Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 21°C. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Saturday
29th Aug
21

13

0

2
Sunday
30th Aug
19

11

7

3
Monday
31st Aug
20

13

4

2
Tuesday
1st Sep
19

12

9

3
Wednesday
2nd Sep
19

11

14

3

5-day weather forecast updated at 04:00 on Saturday 29th 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 Saturday 29th August 2026

Expect cloudy with some rain in Mariehamn, Finland with a maximum temperature of 21°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 87% chance of some rain and a moderate breeze of 28 kph from the south-east.

21
°C maximum temperature
13
°C minimum temperature
cloudy with some rain
0
hours of sunshine
2
UV index (Low)
87
% chance of some rain
<20
mm of rainfall expected
21
°C wind chill
28
kph wind from SE

Mariehamn weather for Sunday 30th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

19
°C maximum temperature
11
°C minimum temperature
broken clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from S

Mariehamn weather for Monday 31st August 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 20°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 45% chance of some rain and a gentle breeze of 13 kph from the south-west.

20
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
45
% chance of some rain
<5
mm of rainfall expected
20
°C wind chill
13
kph wind from SW

Mariehamn weather for Tuesday 1st September 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the west.

19
°C maximum temperature
12
°C minimum temperature
broken clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from W

Mariehamn weather for Wednesday 2nd September 2026

Expect clear skies in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the west.