December Weather in Kemi, Finland

Last updated: August 21, 2025

In Kemi, Finland, December brings a chill that defines the winter season, with average temperatures hovering around -4°C (25°F), reaching a maximum of 4°C (40°F) and plunging to a minimum of -20°C (-3°F). This month witnesses significant precipitation, totaling 71 mm (2.8 in) spread across 16 days, contributing to an atmosphere of crisp, snowy serenity. The humidity levels can be quite high at 98%, heightening the cold intensity but also creating a picturesque winter wonderland, perfect for those seeking the true essence of a Finnish winter.

December Temperature in Kemi

In Kemi, Finland, December ushers in the heart of winter, where temperatures dip significantly compared to the milder months that precede it. With a minimum of -20°C (-3°F) and an average of -4°C (25°F), the month demonstrates a notable chill, setting the stage for a truly wintry landscape. The highs hover around 4°C (40°F), providing a stark contrast to the earlier autumn months, signaling the transition into the depths of winter. This consistent drop in temperatures reflects an overall trend in Kemi, where the cold sets in during late fall and remains steadfast, making December a month where the beauty of snow-covered scenery and frosty air define the Finnish winter experience.

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

The chart illustrates December temperature patterns in Kemi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kemi, 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).
JanFebMarAprMayJunJulAugSepOctNovDec181723314255625850403124
Data source: Temperature data for Kemi 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 Kemi

In December, Kemi, Finland experiences a notable 71 mm (2.8 in) of precipitation, reflecting a blend of rain and snow typical for the month. This amount falls on 16 days, tying with November for the highest frequency of precipitation in the year. As temperatures drop, contrasting with the 82 mm seen the previous month, the December weather marks a shift towards a wintry landscape, where shorter days and colder nights contribute to a unique atmospheric charm. Overall, while December’s precipitation is significant, it signals the transition from the wetter autumn months into the snow-laden serenity of winter, setting the stage for the seasonal beauty that defines northern Finland.

December Precipitation Trends in Kemi

The chart displays monthly precipitation patterns in Kemi, 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 Kemi, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5048503852596392881068271
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kemi

In Kemi, Finland, the month of December brings a notable uptick in humidity, reaching a robust 98%. This aligns with the winter months, where humidity levels are generally higher, peaking after the autumn months of October and November, both sitting at 94%. As the year progresses, we observe a gradual decline from a humid 99% in January to 97% in February and 93% in March, before hovering around the mid-80s during the spring and early summer. However, as we transition back into winter, humidity consistently rises, showcasing the region's characteristic moistness during this cold season, making December one of the most humid months of the year in Kemi.

December Average Humidity in Kemi

This chart illustrates the average monthly humidity levels in Kemi, 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 Kemi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec99%97%93%86%80%76%79%83%89%94%94%98%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kemi

In December, Kemi, Finland experiences a UV Index of 1, indicating low exposure levels for sunbathers. With a burn time of 45 minutes, residents and visitors can enjoy outdoor activities with minimal risk of skin damage. This low index trend continues from the previous month, November, and is consistent with the early winter months of January and February, where the UV levels remain modestly low at 1. As we transition from the sunniest months of summer, where the UV Index peaked at 6, outdoor enthusiasts can appreciate the lower risk in the colder, darker months. For more detailed information on UV exposure throughout the year, visit Kemi UV Index.

Maximum UV Index Levels in Kemi for December

The chart shows the monthly maximum UV Index (UVI) for Kemi 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 Kemi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456643211
Data source: Kemi 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 Kemi

December in Kemi, Finland, marks a stark contrast to the sunlit months that precede it, with just 17 hours of sunshine illuminating the winter days. This dwindling daylight follows the steady ascent of sunlight hours from the frigid January, where only 30 hours are recorded, through the vibrant spring and summer months, peaking at 512 hours in both June and July. As the year concludes, the sunlight sharply declines, echoing the transition into deep winter. The 74 hours in November hint at a fading autumn, leading into this minimal December glow, making it a time for cozy indoor pursuits rather than sunlit adventures. The stark lows of daylight serve as a reminder of nature's cyclical rhythm, where each season offers its unique charm and beauty.

Monthly Sunshine Duration in Kemi: December Highlighted

The December sunshine duration represents the total number of hours Kemi 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.
JanFebMarAprMayJunJulAugSepOctNovDec30h136h271h361h458h512h512h420h287h157h74h17h
Data source: Kemi December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kemi During December

In Kemi, Finland, the likelihood of experiencing sunny weather in December is relatively low, with only a 16% chance of sunshine. This trend reflects a steady decline in sunny days as winter approaches, with January at a mere 7% and November slightly better at 24%. As the year progresses into spring, the sun starts to make a more prominent appearance, peaking in the height of summer with July boasting a 54% chance of sunshine. In contrast, December is characterized by the long, dark nights typical of northern winter, signaling that those hoping for sunny skies might want to look forward to the brighter days of spring instead.

