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August weather forecast in Reykyavik

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

	756 mmHg		80%
	4.9 m/s		+14

27 July, Sunday. day, 14°; night, 9°; partly cloudy

28 July, mon

	757 mmHg		81%
	5 m/s		+13

28 July, Monday. day, 14°; night, 9°; rain

29 July, tue

	756 mmHg		82%
	4.6 m/s		+14

29 July, Tuesday. day, 15°; night, 10°; rain

30 July, wed

	756 mmHg		81%
	5 m/s		+15

30 July, Wednesday. day, 15°; night, 10°; rain

31 July, thu

	757 mmHg		81%
	5 m/s		+13

31 July, Thursday. day, 14°; night, 10°; rain

1 August, fri

	757 mmHg		80%
	4.3 m/s		+14

1 August, Friday. day, 14°; night, 9°; partly cloudy

2 August, sat

	756 mmHg		81%
	4.5 m/s		+14

2 August, Saturday. day, 13°; night, 9°; partly cloudy

3 August, sun

	756 mmHg		81%
	4.8 m/s		+13

3 August, Sunday. day, 13°; night, 9°; overcast

4 August, mon

	756 mmHg		80%
	4.69 m/s		+14

4 August, Monday. day, 13°; night, 9°; overcast

5 August, tue

	756 mmHg		81%
	4.69 m/s		+13

5 August, Tuesday. day, 14°; night, 9°; rain

6 August, wed

	758 mmHg		81%
	4.6 m/s		+13

6 August, Wednesday. day, 13°; night, 9°; rain

7 August, thu

	758 mmHg		82%
	5.1 m/s		+13

7 August, Thursday. day, 13°; night, 9°; rain

8 August, fri

	758 mmHg		82%
	5 m/s		+13

8 August, Friday. day, 13°; night, 9°; rain

9 August, sat

	756 mmHg		82%
	4.6 m/s		+13

9 August, Saturday. day, 13°; night, 9°; rain

10 August, sun

	757 mmHg		82%
	5 m/s		+13

10 August, Sunday. day, 13°; night, 9°; rain

11 August, mon

	757 mmHg		82%
	4.8 m/s		+13

11 August, Monday. day, 13°; night, 10°; overcast

12 August, tue

	757 mmHg		82%
	4.8 m/s		+13

12 August, Tuesday. day, 14°; night, 9°; partly cloudy

13 August, wed

	756 mmHg		81%
	4.8 m/s		+13

13 August, Wednesday. day, 13°; night, 9°; partly cloudy

14 August, thu

	755 mmHg		82%
	5 m/s		+12

14 August, Thursday. day, 13°; night, 9°; rain

15 August, fri

	754 mmHg		83%
	5 m/s		+13

15 August, Friday. day, 13°; night, 9°; rain

16 August, sat

	754 mmHg		81%
	5.2 m/s		+13

16 August, Saturday. day, 13°; night, 8°; partly cloudy

17 August, sun

	755 mmHg		80%
	4.8 m/s		+13

17 August, Sunday. day, 13°; night, 8°; clear

18 August, mon

	757 mmHg		80%
	4.69 m/s		+13

18 August, Monday. day, 13°; night, 8°; clear

19 August, tue

	756 mmHg		79%
	4.5 m/s		+13

19 August, Tuesday. day, 13°; night, 8°; clear

20 August, wed

	756 mmHg		79%
	4.9 m/s		+13

20 August, Wednesday. day, 13°; night, 8°; clear

21 August, thu

	755 mmHg		81%
	4.9 m/s		+12

21 August, Thursday. day, 13°; night, 8°; rain

22 August, fri

	755 mmHg		82%
	4.9 m/s		+12

22 August, Friday. day, 13°; night, 8°; rain

23 August, sat

	755 mmHg		82%
	5 m/s		+12

23 August, Saturday. day, 13°; night, 8°; rain

24 August, sun

	756 mmHg		82%
	4.69 m/s		+12

24 August, Sunday. day, 13°; night, 8°; partly cloudy

25 August, mon

	756 mmHg		81%
	5.1 m/s		+12

25 August, Monday. day, 12°; night, 8°; rain

26 August, tue

	755 mmHg		83%
	5 m/s		+12

26 August, Tuesday. day, 12°; night, 8°; rain

27 August, wed

	756 mmHg		81%
	5 m/s		+11

27 August, Wednesday. day, 12°; night, 8°; overcast

28 August, thu

	755 mmHg		82%
	5.4 m/s		+11

28 August, Thursday. day, 12°; night, 8°; rain

29 August, fri

	756 mmHg		82%
	5.2 m/s		+11

29 August, Friday. day, 12°; night, 8°; overcast

30 August, sat

	756 mmHg		84%
	5.9 m/s		+11

30 August, Saturday. day, 12°; night, 8°; rain

31 August, sun

	754 mmHg		84%
	6.4 m/s		+11

31 August, Sunday. day, 12°; night, 8°; rain

1 September, mon

	753 mmHg		83%
	5.9 m/s		+11

1 September, Monday. day, 12°; night, 8°; rain

2 September, tue

	754 mmHg		81%
	5.7 m/s		+11

2 September, Tuesday. day, 12°; night, 8°; partly cloudy

3 September, wed

	754 mmHg		83%
	5.6 m/s		+11

3 September, Wednesday. day, 12°; night, 8°; partly cloudy

4 September, thu

	755 mmHg		83%
	6.1 m/s		+11

4 September, Thursday. day, 11°; night, 8°; rain

5 September, fri

	755 mmHg		83%
	5.4 m/s		+11

5 September, Friday. day, 12°; night, 7°; partly cloudy

6 September, sat

	756 mmHg		83%
	5.5 m/s		+11

6 September, Saturday. day, 11°; night, 8°; overcast

Average data for 10 years

Reykyavik August

4

sunny days

16

days with precipitation

17

cloudy days

4 sunny days; 16 days with precipitation; 17 cloudy days;

81

%

air humidity

3.5

m/s

WindS

100

mm of precipitation

(8% of annual average)

+13

°C

Water temperature

air humidity 81%; 100 millimeters of precipitation (8% of annual average); Wind southerly 3.5 Meters per second; Water temperature +13°

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

SE

SE

SE

SE

SE

SE

S

SE

SE

S

S

S

SE

S

SE

SE

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

Torshavn
Akureyri
Isafjordur
Jan Mayen
Selfoss
Vestmannaeyjar
Borgarnes
Akranes
Sejdisfjordur

Cities with similar weather in August

Cholpon-Ata
Sydney
Dublin
Buenos Aires
Melbourne
Wellington
Auckland
Capetown
Nuuk

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

In August, the weather in Reykyavik is typically warm. Average daily high temperature in August is about 13 degrees above zero. On average, Reykyavik has 16 rainy, 6 partly cloudy, 5 cloudy, and 4 sunny days in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Reykyavik.

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