0 to 18°C
temperature
2491 hours
sunshine per day
222 mm
rain
214 days
dry
108 days
rain
43 days
snow

Climate of Mariehamn

Mariehamn has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Mariehamn is 8° degrees and there is about 222 mm of rain in a year. It is dry for 189 days a year with an average humidity of 81% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 0°C and 18°C
  • Night:the average nighttime temperature is between -2°C and 16°C
  • Rain: it rains 108 days and there is a total of approximately 222 mm rainfall
  • Snow: it snows an average of 43 days per year
  • Sun hours: throughout the year there are 2491 sun hours
Maximum temperature: between 0°C and 18°C
Warmest month: 18°C in August
Coldest month: 0°C in February
Night temperature: between -2°C and 16°C
Dry days: 214 days
Days with rain: 108 days
Days with snow: 43 days
Total rain sum: 222 mm
Hours of sunshine: 2491 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Mariehamn.

Precipitation graph

This graph shows the average amount of rainfall per month for Mariehamn.

Climate table of Mariehamn

In this climate table you can see at a glance what the average weather per month is for Mariehamn. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Mariehamn might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 1 0 2 4 9 13 17 18 15 10 6 3
Night temp. (°C) -1 -2 -1 3 7 11 16 16 13 8 5 2
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 18 14 16 10 12 18 20 27 22 24 19 22
Days with rain 5 3 7 8 8 10 11 13 11 13 11 8
Days with snow 11 10 8 2 1 - - - - - 3 8
Dry days 15 15 16 20 22 20 20 18 19 18 16 15
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 2 3 5 8 11 12 13 10 8 4 3 2
Wind force (Bft) 5 4 4 4 4 4 4 4 4 4 5 5
UV-index 1 1 1 2 3 4 5 4 4 3 2 2

Best time to visit Mariehamn

The best time to visit Mariehamn in Åland Islands is August. In this period you have a pleasant temperature and almost no precipitation. The highest average temperature in Mariehamn is 18°C in August and the lowest is 0°C in February.

Climate of Mariehamn by month

What is the average climate in a given month for Mariehamn? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Mariehamn weather experiences

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