Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 63°F. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Friday
18th Sep
63

55

4

2
Saturday
19th Sep
61

52

2

2
Sunday
20th Sep
61

54

4

2
Monday
21st Sep
57

50

3

2
Tuesday
22nd Sep
59

48

6

2

5-day weather forecast updated at 04:00 on Friday 18th September 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 18th September 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 63°F, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 47% chance of some rain and a moderate breeze of 14 mph from the south-west.

63
°F maximum temperature
55
°F minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
47
% chance of some rain
<5
mm of rainfall expected
63
°F wind chill
14
mph wind from SW

Mariehamn weather for Saturday 19th September 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 61°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a fresh breeze of 21 mph from the south-west.

61
°F maximum temperature
52
°F minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
42
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
21
mph wind from SW

Mariehamn weather for Sunday 20th September 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 61°F, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a fresh breeze of 21 mph from the south-west.

61
°F maximum temperature
54
°F minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
58
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
21
mph wind from SW

Mariehamn weather for Monday 21st September 2026

Expect mostly cloudy with rain in Mariehamn, Finland with a maximum temperature of 57°F, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 62% chance of some rain and a moderate breeze of 13 mph from the north.

57
°F maximum temperature
50
°F minimum temperature
mostly cloudy with rain
3
hours of sunshine
2
UV index (Low)
62
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
13
mph wind from N

Mariehamn weather for Tuesday 22nd September 2026

Expect sunshine and showers in Mariehamn, Finland with a maximum temperature of 59°F, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 10% chance of some rain and a moderate breeze of 13 mph from the north.