Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 17°C. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Friday
21st Aug
17

7

8

3
Saturday
22nd Aug
19

10

1

3
Sunday
23rd Aug
18

12

4

3
Monday
24th Aug
17

12

6

3
Tuesday
25th Aug
18

12

8

3

5-day weather forecast updated at 04:00 on Friday 21st 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 Friday 21st August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

17
°C maximum temperature
7
°C minimum temperature
scattered clouds
8
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from S

Mariehamn weather for Saturday 22nd August 2026

Expect fog in low lying areas in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

19
°C maximum temperature
10
°C minimum temperature
fog in low lying areas
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
11
kph wind from N

Mariehamn weather for Sunday 23rd August 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 32% chance of some rain and a moderate breeze of 23 kph from the north.

18
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
3
UV index (Moderate)
32
% chance of some rain
<5
mm of rainfall expected
18
°C wind chill
23
kph wind from N

Mariehamn weather for Monday 24th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north-west.

17
°C maximum temperature
12
°C minimum temperature
broken clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
21
kph wind from NW

Mariehamn weather for Tuesday 25th August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north-west.