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August 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

27 July, sun

	759 mmHg		73%
	5.4 m/s		+17

27 July, Sunday. day, 22°; night, 14°; overcast

28 July, mon

	759 mmHg		75%
	5.8 m/s		+17

28 July, Monday. day, 21°; night, 14°; rain

29 July, tue

	758 mmHg		74%
	6 m/s		+18

29 July, Tuesday. day, 21°; night, 14°; rain

30 July, wed

	758 mmHg		74%
	5.7 m/s		+17

30 July, Wednesday. day, 21°; night, 14°; rain

31 July, thu

	758 mmHg		72%
	6.1 m/s		+17

31 July, Thursday. day, 21°; night, 14°; clear

1 August, fri

	759 mmHg		72%
	5.4 m/s		+17

1 August, Friday. day, 21°; night, 14°; clear

2 August, sat

	760 mmHg		73%
	5.7 m/s		+17

2 August, Saturday. day, 21°; night, 14°; clear

3 August, sun

	759 mmHg		73%
	5.8 m/s		+17

3 August, Sunday. day, 21°; night, 13°; rain

4 August, mon

	759 mmHg		74%
	5.8 m/s		+17

4 August, Monday. day, 21°; night, 14°; clear

5 August, tue

	760 mmHg		72%
	5.9 m/s		+17

5 August, Tuesday. day, 21°; night, 13°; clear

6 August, wed

	760 mmHg		72%
	5.4 m/s		+17

6 August, Wednesday. day, 21°; night, 13°; clear

7 August, thu

	759 mmHg		73%
	5.8 m/s		+17

7 August, Thursday. day, 21°; night, 13°; rain

8 August, fri

	759 mmHg		73%
	6.1 m/s		+17

8 August, Friday. day, 21°; night, 14°; rain

9 August, sat

	759 mmHg		74%
	6.3 m/s		+17

9 August, Saturday. day, 21°; night, 14°; rain

10 August, sun

	760 mmHg		73%
	6 m/s		+17

10 August, Sunday. day, 20°; night, 13°; partly cloudy

11 August, mon

	760 mmHg		72%
	5.9 m/s		+17

11 August, Monday. day, 20°; night, 13°; clear

12 August, tue

	759 mmHg		75%
	5.9 m/s		+17

12 August, Tuesday. day, 20°; night, 13°; partly cloudy

13 August, wed

	758 mmHg		74%
	6 m/s		+17

13 August, Wednesday. day, 20°; night, 13°; clear

14 August, thu

	758 mmHg		73%
	5.7 m/s		+17

14 August, Thursday. day, 20°; night, 12°; partly cloudy

15 August, fri

	759 mmHg		75%
	6.3 m/s		+17

15 August, Friday. day, 20°; night, 13°; partly cloudy

16 August, sat

	758 mmHg		75%
	6.2 m/s		+17

16 August, Saturday. day, 20°; night, 13°; rain

17 August, sun

	758 mmHg		76%
	5.8 m/s		+17

17 August, Sunday. day, 20°; night, 13°; rain

18 August, mon

	758 mmHg		77%
	5.8 m/s		+17

18 August, Monday. day, 20°; night, 13°; rain

19 August, tue

	759 mmHg		75%
	6.2 m/s		+16

19 August, Tuesday. day, 20°; night, 13°; clear

20 August, wed

	760 mmHg		75%
	6.2 m/s		+16

20 August, Wednesday. day, 20°; night, 13°; clear

21 August, thu

	760 mmHg		75%
	5.8 m/s		+16

21 August, Thursday. day, 20°; night, 13°; partly cloudy

22 August, fri

	759 mmHg		76%
	6 m/s		+16

22 August, Friday. day, 19°; night, 13°; clear

23 August, sat

	759 mmHg		76%
	5.8 m/s		+16

23 August, Saturday. day, 19°; night, 12°; partly cloudy

24 August, sun

	759 mmHg		76%
	5.6 m/s		+16

24 August, Sunday. day, 19°; night, 12°; partly cloudy

25 August, mon

	758 mmHg		78%
	6 m/s		+16

25 August, Monday. day, 19°; night, 12°; overcast

26 August, tue

	758 mmHg		78%
	6.6 m/s		+16

26 August, Tuesday. day, 19°; night, 12°; rain

27 August, wed

	757 mmHg		77%
	6.9 m/s		+16

27 August, Wednesday. day, 18°; night, 13°; rain

28 August, thu

	758 mmHg		78%
	6.6 m/s		+16

28 August, Thursday. day, 18°; night, 12°; rain

29 August, fri

	759 mmHg		77%
	6.8 m/s		+16

29 August, Friday. day, 18°; night, 12°; overcast

30 August, sat

	759 mmHg		77%
	6 m/s		+16

30 August, Saturday. day, 18°; night, 12°; overcast

31 August, sun

	760 mmHg		78%
	6.4 m/s		+15

31 August, Sunday. day, 17°; night, 11°; rain

1 September, mon

	761 mmHg		77%
	6.1 m/s		+15

1 September, Monday. day, 17°; night, 11°; rain

2 September, tue

	761 mmHg		78%
	6.5 m/s		+15

2 September, Tuesday. day, 17°; night, 11°; rain

3 September, wed

	761 mmHg		79%
	6.4 m/s		+15

3 September, Wednesday. day, 17°; night, 11°; rain

4 September, thu

	761 mmHg		79%
	6.8 m/s		+15

4 September, Thursday. day, 17°; night, 11°; clear

5 September, fri

	761 mmHg		77%
	6.4 m/s		+15

5 September, Friday. day, 18°; night, 11°; clear

6 September, sat

	761 mmHg		77%
	5.7 m/s		+15

6 September, Saturday. day, 17°; night, 10°; partly cloudy

Average data for 10 years

Mariehamn August

10

sunny days

11

days with precipitation

6

cloudy days

10 sunny days; 11 days with precipitation; 6 cloudy days;

75

%

air humidity

4.4

m/s

WindS

60

mm of precipitation

(11% of annual average)

+17

°C

Water temperature

air humidity 75%; 60 millimeters of precipitation (11% of annual average); Wind southerly 4.4 Meters per second; Water temperature +17°

Weather graphs for August

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

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

SW

SW

SW

S

S

SW

S

S

S

S

S

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
Umeå
Kuressaare
Vaasa
Uppsala
Ventspils
Sundsvall
Visby

Cities with similar weather in August

Riga
Oslo
San Francisco
Yurmala
Palanga
Dublin
Copenhagen
Looe
Klaipeda

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

In August, the weather in Mariehamn is typically warm. Average daily high temperature in August is about 20 degrees above zero. On average, Mariehamn has 11 rainy, 10 sunny, 7 partly cloudy, and 3 cloudy days in August. The rains are usually moderate.

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