December Weather in Ilam, Nepal

Last updated: August 31, 2025

In December, Ilam, Nepal experiences a subtle yet captivating shift in weather, characterized by a maximum temperature of 22°C (72°F) and an average of 11°C (51°F), providing a comfortable chill. The nights can grow quite cool, with temperatures dipping to a minimum of 1°C (35°F). This month also sees 18 mm (0.7 in) of precipitation spread across three days, contributing to the lush green landscapes that Ilam is known for. With a humidity level of 75%, the air retains a refreshing and invigorating quality, making December a unique time to explore this picturesque region.

December Temperature in Ilam

In Ilam, Nepal, December brings a noticeable drop in temperatures as winter sets in, yet the climate remains relatively mild compared to the colder months ahead. With a minimum temperature of 1°C (35°F), nights can be brisk, while daytime averages around 11°C (51°F), providing a comfortable environment for outdoor activities. The maximum temperature can reach 22°C (72°F), reminiscent of warmer months but hinting at the chill of winter. Compared to previous months, temperatures in December signify a gradual cooling trend—a transition from the more temperate November to the chillier January that follows. This month serves as a bridge, where the beauty of Ilam's lush landscape is complemented by the gentle bite of winter air, making it an enchanting time for visitors and locals alike.

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

The chart illustrates December temperature patterns in Ilam, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilam, 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).
JanFebMarAprMayJunJulAugSepOctNovDec485259646771727271665851
Data source: Temperature data for Ilam 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 Ilam

In Ilam, Nepal, December marks the tail end of the region's precipitation cycle, contributing a modest 18 mm (0.7 in) of rain over just three days. This sharp decline in both rainfall and rainy days compared to the preceding months reflects a significant seasonal shift. Following a peak in July with a staggering 940 mm (37.0 in) of precipitation, December's figures indicate a transition into a much drier climate, where the lush monsoon foliage begins to recede. As the year wraps up, the dwindling rainfall hints at the region's move towards winter, setting the stage for a much less humid January ahead.

December Precipitation Trends in Ilam

The chart displays monthly precipitation patterns in Ilam, 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 Ilam, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec27641422102995119406053751802018
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ilam

December in Ilam, Nepal, experiences a notable shift in humidity, settling at 75%. This marks a decrease from the high levels observed in the preceding months, particularly the peak humidity of 93% seen from July through September. As the year progresses, the region transitions from the torrid summer months into a cooler winter, and December reflects this change with a more moderate yet still prominent humidity level. Following November's 80%, the decline indicates a shift toward drier conditions, setting the stage for clearer skies and a crisp air that often characterizes the winter season. Overall, December serves as a pivotal point as Ilam moves away from its humid summer and towards the more temperate months ahead.

December Average Humidity in Ilam

This chart illustrates the average monthly humidity levels in Ilam, 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 Ilam is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%61%38%34%60%83%93%93%93%88%80%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ilam

In December, Ilam, Nepal experiences a UV Index of 6, categorized as high, which allows for a burn time of approximately 25 minutes. This marks a notable decrease from the extreme levels seen in the height of summer months, where values peaked at 15 in July. As the year wraps up, the trends indicate a gradual decline in UV exposure as the colder months set in, providing a welcome reprieve from the intense summer sun. Despite this, it remains essential to practice sun safety, particularly during midday. For more detailed insights, check out Ilam UV Index.

Maximum UV Index Levels in Ilam for December

The chart shows the monthly maximum UV Index (UVI) for Ilam 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 Ilam typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6791112141514121086
Data source: Ilam 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 Ilam

In Ilam, Nepal, December basks in the glow of 291 hours of sunshine, wrapping up the year with a warm farewell. This month provides a pleasant balance to the seasonal daylight trends, showcasing a slight drop from November's 293 hours yet still reflecting the region's overall sun-kissed charm throughout the year. As one transitions from the bright peaks of May and June, which boast over 330 hours, to the shorter days of winter, December maintains a generous dose of sunlight that is comforting during the chilly months. The gradual fluctuation in daylight hours highlights Ilam's diverse climatic tapestry, each month weaving its unique patterns of sun and shade that captivate both locals and visitors alike.

Monthly Sunshine Duration in Ilam: December Highlighted

The December sunshine duration represents the total number of hours Ilam 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.
JanFebMarAprMayJunJulAugSepOctNovDec237h271h321h325h337h310h216h239h261h321h293h291h
Data source: Ilam December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ilam During December

In Ilam, Nepal, the likelihood of sunny weather in December is quite promising at 67%, marking a notable increase as the year comes to a close. This trend of rising sunshine is particularly evident when compared to the preceding months; for instance, November enjoys a sunny chance of 66%, while both October and September fall significantly lower at 48% and 23% respectively. As winter progresses, December's sunny prospects not only reflect the tail end of the dry season but also suggest a welcome shift from the dismal rainy months of May through July, where sunshine chances plummet to single digits. With the festive season often beckoning travelers, December stands out as a bright spot in the annual weather pattern of Ilam.