Percentage of Sunny Days in December in Kemi

The chart illustrates the percentage of sunny days in Kemi 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 Kemi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec7%27%42%41%30%44%54%31%28%10%24%16%
Data source: Kemi December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kemi in December

As December arrives in Kemi, Finland, the daylight takes a sharp dip, offering only a fleeting 3 hours of light each day. This drastic reduction follows a gradual decline from the vibrant 19 hours of daylight in May, peaking at an impressive 22 hours in June. As the months progress towards winter, Kemi experiences a notable trend where daylight gradually wanes: from 15 hours in April to just 5 hours in November, before plummeting to its winter nadir. The early months of the year show a slow but steady increase in daylight duration, beginning with a mere 4 hours in January and climbing to 8 hours by February. This cycle of light and darkness not only shapes the daily life of Kemi's residents but also highlights the subtle beauty of the changing seasons in this Arctic wonderland.

Average Daylight Hours in Kemi for December

The chart illustrates the variation in daylight duration in Kemi throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec4h 46m8h 15m11h 48m15h 24m19h 13m22h 43m20h 31m16h 36m13h9h 28m5h 53m3h 18m
Data source: Kemi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Kemi

As December sets in Kemi, Finland, the winds pick up slightly, averaging 4.4 m/s (10 mph), creating a crisp air that encapsulates the essence of winter. This month’s wind speed maintains a steady rhythm, closely following November’s 4.5 m/s (10 mph) average, after a noticeable peak in October at 5.4 m/s (12 mph). Overall, the late autumn and early winter months show a gentle increase in wind speed, with March boasting the highest velocity at 4.6 m/s (10 mph) before gradually tapering off through the summer. As the year draws to a close, the winds in Kemi serve as a reminder of nature’s shifting patterns, preparing the landscape for the serene beauty of winter.

Average December Wind Speed in Kemi

The chart displays monthly wind speed patterns in Kemi, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.83.94.64.23.93.74.04.24.25.44.54.4 m/s
Data source: Kemi December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Kemi Compares to Other Months

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

December and January weather show distinct characteristics, particularly in temperature and humidity levels. In December, temperatures range from a minimum of -20°C (-3°F) to a maximum of 4°C (40°F), with an average of -4°C (25°F) and 71 mm (2.8 in) of precipitation spread over 16 days at a humidity level of 98%. In contrast, January experiences colder conditions, with temperatures dipping to a minimum of -27°C (-17°F) and an average of -8°C (18°F), while maintaining the same maximum of 4°C (40°F). Precipitation decreases to 50 mm (2.0 in) over just 10 days, and humidity rises slightly to 99%. For more details, check Kemi weather in January.

In December, the weather is generally milder, with average temperatures around -4°C (25°F) and a maximum of 4°C (40°F), despite experiencing relatively high humidity at 98%. The month sees considerable precipitation, totaling 71 mm (2.8 in) spread over 16 days. In contrast, February brings colder conditions, marked by a lower minimum temperature of -25°C (-13°F) and an average of -9°C (17°F). Although February has less precipitation at 48 mm (1.9 in) over 9 days, humidity remains high at 97%. For a closer look at the weather specifics for February, you can check Kemi weather in February.

In December, temperatures can plunge to a minimum of -20°C (-3°F), with an average of -4°C (25°F) and a maximum of 4°C (40°F). The month is quite humid, with levels reaching 98%, and sees approximately 71 mm (2.8 in) of precipitation over 16 days. In contrast, March experiences slightly milder weather, with minimum temperatures dropping to -21°C (-6°F) and an average of -5°C (24°F), while the maximum climbs to 6°C (43°F). Precipitation is reduced to 50 mm (2.0 in) over 10 days, and humidity lowers to 93%. You can explore more about March weather here.

In December, the weather is significantly colder, with average temperatures hovering around -4°C (25°F) and lows plummeting to -20°C (-3°F). It experiences frequent precipitation over 16 days, totaling 71 mm (2.8 in), accompanied by high humidity levels of 98%. In contrast, April brings a noticeable shift in conditions, with an average temperature of -1°C (31°F) and maximums reaching 12°C (53°F), allowing for a more mild atmosphere. Precipitation decreases to just 38 mm (1.5 in) over only 7 days, and humidity levels drop to 86%. The transition from December to April highlights the gradual warming and reduced moisture typical of the early spring season. For more detailed insights, consider checking Kemi weather in April.

