Average data for 10 years
1 December
Monday
+3°
+1°
2 December
Tuesday
+3°
0°
3 December
Wednesday
+2°
0°
4 December
Thursday
+2°
0°
5 December
Friday
+3°
0°
6 December
Saturday
+2°
0°
7 December
Sunday
+3°
0°
8 December
Monday
+2°
0°
9 December
Tuesday
+3°
0°
10 December
Wednesday
+3°
0°
11 December
Thursday
+2°
0°
12 December
Friday
+2°
0°
13 December
Saturday
+2°
−1°
14 December
Sunday
+2°
0°
15 December
Monday
+1°
0°
16 December
Tuesday
+2°
0°
17 December
Wednesday
+2°
0°
18 December
Thursday
+2°
0°
19 December
Friday
+2°
0°
20 December
Saturday
+1°
0°
21 December
Sunday
0°
−1°
22 December
Monday
0°
−2°
23 December
Tuesday
0°
−2°
24 December
Wednesday
0°
−2°
25 December
Thursday
+1°
−1°
26 December
Friday
+1°
−1°
27 December
Saturday
+1°
−1°
28 December
Sunday
+1°
−1°
29 December
Monday
+1°
−1°
30 December
Tuesday
+1°
−1°
31 December
Wednesday
+1°
−1°
Cities with similar weather in December
Latvia
Riga
Iceland
Reykyavik
Norway
Oslo
Latvia
Yurmala
Canada
Toronto
In December, the weather in Mariehamn is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Mariehamn has 12 cloudy, 8 partly cloudy, 5 rainy, 4 sunny, and 2 snowy days in December. The rains are usually moderate. December as well as January, March, April, and October is considered the most uncomfortable time to visit Mariehamn.