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.

Friday
14th Aug
20

16

4

3
Saturday
15th Aug
21

17

7

4
Sunday
16th Aug
19

15

6

2
Monday
17th Aug
18

14

12

4
Tuesday
18th Aug
17

13

5

4

5-day weather forecast updated at 04:00 on Thursday 13th 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 14th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

20
°C maximum temperature
16
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from SW

Mariehamn weather for Saturday 15th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

21
°C maximum temperature
17
°C minimum temperature
broken clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from S

Mariehamn weather for Sunday 16th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

19
°C maximum temperature
15
°C minimum temperature
broken clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
19
°C wind chill
17
kph wind from W

Mariehamn weather for Monday 17th August 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-west.

18
°C maximum temperature
14
°C minimum temperature
scattered clouds
12
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from NW

Mariehamn weather for Tuesday 18th August 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.