Percentage of Sunny Days in December in Ilam

The chart illustrates the percentage of sunny days in Ilam 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 Ilam experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec56%66%58%65%22%13%4%3%23%48%66%67%
Data source: Ilam December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ilam in December

As the year cycles through its seasonal changes, Ilam, Nepal witnesses a fascinating pattern in daylight duration. December, while nestled in the chill of winter, echoes the shorter days of January and November with about 10 hours of daylight. Continuing from the long, sun-kissed days of May to August, where the sun graces the landscape for 13 hours, the daylight gradually decreases, tapering down in a smooth transition from autumn's plentiful light to winter's embrace. Each month tells a story of diminishing sunlight, peaking in the vibrant spring months of March and April at 12 hours, before descending to the quieter, reflective days of late year. This rhythmic ebb and flow not only marks the passage of time but also enriches Ilam's natural beauty, offering a unique perspective on the changing seasons.

Average Daylight Hours in Ilam for December

The chart illustrates the variation in daylight duration in Ilam throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 38m11h 14m12h12h 47m13h 27m13h 47m13h 37m13h 2m12h 17m11h 29m10h 48m10h 27m
Data source: Ilam daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Ilam

As December arrives in Ilam, Nepal, the winds continue to whisper softly, with an average speed of 1.1 m/s (3 mph). This tranquil pace aligns with the gentle breezes of recent months, where wind speeds have remained relatively consistent, fluctuating minimally between 1.0 to 1.4 m/s across the year. The calmness of December stands out as a serene conclusion to the year's weather patterns, transitioning from the slightly more dynamic spring months to the peaceful embrace of winter. While the wind is not fierce, its persistent presence adds a charming whisper to the cool mountain air, inviting all to bask in the tranquil beauty of Ilam at year’s end.

Average December Wind Speed in Ilam

The chart displays monthly wind speed patterns in Ilam, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.21.21.31.41.21.11.01.01.01.11.11.1 m/s
Data source: Ilam December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Ilam Compares to Other Months

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

In December, temperatures in Ilam range from a minimum of 1°C (35°F) to a maximum of 22°C (72°F), with an average of 11°C (51°F). The month experiences relatively low precipitation of 18 mm (0.7 in) over just 3 days, contributing to a high humidity level of 75%. Conversely, January sees a slight dip in the average temperature, with a minimum of 0°C (33°F) and an average of 9°C (49°F), while the maximum remains unchanged at 22°C (71°F). Precipitation increases to 27 mm (1.1 in) and occurs over 7 days, leading to a decrease in humidity to 59%. For more detailed weather insights, check Ilam weather in January.

December and February exhibit intriguing weather patterns that highlight the transition between late autumn and early spring. In December, temperatures range from a minimum of 1°C (35°F) to a maximum of 22°C (72°F), with an average of 11°C (51°F). This month experiences relatively low precipitation, totaling 18 mm (0.7 in) over just three days, and maintains humidity levels at 75%. In contrast, February sees a slightly lower minimum temperature of -1°C (31°F), while the average and maximum temperatures remain stable at 11°C (52°F) and 22°C (73°F), respectively. However, February is significantly wetter, with precipitation reaching 64 mm (2.5 in) spread over 13 days and a decrease in humidity to 61%. For further specifics about the weather in February, you can visit Ilam weather in February.

December and March exhibit distinct differences in weather patterns. In December, temperatures range from a minimum of 1°C (35°F) to a maximum of 22°C (72°F), with an average of 11°C (51°F). The month sees relatively low precipitation at 18 mm (0.7 in) over just three days, coupled with high humidity at 75%. In contrast, March experiences warmer temperatures, ranging from a minimum of 2°C (37°F) to a maximum of 27°C (82°F), with an average of 15°C (59°F). However, this month is significantly wetter, recording 142 mm (5.6 in) of precipitation over 20 days and lower humidity at 38%. For a more detailed look at the weather in March, you can visit Ilam weather in March.

December and April present quite different weather patterns. In December, temperatures range from a chilly minimum of 1°C (35°F) to a mild maximum of 22°C (72°F), with an average of 11°C (51°F). The month experiences relatively low precipitation, with only 18 mm (0.7 in) over about three days, and humidity levels are high at 75%. In contrast, April brings much warmer temperatures, with a minimum of 8°C (46°F) and a peak of 28°C (82°F), resulting in an average of 18°C (64°F). However, April is significantly wetter, recording 210 mm (8.3 in) of rainfall over 24 days, but the humidity drops to a more comfortable 34%. These stark contrasts make each month uniquely different in terms of weather. For more detailed information, you can check Ilam weather in April.

