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.

Friday
15th May
12

7

12

4
Saturday
16th May
13

6

7

4
Sunday
17th May
11

6

13

3
Monday
18th May
14

5

14

4
Tuesday
19th May
12

7

0

2

5-day weather forecast updated at 04:00 on Friday 15th May 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 Friday 15th May 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-east.

12
°C maximum temperature
7
°C minimum temperature
scattered clouds
12
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from SE

Mariehamn weather for Saturday 16th May 2026

Expect mostly cloudy with light rain in Mariehamn, Finland with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 17 kph from the south.

13
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
7
hours of sunshine
4
UV index (Moderate)
54
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
17
kph wind from S

Mariehamn weather for Sunday 17th May 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south.

11
°C maximum temperature
6
°C minimum temperature
scattered clouds
13
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from S

Mariehamn weather for Monday 18th May 2026

Expect scattered clouds in Mariehamn, Finland with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south.

14
°C maximum temperature
5
°C minimum temperature
scattered clouds
14
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from S

Mariehamn weather for Tuesday 19th May 2026

Expect isolated thunderstorms in Mariehamn, Finland with a maximum temperature of 12°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 18% chance of some rain and a light breeze of 11 kph from the north-east.