Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 20°C. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Thursday
27th Aug
20

10

11

3
Friday
28th Aug
19

11

4

3
Saturday
29th Aug
18

13

1

1
Sunday
30th Aug
19

13

4

3
Monday
31st Aug
19

14

3

2

5-day weather forecast updated at 04:00 on Thursday 27th August 2026 GMT

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The 5-day weather forecast for Finland (Mariehamn) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Mariehamn weather forecast by day

Below are the detailed weather forecasts for Mariehamn for the next 5 days.

Mariehamn weather for Thursday 27th August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south.

20
°C maximum temperature
10
°C minimum temperature
scattered clouds
11
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
6
kph wind from S

Mariehamn weather for Friday 28th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-east.

19
°C maximum temperature
11
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
17
kph wind from SE

Mariehamn weather for Saturday 29th August 2026

Expect mostly cloudy with rain in Mariehamn, Finland with a maximum temperature of 18°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 57% chance of some rain and a fresh breeze of 29 kph from the south-east.

18
°C maximum temperature
13
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
1
UV index (Low)
57
% chance of some rain
<10
mm of rainfall expected
18
°C wind chill
29
kph wind from SE

Mariehamn weather for Sunday 30th August 2026

19
°C maximum temperature
13
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
19
kph wind from S

Mariehamn weather for Monday 31st August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south.