December and May present contrasting weather patterns. In December, temperatures range from a chilly 1°C (35°F) at night to a comfortable 22°C (72°F) during the day, accompanied by relatively low precipitation of 18 mm (0.7 in) over just 3 days and high humidity at 75%. In stark contrast, May experiences much warmer conditions with temperatures varying from a minimum of 12°C (53°F) to a maximum of 29°C (84°F). However, this month is significantly wetter, with a staggering 299 mm (11.8 in) of rainfall spread across 29 days and a lower humidity level of 60%. For a more detailed look at the weather in May, check out Ilam weather in May.

December and June present markedly different weather patterns. In December, temperatures range from a cool minimum of 1°C (35°F) to a pleasant maximum of 22°C (72°F), with an average of 11°C (51°F). The month sees relatively low precipitation, totaling 18 mm (0.7 in) over just three days, and humidity levels hover around 75%. In contrast, June is significantly warmer, with minimum temperatures of 16°C (61°F) and maximums reaching up to 29°C (84°F), averaging 22°C (72°F). This month experiences much higher rainfall, accumulating 511 mm (20.1 in) across 29 days, coupled with humidity levels rising to 83%. For a detailed look at June weather in this region, visit Ilam weather in June.

December weather in Ilam presents a mild contrast to July, with temperatures ranging from a minimum of 1°C (35°F) to a pleasant maximum of 22°C (72°F). The relatively low precipitation of 18 mm (0.7 in) over just three days indicates a drier month, complemented by a humidity level of 75%. In stark contrast, July is characterized by much warmer temperatures, with nightly lows of 19°C (66°F) and daytime highs reaching up to 30°C (85°F). The month is also marked by significant rainfall, accumulating a staggering 940 mm (37.0 in) over 30 days, contributing to a much higher humidity level of 93%. For more detailed information, you can check Ilam weather in July.

December and August exhibit stark contrasts in weather patterns. In December, temperatures range from a minimum of 1°C (35°F) to an average of 11°C (51°F), peaking at 22°C (72°F), with a much lower humidity level of 75%. The month sees relatively little precipitation, totaling just 18 mm (0.7 in) over about three days. In contrast, August experiences much warmer temperatures, with a minimum of 19°C (66°F) and an average of 22°C (73°F), reaching a maximum of 30°C (86°F). This month is characterized by high humidity (93%) and significant rainfall, averaging 605 mm (23.8 in) over 31 days. For a more detailed look at August weather, you can visit Ilam weather in August.

December and September exhibit stark contrasts in weather patterns. December sees milder temperatures, with a range from a chilly minimum of 1°C (35°F) to a pleasant maximum of 22°C (72°F) and an average of 11°C (51°F). Precipitation is relatively low at 18 mm (0.7 in) over just three days, coupled with a humidity level of 75%. In contrast, September experiences much warmer weather, with temperatures ranging from a minimum of 16°C (62°F) to a high of 29°C (85°F) and an average of 21°C (71°F). However, it is also notably wetter, with a total of 375 mm (14.8 in) of rain spread over 28 days and a high humidity of 93%. For more detailed information, check out Ilam weather in September.

December weather exhibits milder temperatures compared to October, with averages ranging from a minimum of 1°C (35°F) to a maximum of 22°C (72°F), while October boasts a wider range, from 9°C (48°F) to 28°C (83°F). Precipitation is significantly lower in December, totaling just 18 mm (0.7 in) over 3 days, in stark contrast to October's substantial 180 mm (7.1 in) spread over 20 days. Additionally, December's humidity level at 75% is slightly lower than October's 88%, highlighting the more comfortable conditions of late fall. For further details about October weather, visit Ilam weather in October.

In comparing the weather patterns of November and December, December tends to be cooler overall, with average temperatures ranging from a minimum of 1°C (35°F) to a maximum of 22°C (72°F), compared to November's milder range of 5°C (42°F) to 26°C (79°F). Humidity levels remain fairly high in both months, with December at 75% and November slightly higher at 80%. Precipitation is similar, though December experiences slightly less with 18 mm (0.7 in) over 3 days, while November sees 19 mm (0.8 in) across 5 days. For a more detailed look at conditions in November, you can check Ilam weather in November.

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Conclusion: What to Expect From December Weather in Ilam

As December unfolds in Ilam, the weather presents a refreshing shift from the preceding months. With average temperatures lingering around a cool 11°C (51°F), this month marks a noticeable dip, embracing the chill of winter. Maximum daytime highs reach a pleasant 22°C (72°F), making for comfortable afternoons, while cool nights can drop down to 1°C (35°F). The month is relatively dry, with only three days of precipitation amounting to 18 mm (0.7 in), yet the humidity stays steady at 75%, adding to the crisp winter air. For a comprehensive overview of Ilam's climate patterns throughout the year, check out Ilam Climate.