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.
In general, the average temperature in Uusimaa at the beginning of December is -1.7 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 0.6 °C by the end of December.
Snow Forecast ❄️
Temperatures
7
Dry days
1
Rainy days
23
Snow days
-1°/-4°
Temperatures
20 km/h
Avg max wind
89 %
Avg humidity
Uusimaa in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  0° | 2  -1° | 3  -2° | 4 -3° | 5 -2° | 6 -1° | 7 -3° |
| 8 -3° | 9 -2° | 10  -0° | 11 1° | 12  -0° | 13 -1° | 14 -1° |
| 15 -1° | 16  2° | 17 2° | 18  3° | 19 4° | 20 2° | 21 1° |
| 22 1° | 23 2° | 24 0° | 25 -0° | 26 -1° | 27 -1° | 28 1° |
| 29  2° | 30  3° | 31 -0° |
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Temperatures trend during December in Uusimaa
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. | Partly cloudy | 0° /-3° | 0.3 mm | 0.1 cm | |
| 2 Dec. | Cloudy | -1° /-5° | 0.3 mm | 0 cm | |
| 3 Dec. | Overcast | -2° /-6° | 2.2 mm | 0.6 cm | |
| 4 Dec. | Cloudy | -3° /-7° | 0 mm | 0 cm | |
| 5 Dec. | Partly cloudy | -2° /-8° | 1.3 mm | 1.1 cm | |
| 6 Dec. | Overcast | -1° /-5° | 1.7 mm | 0.3 cm | |
| 7 Dec. | Partly cloudy | -3° /-5° | 2.3 mm | 0.8 cm | |
| 8 Dec. | Partly cloudy | -3° /-6° | 1.6 mm | 0.5 cm | |
| 9 Dec. | Partly cloudy | -2° /-6° | 0.5 mm | 0.3 cm | |
| 10 Dec. | Patchy moderate snow | 0° /-5° | 3.7 mm | 1.7 cm | |
| 11 Dec. | Overcast | 1° /-3° | 2.8 mm | 1.1 cm | |
| 12 Dec. | Moderate snow | 0° /-4° | 3 mm | 1.8 cm | |
| 13 Dec. | Moderate snow | -1° /-5° | 1.6 mm | 0.5 cm | |
| 14 Dec. | Overcast | -1° /-5° | 7.2 mm | 3 cm | |
| 15 Dec. | Overcast | -1° /-7° | 0.5 mm | 0.1 cm | |
| 16 Dec. | Patchy rain possible | 2° /-4° | 3.7 mm | 0.2 cm | |
| 17 Dec. | Overcast | 2° /-3° | 0.3 mm | 0.1 cm | |
| 18 Dec. | Moderate rain at times | 3° /-3° | 3.5 mm | 0.2 cm | |
| 19 Dec. | Overcast | 4° /0° | 2.9 mm | 0 cm | |
| 20 Dec. | Overcast | 2° /-3° | 1 mm | 0.2 cm | |
| 21 Dec. | Patchy rain possible | 1° /-3° | 2.3 mm | 1.2 cm | |
| 22 Dec. | Overcast | 1° /-2° | 2.9 mm | 0.8 cm | |
| 23 Dec. | Patchy moderate snow | 2° /-2° | 3.8 mm | 1.5 cm | |
| 24 Dec. | Cloudy | 0° /-5° | 0.9 mm | 0.4 cm | |
| 25 Dec. | Overcast | 0° /-4° | 0.8 mm | 0.6 cm | |
| 26 Dec. | Overcast | -1° /-5° | 0.1 mm | 0 cm | |
| 27 Dec. | Patchy moderate snow | -1° /-6° | 1.5 mm | 0.5 cm | |
| 28 Dec. | Overcast | 1° /-5° | 1 mm | 0.5 cm | |
| 29 Dec. | Light freezing rain | 2° /-2° | 5.1 mm | 1.8 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 | |
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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.
Uusimaa in December - FAQ
What are the expected maximum and minimum temperatures in Uusimaa during December?
Brace for cold days with temperatures not exceeding -1° 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 60 mm spread over approximately 1 days. Considering plans for rainy days is advisable.
Will it snow in Uusimaa in December 2025?
Uusimaa experiences an average snowfall of 19.933 cm during December, occurring over 23 days.
What are the typical wind conditions in Uusimaa during December?
The average wind speed in Uusimaa during December is 20 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 ❄️
December rainfall patterns in Uusimaa
Explore the daily rainfall trends and prepare for Uusimaas December weather 💧
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