Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 18°C. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Monday
17th Aug
18

13

9

4
Tuesday
18th Aug
18

12

9

3
Wednesday
19th Aug
19

11

10

4
Thursday
20th Aug
19

12

13

3
Friday
21st Aug
19

13

12

3

5-day weather forecast updated at 04:00 on Monday 17th 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 Monday 17th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.

18
°C maximum temperature
13
°C minimum temperature
broken clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from NW

Mariehamn weather for Tuesday 18th August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the west.

18
°C maximum temperature
12
°C minimum temperature
scattered clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from W

Mariehamn weather for Wednesday 19th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

19
°C maximum temperature
11
°C minimum temperature
broken clouds
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
8
kph wind from S

Mariehamn weather for Thursday 20th August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-west.

19
°C maximum temperature
12
°C minimum temperature
scattered clouds
13
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
9
kph wind from SW

Mariehamn weather for Friday 21st August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.