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August weather forecast in San Sebastian

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

	763 mmHg		80%
	6.1 m/s		+23

27 July, Sunday. day, 21°; night, 20°; rain

28 July, mon

	764 mmHg		79%
	6.4 m/s		+22

28 July, Monday. day, 21°; night, 20°; rain

29 July, tue

	764 mmHg		79%
	6 m/s		+22

29 July, Tuesday. day, 21°; night, 20°; clear

30 July, wed

	764 mmHg		78%
	5.7 m/s		+23

30 July, Wednesday. day, 21°; night, 20°; partly cloudy

31 July, thu

	763 mmHg		78%
	6.3 m/s		+24

31 July, Thursday. day, 21°; night, 20°; clear

1 August, fri

	762 mmHg		78%
	6.4 m/s		+22

1 August, Friday. day, 21°; night, 20°; rain

2 August, sat

	763 mmHg		78%
	6 m/s		+23

2 August, Saturday. day, 21°; night, 20°; rain

3 August, sun

	764 mmHg		78%
	5.9 m/s		+23

3 August, Sunday. day, 21°; night, 20°; clear

4 August, mon

	764 mmHg		78%
	6.1 m/s		+23

4 August, Monday. day, 21°; night, 20°; rain

5 August, tue

	763 mmHg		79%
	6.4 m/s		+23

5 August, Tuesday. day, 21°; night, 20°; partly cloudy

6 August, wed

	763 mmHg		78%
	6.2 m/s		+23

6 August, Wednesday. day, 21°; night, 20°; rain

7 August, thu

	763 mmHg		78%
	6.4 m/s		+22

7 August, Thursday. day, 21°; night, 20°; rain

8 August, fri

	763 mmHg		78%
	6.6 m/s		+21

8 August, Friday. day, 22°; night, 20°; rain

9 August, sat

	763 mmHg		77%
	6.7 m/s		+23

9 August, Saturday. day, 22°; night, 20°; partly cloudy

10 August, sun

	763 mmHg		78%
	6.5 m/s		+23

10 August, Sunday. day, 22°; night, 20°; clear

11 August, mon

	763 mmHg		77%
	6.6 m/s		+23

11 August, Monday. day, 22°; night, 20°; clear

12 August, tue

	763 mmHg		80%
	6.6 m/s		+22

12 August, Tuesday. day, 21°; night, 20°; rain

13 August, wed

	764 mmHg		78%
	6.5 m/s		+22

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

14 August, thu

	763 mmHg		79%
	6.5 m/s		+23

14 August, Thursday. day, 21°; night, 20°; clear

15 August, fri

	763 mmHg		80%
	6.7 m/s		+22

15 August, Friday. day, 21°; night, 20°; partly cloudy

16 August, sat

	763 mmHg		78%
	5.6 m/s		+23

16 August, Saturday. day, 21°; night, 20°; partly cloudy

17 August, sun

	762 mmHg		77%
	5.6 m/s		+23

17 August, Sunday. day, 21°; night, 20°; partly cloudy

18 August, mon

	762 mmHg		78%
	6.2 m/s		+24

18 August, Monday. day, 21°; night, 20°; partly cloudy

19 August, tue

	763 mmHg		78%
	6.3 m/s		+23

19 August, Tuesday. day, 21°; night, 20°; rain

20 August, wed

	764 mmHg		80%
	6.5 m/s		+23

20 August, Wednesday. day, 21°; night, 19°; rain

21 August, thu

	764 mmHg		78%
	6.3 m/s		+24

21 August, Thursday. day, 21°; night, 20°; clear

22 August, fri

	764 mmHg		79%
	6 m/s		+24

22 August, Friday. day, 22°; night, 20°; clear

23 August, sat

	763 mmHg		80%
	6.1 m/s		+22

23 August, Saturday. day, 22°; night, 20°; clear

24 August, sun

	763 mmHg		80%
	6.8 m/s		+23

24 August, Sunday. day, 22°; night, 20°; partly cloudy

25 August, mon

	763 mmHg		79%
	7 m/s		+24

25 August, Monday. day, 21°; night, 20°; rain

26 August, tue

	763 mmHg		79%
	6.9 m/s		+23

26 August, Tuesday. day, 21°; night, 20°; rain

27 August, wed

	763 mmHg		80%
	6.6 m/s		+22

27 August, Wednesday. day, 22°; night, 20°; clear

28 August, thu

	763 mmHg		79%
	7 m/s		+23

28 August, Thursday. day, 21°; night, 20°; rain

29 August, fri

	763 mmHg		77%
	6.9 m/s		+24

29 August, Friday. day, 21°; night, 19°; rain

30 August, sat

	764 mmHg		76%
	6.5 m/s		+24

30 August, Saturday. day, 21°; night, 19°; clear

31 August, sun

	764 mmHg		75%
	6.5 m/s		+23

31 August, Sunday. day, 21°; night, 19°; clear

1 September, mon

	764 mmHg		77%
	6.3 m/s		+22

1 September, Monday. day, 21°; night, 19°; partly cloudy

2 September, tue

	764 mmHg		75%
	6.1 m/s		+22

2 September, Tuesday. day, 21°; night, 19°; partly cloudy

3 September, wed

	763 mmHg		76%
	6 m/s		+22

3 September, Wednesday. day, 21°; night, 19°; clear

4 September, thu

	763 mmHg		79%
	6.2 m/s		+23

4 September, Thursday. day, 21°; night, 19°; rain

5 September, fri

	763 mmHg		77%
	6.4 m/s		+24

5 September, Friday. day, 21°; night, 19°; clear

6 September, sat

	763 mmHg		76%
	6 m/s		+22

6 September, Saturday. day, 21°; night, 19°; clear

Average data for 10 years

San Sebastian August

10

sunny days

13

days with precipitation

3

cloudy days

10 sunny days; 13 days with precipitation; 3 cloudy days;

78

%

air humidity

4

m/s

WindSW

77

mm of precipitation

(6% of annual average)

+23

°C

Water temperature

air humidity 78%; 77 millimeters of precipitation (6% of annual average); Wind south-westerly 4 Meters per second; Water temperature +23°

Weather graphs for August

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

SW

SW

SW

S

SW

S

S

SW

S

S

S

SW

SW

SW

SW

S

S

SW

S

SW

S

SW

SW

SW

SW

S

SW

S

SW

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

Madrid
Bilbao
Bordeaux
Toulouse
Oviedo
Zaragoza
Salou
Xixón
Burgos

Cities with similar weather in August

Vancouver
Santa Cruz de Tenerife
Seattle
Las Palmas de Gran Canaria
Lima
Port Louis
San Jose
Fuerteventura
Lanzarote

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

August in San Sebastian is the warmest month of the year. In August, the weather in San Sebastian is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, San Sebastian has 13 rainy, 10 sunny, and 8 partly cloudy days in August. The rains are usually moderate.

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