Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 12°C. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Tuesday
19th May
12

7

0

UV2
Wednesday
20th May
15

7

15

UV4
Thursday
21st May
14

7

13

UV4
Friday
22nd May
16

7

9

UV5
Saturday
23rd May
19

9

12

UV5

5-day weather forecast updated at 04:00 on Tuesday 19th May 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 Tuesday 19th May 2026

Expect cloudy with some rain in Mariehamn, Finland with a maximum temperature of 12°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 91% chance of some rain and a gentle breeze of 19 kph from the north.

12
°C maximum temperature
7
°C minimum temperature
cloudy with some rain
0
hours of sunshine
UV2
UV index (Low)
91
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
19
kph wind from N

Mariehamn weather for Wednesday 20th May 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

15
°C maximum temperature
7
°C minimum temperature
scattered clouds
15
hours of sunshine
UV4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from S

Mariehamn weather for Thursday 21st May 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.

14
°C maximum temperature
7
°C minimum temperature
scattered clouds
13
hours of sunshine
UV4
UV index (Moderate)
0
mm of rainfall expected
14
°C wind chill
16
kph wind from S

Mariehamn weather for Friday 22nd May 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the west.

16
°C maximum temperature
7
°C minimum temperature
broken clouds
9
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
11
kph wind from W

Mariehamn weather for Saturday 23rd May 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.