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South Ostrobothnia (Lappajärvi)
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Weather in South Ostrobothnia for December 2025

Your guide to South Ostrobothnia weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Traffic Weather Warning - See hour by hour.

    • Snow Forecast ❄️

  • South Ostrobothnia typically experiences moderate snowfall in December, with an average of 10 snowy days.
    According to South Ostrobothnia snow forecast for December 2025, 1 snowy day is expected until the end of the month at Wednesday, 17 December.

    • Temperatures

  • Until now, December 2025 in South Ostrobothnia has been nearly identical to the historical average, with a temperature of 2.3 °C (showing only a slight deviation of 0.4 °C).

  • Expect cooler weather in the next days in South Ostrobothnia with the forecast suggesting a temperature of -0.1 °C, lower than the historical average.

  • In general, the average temperature in South Ostrobothnia at the beginning of December is 2.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -2.6 °C by the end of December.

Average dry days
17
Dry days
Average rainy days
4
Rainy days
Average snowy days
10
Snow days
Average temperatures
0°/-5°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
87 %
Avg humidity

South Ostrobothnia Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
5°
2
Moderate or heavy rain shower
7°
3
Overcast
3°
4
Sunny
1°
5
Cloudy
1°
6
Light freezing rain
2°
7
Overcast
1°
8
Overcast
2°
9
Overcast
2°
10
Patchy rain possible
4°
11
Sunny
4°
12
Patchy moderate snow
-2°
13
Patchy moderate snow
-2°
14
Moderate snow
-1°
15
Partly cloudy
-1°
16
Weather Alert Patchy rain possible
3°
17
Weather Alert Moderate rain
4°
18
Weather Alert Freezing fog
2°
19
Weather Alert Patchy rain possible
4°
20
Patchy rain possible
5°
21
Fog
2°
22
Fog
2°
23
Sunny
-2°
24
Sunny
-7°
25
Sunny
-5°
26
Sunny
-2°
27
Partly cloudy
-2°
28
Sunny
-3°
29
Partly cloudy
-3°
30
Light freezing rain
0°
31
Light snow
-3°

Temperatures trend during December in South Ostrobothnia

See the weather trend as well as the moving average line

December weather in South Ostrobothnia day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Overcast
Overcast
 5° /0° 6.2 mm 0 cm
2 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 7° /0° 4 mm 0 cm
3 Dec. Overcast
Overcast
 3° /0° 0 mm 0 cm
4 Dec. Sunny
Sunny
 1° /-2° 0.1 mm 0 cm
5 Dec. Cloudy
Cloudy
 1° /-2° 0.4 mm 0 cm
6 Dec. Light freezing rain
Light freezing rain
 2° /0° 2.8 mm 0 cm
7 Dec. Overcast
Overcast
 1° /-1° 1.4 mm 0 cm
8 Dec. Overcast
Overcast
 2° /-1° 3.1 mm 1.2 cm
9 Dec. Overcast
Overcast
 2° /-1° 0.9 mm 0.2 cm
10 Dec. Patchy rain possible
Patchy rain possible
 4° /0° 4.5 mm 1.9 cm
11 Dec. Sunny
Sunny
 4° /-1° 0.4 mm 0.3 cm
12 Dec. Patchy moderate snow
Patchy moderate snow
 -2° /-5° 0.7 mm 0.2 cm
13 Dec. Patchy moderate snow
Patchy moderate snow
 -2° /-5° 1.6 mm 0.9 cm
14 Dec. Moderate snow
Moderate snow
 -1° /-5° 8.6 mm 5.8 cm
15 Dec. Partly cloudy
Partly cloudy
 -1° /-8° 0.4 mm 0 cm
16 Dec. Patchy rain possible
Patchy rain possible
 3° /1° 1 mm 0 cm
17 Dec. Moderate rain
Moderate rain
 4° /1° 6 mm 0.2 cm
18 Dec. Freezing fog
Freezing fog
 2° /-2° 0 mm 0 cm
19 Dec. Patchy rain possible
Patchy rain possible
 4° /3° 1.1 mm 0 cm
20 Dec. Patchy rain possible
Patchy rain possible
 5° /2° 0.8 mm 0 cm
21 Dec. Fog
Fog
 2° /-1° 0 mm 0 cm
22 Dec. Fog
Fog
 2° /-1° 1.7 mm 0 cm
23 Dec. Sunny
Sunny
 -2° /-6° 0 mm 0 cm
24 Dec. Sunny
Sunny
 -7° /-7° 0 mm 0 cm
25 Dec. Sunny
Sunny
 -5° /-7° 0 mm 0 cm
26 Dec. Sunny
Sunny
 -2° /-3° 0 mm 0 cm
27 Dec. Partly cloudy
Partly cloudy
 -2° /-3° 0 mm 0 cm
28 Dec. Sunny
Sunny
 -3° /-4° 0 mm 0 cm
29 Dec. Partly cloudy
Partly cloudy
 -3° /-4° 0 mm 0 cm
30 Dec. Light freezing rain
Light freezing rain
 0° /-3° 0.3 mm 0 cm
31 Dec. Light snow
Light snow
 -3° /-4° 0.1 mm 0.1 cm
Next
Important Notice
Our weather forecast for South Ostrobothnia 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 South Ostrobothnia forecast closer to your planned date for the most up-to-date weather information.
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South Ostrobothnia in December - FAQ

What are the expected maximum and minimum temperatures in South Ostrobothnia 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 South Ostrobothnia during December?
Moderate rainfall is anticipated in South Ostrobothnia during December, with a total of 60.7 mm spread over approximately 4 days. Considering plans for rainy days is advisable.
Will it snow in South Ostrobothnia in December 2025?
South Ostrobothnia experiences an average snowfall of 24.56 cm during December, occurring over 10 days.
What are the typical wind conditions in South Ostrobothnia during December?
The average wind speed in South Ostrobothnia during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

South Ostrobothnia snow forecast December 2025

Track daily snowfall levels and discover South Ostrobothnia’s snowy potential this December ❄️
On average, South Ostrobothnia sees 10 snowy days during December, with approximately 24.6 cm of total snowfall.

December rainfall patterns in South Ostrobothnia

Explore the daily rainfall trends and prepare for South Ostrobothnias December weather 💧
Typically, South Ostrobothnia has 4 rainy days in December with a total of 60.7 mm of rainfall.
Provinces in South Ostrobothnia
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Järviseutu
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Lappajärvi
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Location coordinates Where is South Ostrobothnia?

Get accurate weather forecasts for South Ostrobothnia, located at latitude 63.2 and longitude 23.633. Stay updated with localized weather information tailored for South Ostrobothnia.

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