Mariehamn weather live forecast

Today's maximum temperature in Mariehamn is expected to be 17°C. Select a day from the live weather forecast for Mariehamn, Finland for more weather parameters.

Saturday
19th Sep
17

13

1

2
Sunday
20th Sep
16

12

6

2
Monday
21st Sep
14

10

2

1
Tuesday
22nd Sep
15

10

8

2
Wednesday
23rd Sep
14

8

2

2

5-day weather forecast updated at 04:00 on Saturday 19th September 2026 GMT

More about Mariehamn

Mariehamn by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Finland

TUI: Top deals & discounts on 2026/2027 holidays

Sale

Explore latest special offers & online deals from TUI
Free child places & £0 deposits with direct debit available
Book summer & winter sun holidays in 2026/2027

Go to TUI deal >>

View all TUI offers

TUI deal finder

Destination

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 19th September 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 17°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 37% chance of some rain and a fresh breeze of 33 kph from the south-west.

17
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
2
UV index (Low)
37
% chance of some rain
<5
mm of rainfall expected
17
°C wind chill
33
kph wind from SW

Mariehamn weather for Sunday 20th September 2026

Expect sunshine and showers in Mariehamn, Finland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 45% chance of some rain and a fresh breeze of 32 kph from the south-west.

16
°C maximum temperature
12
°C minimum temperature
sunshine and showers
6
hours of sunshine
2
UV index (Low)
45
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
32
kph wind from SW

Mariehamn weather for Monday 21st September 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 14°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 63% chance of some rain and a moderate breeze of 23 kph from the north.

14
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
1
UV index (Low)
63
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
23
kph wind from N

Mariehamn weather for Tuesday 22nd September 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 15°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north.

15
°C maximum temperature
10
°C minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from N

Mariehamn weather for Wednesday 23rd September 2026

Expect broken clouds in Mariehamn, Finland with a maximum temperature of 14°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.