December and May present stark contrasts in weather conditions. December experiences frigid temperatures, with average lows around -4°C (25°F) and a maximum reaching only 4°C (40°F). The month is characterized by significant humidity at 98% and frequent precipitation, with 71 mm (2.8 in) falling over approximately 16 days. In contrast, May ushers in milder temperatures, averaging 5°C (42°F) and peaking at 20°C (68°F), making it feel much more pleasant. The precipitation in May is reduced to 52 mm (2.1 in) over just 9 days, and humidity drops to 80%. For a closer look at May’s weather in Kemi, you can visit Kemi weather in May.

In December, the weather is characterized by frigid temperatures, with a minimum of -20°C (-3°F) and an average temperature hovering around -4°C (25°F). Precipitation is relatively high, occurring over 16 days and amounting to 71 mm (2.8 in), accompanied by high humidity levels reaching 98%. In contrast, June brings a much milder climate, with temperatures ranging from a minimum of 2°C (36°F) to a pleasant maximum of 24°C (75°F) and an average of 13°C (55°F). Rainfall is less frequent, with only 8 days of precipitation totaling 59 mm (2.3 in) and humidity at a more comfortable 76%. For a closer look at June's weather specifics, you can check Kemi weather in June.

In December, the weather is characterized by frigid temperatures, with a minimum of -20°C (-3°F) and an average of -4°C (25°F), peaking at a maximum of 4°C (40°F). The month experiences significant precipitation, totaling 71 mm (2.8 in), spread over 16 days, coupled with a high humidity level of 98%. In stark contrast, July offers a milder climate, with temperatures ranging from a minimum of 6°C (44°F) to a pleasant average of 17°C (62°F), and a maximum of 28°C (83°F). July receives slightly less precipitation at 63 mm (2.5 in) over 10 days and a lower humidity of 79%. For more details, check out Kemi weather in July.

December and August in Kemi exhibit striking contrasts in weather conditions. In December, temperatures plunge to a minimum of -20°C (-3°F), with an average of -4°C (25°F) and a maximum of 4°C (40°F), creating a frigid atmosphere. The month also sees significant precipitation, totaling 71 mm (2.8 in) across 16 days, along with elevated humidity levels at 98%. In contrast, August offers a much milder climate, featuring temperatures that range from a minimum of 4°C (40°F) to a maximum of 27°C (81°F), with an average temperature of 15°C (59°F). Although it experiences slightly higher precipitation at 92 mm (3.6 in) over 14 days, the humidity is notably lower at 83%. For more details on the weather in August, you can visit Kemi weather in August.

In December, the weather takes a sharp turn towards winter, with temperatures plummeting to a minimum of -20°C (-3°F) and averaging -4°C (25°F). In contrast, September enjoys milder conditions, with temperatures ranging from a minimum of -1°C (31°F) to an average of 10°C (50°F) and a maximum of 19°C (66°F). December experiences significant precipitation, totaling 71 mm (2.8 in) over 16 days, while September is slightly wetter at 88 mm (3.4 in), but with precipitation spread across just 13 days. The humidity level also increases in December, reaching a staggering 98% compared to September's relatively lower 89%. For more details on the September climate, you can check Kemi weather in September.

When comparing the weather in December to that in October, it's clear that December is significantly colder, with average temperatures hovering around -4°C (25°F) compared to October's milder average of 4°C (40°F). The minimum temperatures in December can plummet to -20°C (-3°F), while in October, they dip to a less severe -8°C (17°F). Both months receive considerable precipitation, though October sees slightly more, with 106 mm (4.2 in) over 15 days compared to December's 71 mm (2.8 in) over 16 days. Humidity levels are notably high in both months, reaching 98% in December and 94% in October, contributing to the cool, damp atmosphere typical of this time of year. For a more detailed look at October's climate, visit Kemi weather in October.

In comparing the weather conditions of December and November, December tends to be significantly colder, with average temperatures hovering around -4°C (25°F) compared to November's milder average of 0°C (32°F). December also experiences a lower maximum temperature of 4°C (40°F), while November can reach up to 9°C (48°F). Precipitation levels are slightly lower in December at 71 mm (2.8 in) compared to November's 82 mm (3.2 in), though both months see a similar number of wet days, with precipitation on 16 days. Additionally, December's humidity is higher at 98%, contrasted with November's 94%. For more detailed information, you can visit Kemi weather in November.

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Conclusion: What to Expect From December Weather in Kemi

As December settles in, Kemi transforms into a winter wonderland, marked by intensely cold temperatures that starkly contrast the milder months preceding it. The chill of the season brings about a notable increase in precipitation, with snowfall often gracing the landscape for up to half the month. With humidity levels reaching a notable 98%, the air feels crisp, accentuating the wintry atmosphere that envelops the town. While this time of year may challenge those unaccustomed to the cold, it also offers a magical charm, showcasing Kemi's unique beauty during the depths of winter. To explore more about the weather patterns throughout the year, visit Kemi Climate.