signaling a subtle shift as Rasht prepares for the cold. While overall wind speeds remain relatively low year-round, December's cooler air and increased wind may create a refreshing contrast against the often damp and cloudy backdrop, inviting locals to experience the briskness of the season.

Average December Wind Speed in Rasht

The chart displays monthly wind speed patterns in Rasht, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.02.01.81.81.81.91.71.81.62.02.3 m/s
Data source: Rasht December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Rasht Compares to Other Months

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

December and January weather exhibits notable differences, particularly in temperature and precipitation patterns. December experiences a milder average temperature of 10°C (50°F), with a maximum reaching up to 26°C (80°F), while January is cooler, with an average of 8°C (46°F) and a maximum of 22°C (71°F). Interestingly, December has slightly higher precipitation at 126 mm (5.0 in) over 12 days, compared to January's 110 mm (4.3 in) over 10 days. Humidity levels also rise in January to 75%, up from December's 72%. For more detailed insights, you can explore Rasht weather in January.

December and February in Rasht present distinct weather patterns, reflecting the transition from late autumn to early spring. In December, temperatures average around 10°C (50°F), with a comfortable maximum of 26°C (80°F), though it can drop to a chilly minimum of -3°C (26°F). The month sees about 126 mm (5.0 in) of precipitation over 12 days, with a humidity level of 72%. In contrast, February experiences slightly cooler temperatures, with an average of 8°C (46°F) and a minimum dipping to -9°C (16°F), while the maximum remains in a mild range of 25°C (77°F). This month has a higher precipitation total of 153 mm (6.0 in) over 13 days and slightly increased humidity at 75%. For more details, check out Rasht weather in February.

December and March present distinct weather patterns, though both months share a similar humidity level of 72%. In December, temperatures range from a chilly minimum of -3°C (26°F) to a mild maximum of 26°C (80°F), with an average of 10°C (50°F). This month experiences about 126 mm (5.0 in) of precipitation spread over 12 days. Conversely, March offers a slightly warmer climate, with temperature fluctuations from -1°C (30°F) to a high of 29°C (85°F) and an average of 11°C (52°F). The precipitation in March measures 114 mm (4.5 in) but occurs over 15 days, indicating a wetter month despite the comparable overall humidity. For more details on March weather specifics, you can refer to Rasht weather in March.

In December, Rasht experiences cooler temperatures, with a minimum of -3°C (26°F) and an average of 10°C (50°F), while the month sees a maximum reaching 26°C (80°F). The precipitation is notable, with 126 mm (5.0 in) falling over 12 days and a humidity level of 72%. In contrast, April brings milder weather, starting with a minimum of 2°C (35°F) and averaging 14°C (57°F), while the maximum can rise to a warm 31°C (89°F). Although April has slightly less precipitation at 120 mm (4.7 in) over 13 days, the humidity decrease to 65% contributes to a more comfortable atmosphere. For more specific details about April weather, you can check Rasht weather in April.

December and May present distinctly different weather patterns. In December, temperatures can range from a chilly -3°C (26°F) at their lowest to a comfortable 26°C (80°F) at their peak, with an average temperature of around 10°C (50°F). The month sees significant precipitation, totaling 126 mm (5.0 in) over 12 days, accompanied by a humidity level of 72%. In contrast, May offers a much warmer experience, with temperatures starting at a milder 8°C (47°F), averaging 19°C (67°F), and soaring up to a maximum of 36°C (97°F). Precipitation in May is lighter, at just 53 mm (2.1 in) over 9 days, and the humidity is slightly lower at 65%. For more detailed weather insights, visit Rasht weather in May.

