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May weather forecast in Mariehamn

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

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

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

26 April, sun

	744 mmHg		68%
	8.1 m/s		+4

26 April, Sunday. day, 8°; night, 7°; partly cloudy

27 April, mon

	746 mmHg		69%
	8.3 m/s		+4

27 April, Monday. day, 8°; night, 6°; clear

28 April, tue

	745 mmHg		77%
	9.6 m/s		+4

28 April, Tuesday. day, 7°; night, 7°; clear

29 April, wed

	747 mmHg		73%
	9.1 m/s		+4

29 April, Wednesday. day, 7°; night, 6°; clear

30 April, thu

	749 mmHg		67%
	8.5 m/s		+4

30 April, Thursday. day, 8°; night, 6°; partly cloudy

1 May, fri

	749 mmHg		67%
	8.1 m/s		+4

1 May, Friday. day, 7°; night, 7°; clear

2 May, sat

	750 mmHg		66%
	6.8 m/s		+4

2 May, Saturday. day, 8°; night, 7°; partly cloudy

3 May, sun

	748 mmHg		70%
	8.1 m/s		+4

3 May, Sunday. day, 7°; night, 7°; partly cloudy

4 May, mon

	747 mmHg		74%
	7.3 m/s		+5

4 May, Monday. day, 8°; night, 6°; partly cloudy

5 May, tue

	747 mmHg		72%
	7.8 m/s		+5

5 May, Tuesday. day, 9°; night, 7°; clear

6 May, wed

	748 mmHg		68%
	8.8 m/s		+5

6 May, Wednesday. day, 8°; night, 7°; partly cloudy

7 May, thu

	748 mmHg		67%
	8.3 m/s		+5

7 May, Thursday. day, 9°; night, 8°; partly cloudy

8 May, fri

	747 mmHg		68%
	7.9 m/s		+5

8 May, Friday. day, 9°; night, 8°; partly cloudy

9 May, sat

	746 mmHg		75%
	6.9 m/s		+5

9 May, Saturday. day, 10°; night, 9°; rain

10 May, sun

	746 mmHg		72%
	7.5 m/s		+6

10 May, Sunday. day, 11°; night, 9°; partly cloudy

11 May, mon

	745 mmHg		76%
	8.3 m/s		+6

11 May, Monday. day, 10°; night, 8°; partly cloudy

12 May, tue

	744 mmHg		79%
	9.3 m/s		+6

12 May, Tuesday. day, 8°; night, 8°; partly cloudy

13 May, wed

	746 mmHg		74%
	7.5 m/s		+6

13 May, Wednesday. day, 8°; night, 8°; clear

14 May, thu

	746 mmHg		74%
	8.8 m/s		+6

14 May, Thursday. day, 8°; night, 8°; clear

15 May, fri

	746 mmHg		75%
	8.1 m/s		+6

15 May, Friday. day, 9°; night, 7°; partly cloudy

16 May, sat

	745 mmHg		79%
	6.9 m/s		+6

16 May, Saturday. day, 9°; night, 8°; clear

17 May, sun

	745 mmHg		82%
	7 m/s		+6

17 May, Sunday. day, 11°; night, 9°; overcast

18 May, mon

	744 mmHg		81%
	8.3 m/s		+6

18 May, Monday. day, 12°; night, 10°; clear

19 May, tue

	747 mmHg		75%
	6.9 m/s		+7

19 May, Tuesday. day, 12°; night, 10°; clear

20 May, wed

	747 mmHg		76%
	7 m/s		+7

20 May, Wednesday. day, 12°; night, 10°; partly cloudy

21 May, thu

	746 mmHg		73%
	8.3 m/s		+7

21 May, Thursday. day, 12°; night, 11°; clear

22 May, fri

	745 mmHg		76%
	9.3 m/s		+7

22 May, Friday. day, 12°; night, 11°; partly cloudy

23 May, sat

	746 mmHg		69%
	8.6 m/s		+7

23 May, Saturday. day, 11°; night, 11°; clear

24 May, sun

	746 mmHg		72%
	7.5 m/s		+7

24 May, Sunday. day, 12°; night, 11°; partly cloudy

25 May, mon

	747 mmHg		75%
	8.5 m/s		+8

25 May, Monday. day, 11°; night, 11°; rain

26 May, tue

	745 mmHg		75%
	8.8 m/s		+8

26 May, Tuesday. day, 11°; night, 9°; clear

27 May, wed

	746 mmHg		74%
	8 m/s		+8

27 May, Wednesday. day, 12°; night, 10°; clear

28 May, thu

	746 mmHg		70%
	9.1 m/s		+8

28 May, Thursday. day, 12°; night, 11°; rain

29 May, fri

	747 mmHg		73%
	8.5 m/s		+8

29 May, Friday. day, 12°; night, 11°; partly cloudy

30 May, sat

	746 mmHg		73%
	7.3 m/s		+9

30 May, Saturday. day, 12°; night, 11°; clear

31 May, sun

	747 mmHg		72%
	8.6 m/s		+9

31 May, Sunday. day, 12°; night, 12°; partly cloudy

1 June, mon

	747 mmHg		67%
	8.6 m/s		+9

1 June, Monday. day, 13°; night, 12°; partly cloudy

2 June, tue

	744 mmHg		73%
	8.8 m/s		+9

2 June, Tuesday. day, 13°; night, 13°; partly cloudy

3 June, wed

	745 mmHg		73%
	9.5 m/s		+9

3 June, Wednesday. day, 12°; night, 11°; clear

4 June, thu

	746 mmHg		69%
	8.1 m/s		+9

4 June, Thursday. day, 12°; night, 11°; clear

5 June, fri

	747 mmHg		75%
	8.1 m/s		+9

5 June, Friday. day, 12°; night, 11°; partly cloudy

6 June, sat

	746 mmHg		68%
	8.3 m/s		+9

6 June, Saturday. day, 14°; night, 12°; partly cloudy

Average data for 10 years

Mariehamn May

12

sunny days

3

days with precipitation

16

cloudy days

12 sunny days; 3 days with precipitation; 16 cloudy days;

74

%

air humidity

6

m/s

WindSW

31

mm of precipitation

(7% of annual average)

+6

°C

Water temperature

air humidity 74%; 31 millimeters of precipitation (7% of annual average); Wind south-westerly 6 Meters per second; Water temperature +6°

Weather graphs for May

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

NW

W

N

SW

SW

S

N

SW

SW

SW

SW

NW

NW

NW

SE

SE

SE

S

SW

SW

SW

W

SW

SW

N

W

S

W

S

W

NW

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Stockholm
Pori
Kuressaare
Vaasa
Ventspils
Uppsala
Sundsvall
Liepaya
Visby

Cities with similar weather in May

Cholpon-Ata
Reykyavik
Oslo
Palanga
Dublin
Wellington
Looe
Edinburgh
Klaipeda

The weather forecast for May 2025 is based on historical data from the past 10 years.

In May, the weather in Mariehamn is typically warm. Average daily high temperature in May is about 10 degrees above zero. On average, Mariehamn has 15 partly cloudy, 12 sunny, 3 rainy, and 1 cloudy day in May. The rains are usually light.

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