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Weather in Mariehamn for December 2025

Your guide to Mariehamn weather in December - trends and predictions

    Snow Forecast ❄️

  • The climate of Mariehamn in December is quite snowy, averaging 15 snowy days.

    • Temperatures

  • In general, the average temperature in Mariehamn at the beginning of December is 2.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 3.3 °C by the end of December.

Average dry days
9
Dry days
Average rainy days
7
Rainy days
Average snowy days
15
Snow days
Average temperatures
3°/1°
Temperatures
Average wind speed
38 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Mariehamn Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Blowing snow
3°
2
Moderate or heavy snow showers
2°
3
Moderate or heavy snow showers
2°
4
Moderate or heavy snow showers
2°
5
Partly cloudy
2°
6
Light snow
3°
7
Light snow showers
2°
8
Blizzard
2°
9
Blizzard
2°
10
Light snow showers
2°
11
Blizzard
3°
12
Blizzard
1°
13
Light snow showers
1°
14
Light snow showers
1°
15
Light snow
1°
16
Patchy rain possible
6°
17
Patchy rain possible
5°
18
Overcast
4°
19
Patchy rain possible
6°
20
Partly cloudy
3°
21
Moderate or heavy snow showers
3°
22
Patchy rain possible
4°
23
Heavy rain at times
3°
24
Light snow
2°
25
Overcast
3°
26
Patchy rain possible
4°
27
Moderate rain at times
3°
28
Overcast
3°
29
Moderate or heavy rain shower
5°
30
Overcast
4°
31
Light snow
1°

Temperatures trend during December in Mariehamn

See the weather trend as well as the moving average line

December weather in Mariehamn day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Blowing snow
Blowing snow
 3° /2° 0.6 mm 0.1 cm
2 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /1° 2.9 mm 0.5 cm
3 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-1° 5.1 mm 1.2 cm
4 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /0° 1 mm 0.5 cm
5 Dec. Partly cloudy
Partly cloudy
 2° /-1° 0.4 mm 0.1 cm
6 Dec. Light snow
Light snow
 3° /0° 1 mm 0.1 cm
7 Dec. Light snow showers
Light snow showers
 2° /1° 1.1 mm 0.3 cm
8 Dec. Blizzard
Blizzard
 2° /2° 2.2 mm 0.1 cm
9 Dec. Blizzard
Blizzard
 2° /1° 1 mm 0 cm
10 Dec. Light snow showers
Light snow showers
 2° /1° 0.7 mm 0.2 cm
11 Dec. Blizzard
Blizzard
 3° /1° 1.1 mm 0 cm
12 Dec. Blizzard
Blizzard
 1° /0° 1 mm 0 cm
13 Dec. Light snow showers
Light snow showers
 1° /-1° 0.2 mm 0 cm
14 Dec. Light snow showers
Light snow showers
 1° /-1° 5.1 mm 0.8 cm
15 Dec. Light snow
Light snow
 1° /-2° 0.8 mm 0.1 cm
16 Dec. Patchy rain possible
Patchy rain possible
 6° /0° 0.7 mm 0.1 cm
17 Dec. Patchy rain possible
Patchy rain possible
 5° /2° 0.1 mm 0 cm
18 Dec. Overcast
Overcast
 4° /2° 6.2 mm 0.5 cm
19 Dec. Patchy rain possible
Patchy rain possible
 6° /2° 0.8 mm 0 cm
20 Dec. Partly cloudy
Partly cloudy
 3° /0° 1.5 mm 1 cm
21 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 3° /0° 3.2 mm 1.9 cm
22 Dec. Patchy rain possible
Patchy rain possible
 4° /1° 2.8 mm 0 cm
23 Dec. Heavy rain at times
Heavy rain at times
 3° /0° 3.6 mm 0.4 cm
24 Dec. Light snow
Light snow
 2° /-1° 0.3 mm 0 cm
25 Dec. Overcast
Overcast
 3° /0° 1.2 mm 0 cm
26 Dec. Patchy rain possible
Patchy rain possible
 4° /1° 0.9 mm 0.3 cm
27 Dec. Moderate rain at times
Moderate rain at times
 3° /1° 1.9 mm 0 cm
28 Dec. Overcast
Overcast
 3° /0° 0.8 mm 0 cm
29 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 5° /2° 5.4 mm 0 cm
30 Dec. Overcast
Overcast
 4° /0° 2.3 mm 0.2 cm
31 Dec. Light snow
Light snow
 1° /-1° 0.7 mm 0 cm
Next
Important Notice
Our weather forecast for Mariehamn 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 Mariehamn forecast closer to your planned date for the most up-to-date weather information.
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Mariehamn in December - FAQ

What are the expected maximum and minimum temperatures in Mariehamn during December?
During December, expect a variety of temperatures with highs around 3° and lows near 1°, suitable for diverse activities and preferences.
How much rainfall should be expected in Mariehamn during December?
Moderate rainfall is anticipated in Mariehamn during December, with a total of 56.4 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
Will it snow in Mariehamn in December 2025?
Mariehamn experiences an average snowfall of 8.48333 cm during December, occurring over 15 days.
What are the typical wind conditions in Mariehamn during December?
The average wind speed in Mariehamn during December is 38 km/h, suggesting breezy to windy conditions, depending on your activities.

Mariehamn snow forecast December 2025

Track daily snowfall levels and discover Mariehamn’s snowy potential this December ❄️

December rainfall patterns in Mariehamn

Explore the daily rainfall trends and prepare for Mariehamns December weather 💧

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Location coordinates Where is Mariehamn?

Get accurate weather forecasts for Mariehamn, located at latitude 60.097 and longitude 19.935. Stay updated with localized weather information tailored for Mariehamn.

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