Uusimaa (Helsinki)
December
Weather in Uusimaa for December 2025
Your guide to Uusimaa weather in December - trends and predictions
Uusimaa is transformed into a snow paradise in December, with more than 20 snowy days on average.
According to Uusimaa snow forecast for December 2025, 1 snowy day is expected until the end of the month at Tuesday, 23 December.So far, December 2025 in Uusimaa shows a warmer trend than usual by 4.7 °C.
The forecast for the upcoming days in Uusimaa predicts a temperature of 1.8 °C, which is slightly above the historical average.
In general, the average temperature in Uusimaa at the beginning of December is -0.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of -0.9 °C by the end of December.
Snow Forecast ❄️
Temperatures
4
Dry days
2
Rainy days
25
Snow days
0°/-4°
Temperatures
21 km/h
Avg max wind
88 %
Avg humidity
Uusimaa Weather December
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What’s the Weather Like in Uusimaa This December?
Discover the average temperatures and weather trends across Uusimaa’s cities this December.
Temperatures trend during December in Uusimaa
See the weather trend as well as the moving average line
December weather in Uusimaa day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Partly cloudy | 2° /-2° | 1.2 mm | 0.1 cm | |
| 2 Dec. |  Patchy rain possible | 0° /-3° | 0.3 mm | 0 cm | |
| 3 Dec. |  Overcast | 0° /-4° | 1.8 mm | 0.5 cm | |
| 4 Dec. |  Cloudy | -2° /-5° | 0 mm | 0 cm | |
| 5 Dec. | Partly cloudy | -1° /-6° | 1.1 mm | 0.8 cm | |
| 6 Dec. | Overcast | 0° /-3° | 2.3 mm | 0.3 cm | |
| 7 Dec. | Partly cloudy | -1° /-4° | 2.4 mm | 0.7 cm | |
| 8 Dec. | Partly cloudy | -1° /-4° | 1.9 mm | 0.4 cm | |
| 9 Dec. | Partly cloudy | -1° /-4° | 1 mm | 0.2 cm | |
| 10 Dec. |  Patchy moderate snow | 1° /-3° | 3.3 mm | 1.4 cm | |
| 11 Dec. | Overcast | 2° /-2° | 2.4 mm | 0.9 cm | |
| 12 Dec. |  Light freezing rain | 0° /-3° | 2.5 mm | 1.5 cm | |
| 13 Dec. | Overcast | -1° /-5° | 1.3 mm | 0.5 cm | |
| 14 Dec. |  Heavy snow | -1° /-5° | 6.6 mm | 2.6 cm | |
| 15 Dec. | Overcast | 0° /-5° | 0.6 mm | 0.1 cm | |
| 16 Dec. | Patchy rain possible | 6° /5° | 0.5 mm | 0 cm | |
| 17 Dec. | Patchy rain possible | 6° /5° | 3.8 mm | 0 cm | |
| 18 Dec. |  Sunny | 4° /2° | 0 mm | 0 cm | |
| 19 Dec. | Patchy rain possible | 6° /5° | 0.2 mm | 0 cm | |
| 20 Dec. | Patchy rain possible | 6° /4° | 1.6 mm | 0 cm | |
| 21 Dec. | Cloudy | 5° /3° | 0 mm | 0 cm | |
| 22 Dec. | Patchy rain possible | 4° /2° | 1.7 mm | 0 cm | |
| 23 Dec. |  Light snow | 1° /-3° | 0.2 mm | 0 cm | |
| 24 Dec. | Sunny | -4° /-5° | 0 mm | 0 cm | |
| 25 Dec. | Partly cloudy | -3° /-4° | 0 mm | 0 cm | |
| 26 Dec. | Sunny | -2° /-3° | 0 mm | 0 cm | |
| 27 Dec. | Sunny | -1° /-2° | 0 mm | 0 cm | |
| 28 Dec. | Sunny | -2° /-2° | 0 mm | 0 cm | |
| 29 Dec. | Sunny | -1° /-2° | 0 mm | 0 cm | |
| 30 Dec. |  Heavy rain at times | 3° /-2° | 5.9 mm | 1.1 cm | |
| 31 Dec. | Patchy rain possible | 0° /-4° | 1.7 mm | 0.1 cm | |
| Next | |||||
Important Notice
Our weather forecast for Uusimaa in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Uusimaa forecast closer to your planned date for the most up-to-date weather information.
Change Month
Uusimaa in December - FAQ
What are the expected maximum and minimum temperatures in Uusimaa during December?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Uusimaa during December?
Moderate rainfall is anticipated in Uusimaa during December, with a total of 66.4 mm spread over approximately 2 days. Considering plans for rainy days is advisable.
Will it snow in Uusimaa in December 2025?
Uusimaa experiences an average snowfall of 21.1715 cm during December, occurring over 25 days.
What are the typical wind conditions in Uusimaa during December?
The average wind speed in Uusimaa during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Uusimaa snow forecast December 2025
Track daily snowfall levels and discover Uusimaa’s snowy potential this December ❄️
On average, Uusimaa sees 25 snowy days during December, with approximately 21.2 cm of total snowfall.
December rainfall patterns in Uusimaa
Explore the daily rainfall trends and prepare for Uusimaas December weather 💧
Typically, Uusimaa has 2 rainy days in December with a total of 66.4 mm of rainfall.
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