In December, Rasht experiences a cooler climate with temperatures ranging from a chilly minimum of -3°C (26°F) to a comfortable maximum of 26°C (80°F), averaging around 10°C (50°F). The month witnesses significant precipitation, totaling 126 mm (5.0 in) over about 12 days, coupled with moderate humidity levels at 72%. In contrast, June brings a warmer atmosphere, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 35°C (96°F), averaging 24°C (76°F). This month sees much less rainfall, with only 33 mm (1.3 in) spread over approximately 5 days, and a slightly lower humidity of 65%. For a closer look at June weather, you can visit Rasht weather in June.

In December, Rasht experiences cooler temperatures with a minimum of -3°C (26°F) and an average of 10°C (50°F), reaching a maximum of 26°C (80°F) on warmer days. The month sees significant precipitation, totaling 126 mm (5.0 in) over 12 days, along with a relatively high humidity level of 72%. In contrast, July brings much warmer weather, with temperatures ranging from a minimum of 15°C (60°F) to a scorching maximum of 36°C (98°F), and an average of 26°C (79°F). Precipitation decreases to 98 mm (3.8 in) over 10 days, and humidity drops to 61%. For further details, you can check Rasht weather in July.

In December, temperatures in Rasht can range from a chilly minimum of -3°C (26°F) to a comfortable maximum of 26°C (80°F), with an average of around 10°C (50°F). The month experiences significant precipitation, totaling 126 mm (5.0 in) over about 12 days, accompanied by a humidity level of 72%, contributing to a damp atmosphere. In contrast, August brings warmer days, with temperatures ranging from a minimum of 13°C (56°F) to a scorching maximum of 36°C (98°F) and an average of 25°C (78°F). Precipitation is lower in August, at 102 mm (4.0 in) over roughly 10 days, and the humidity drops to 49%, creating a much drier and hotter climate. For a detailed view of the weather in August, you can check Rasht weather in August.

In December, the weather experiences a significant drop in temperatures compared to September, with minimums reaching as low as -3°C (26°F) and average highs around 10°C (50°F). In contrast, September boasts warmer conditions, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 36°C (97°F). While both months see notable precipitation, December's 126 mm (5.0 in) over 12 days is slightly less than September's 179 mm (7.0 in) over 15 days. Additionally, December has higher humidity levels at 72%, compared to September’s 58%. For a closer look at September weather specifics, check out Rasht weather in September.

When comparing the weather in December to October, it's evident that December is notably colder, with average temperatures ranging from a minimum of -3°C (26°F) to a maximum of 26°C (80°F), while October enjoys milder temperatures from 7°C (44°F) to 31°C (88°F). Precipitation levels also differ significantly, with December receiving 126 mm (5.0 in) over 12 days, compared to October's higher total of 214 mm (8.4 in) over 15 days. Additionally, humidity remains relatively constant between the two months, with December at 72% and October at 73%. For more details about October's weather, visit Rasht weather in October.

December weather in Rasht shows a notable shift compared to November. While the average temperature in December hovers around 10°C (50°F), the minimum dips to -3°C (26°F), making it generally cooler than November, which averages 13°C (55°F) with a minimum of 1°C (34°F). Additionally, December experiences less rainfall, totaling 126 mm (5.0 in) over 12 days, compared to November's 246 mm (9.7 in) over 15 days. The humidity level in December is slightly lower at 72%, while November maintains a humidity of 75%. For more detailed insights on November's weather, you can explore Rasht weather in November.

Compare Rasht's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Rasht

As December unfolds in Rasht, the weather presents a striking contrast to the warmer months. With an average temperature dipping to a cool 10°C (50°F), the charm of winter becomes evident, inviting cozy atmospheres and seasonal festivities. While highs can reach a pleasant 26°C (80°F), the nights can be surprisingly chilly, sometimes plunging to a brisk -3°C (26°F). Rainfall is a regular visitor during this month, totaling 126 mm (5.0 in) over about 12 days, enhancing the lush greenery that Rasht is renowned for. This increase in humidity, sitting at 72%, adds a captivating mystique to the landscape. For those curious about Rasht's distinct climate patterns, further details are available at Rasht Climate.