Southwest Finland (Turku)
December
Weather in Southwest Finland for December 2025
Your guide to Southwest Finland weather in December - trends and predictions
Southwest Finland typically experiences moderate snowfall in December, with an average of 10 snowy days.
In general, the average temperature in Southwest Finland at the beginning of December is -0.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 1.6 °C by the end of December.
Snow Forecast ❄️
Temperatures
12
Dry days
9
Rainy days
10
Snow days
3°/-7°
Temperatures
21 km/h
Avg max wind
89 %
Avg humidity
Southwest Finland Weather December
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  1° | 2  -1° | 3  -1° | 4  -4° | 5  1° | 6 2° | 7  -1° |
| 8 -1° | 9 -2° | 10 -0° | 11 1° | 12 -2° | 13 -3° | 14 -3° |
| 15 -3° | 16  3° | 17  3° | 18 2° | 19 4° | 20 1° | 21 1° |
| 22  3° | 23 2° | 24  0° | 25 1° | 26 2° | 27 1° | 28 2° |
| 29 4° | 30 3° | 31  -2° |
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Temperatures trend during December in Southwest Finland
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. | Moderate snow | 1° /-3° | 0.7 mm | 0.3 cm | |
| 2 Dec. | Mist | -1° /-4° | 1.6 mm | 0 cm | |
| 3 Dec. | Light snow | -1° /-8° | 4 mm | 1.8 cm | |
| 4 Dec. | Freezing fog | -4° /-8° | 0 mm | 0 cm | |
| 5 Dec. | Moderate or heavy snow showers | 1° /-7° | 1.9 mm | 1.5 cm | |
| 6 Dec. | Light snow | 2° /-3° | 1.3 mm | 0.6 cm | |
| 7 Dec. | Light freezing rain | -1° /-4° | 0.7 mm | 0.5 cm | |
| 8 Dec. | Moderate snow | -1° /-3° | 0.7 mm | 0.5 cm | |
| 9 Dec. | Light snow | -2° /-5° | 0.3 mm | 0.3 cm | |
| 10 Dec. | Moderate snow | 0° /-3° | 0.6 mm | 0.5 cm | |
| 11 Dec. | Moderate snow | 1° /-2° | 0.5 mm | 0.4 cm | |
| 12 Dec. | Light snow | -2° /-5° | 0.2 mm | 0.1 cm | |
| 13 Dec. | Light freezing rain | -3° /-8° | 0.1 mm | 0 cm | |
| 14 Dec. | Freezing fog | -3° /-7° | 10.4 mm | 2.8 cm | |
| 15 Dec. | Light snow | -3° /-8° | 0.3 mm | 0.2 cm | |
| 16 Dec. | Light drizzle | 3° /-5° | 6 mm | 1.5 cm | |
| 17 Dec. | Overcast | 3° /0° | 0.3 mm | 0 cm | |
| 18 Dec. | Fog | 2° /-3° | 6.6 mm | 0.4 cm | |
| 19 Dec. | Light rain | 4° /0° | 6.2 mm | 0 cm | |
| 20 Dec. | Mist | 1° /-3° | 0.9 mm | 0.6 cm | |
| 21 Dec. | Moderate snow | 1° /-4° | 0.9 mm | 0.7 cm | |
| 22 Dec. | Patchy rain possible | 3° /-1° | 3.5 mm | 0.7 cm | |
| 23 Dec. | Moderate or heavy snow showers | 2° /-2° | 4.4 mm | 2 cm | |
| 24 Dec. | Partly cloudy | 0° /-4° | 0.4 mm | 0.3 cm | |
| 25 Dec. | Overcast | 1° /-4° | 0.5 mm | 0.3 cm | |
| 26 Dec. | Overcast | 2° /-3° | 0.2 mm | 0.1 cm | |
| 27 Dec. | Light freezing rain | 1° /-4° | 1.2 mm | 0.1 cm | |
| 28 Dec. | Overcast | 2° /-3° | 0.6 mm | 0.4 cm | |
| 29 Dec. | Light freezing rain | 4° /0° | 6.3 mm | 1.4 cm | |
| 30 Dec. | Patchy rain possible | 3° /-2° | 1.3 mm | 0.1 cm | |
| 31 Dec. | Heavy rain at times | -2° /-5° | 1 mm | 0 cm | |
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Important Notice
Our weather forecast for Southwest Finland 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 Southwest Finland forecast closer to your planned date for the most up-to-date weather information.
Southwest Finland in December - FAQ
What are the expected maximum and minimum temperatures in Southwest Finland during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Southwest Finland during December?
Significant rainfall exceeding 146.7 mm is expected in Southwest Finland during December, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Southwest Finland in December 2025?
Southwest Finland experiences an average snowfall of 41.5 cm during December, occurring over 10 days.
What are the typical wind conditions in Southwest Finland during December?
The average wind speed in Southwest Finland during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Southwest Finland snow forecast December 2025
Track daily snowfall levels and discover Southwest Finland’s snowy potential this December ❄️
December rainfall patterns in Southwest Finland
Explore the daily rainfall trends and prepare for Southwest Finlands December weather 💧
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