San Sebastian weather live forecast

Today's maximum temperature in San Sebastian is expected to be 31°C. Select a day from the live weather forecast for San Sebastian, Spain for more weather parameters.

Thursday
24th Sep
31

14

11

5
Friday
25th Sep
23

17

3

5
Saturday
26th Sep
22

17

8

5
Sunday
27th Sep
26

17

5

5
Monday
28th Sep
28

18

4

4

5-day weather forecast updated at 04:01 on Thursday 24th September 2026 GMT

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The 5-day weather forecast for Spain (San Sebastian) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

San Sebastian weather forecast by day

Below are the detailed weather forecasts for San Sebastian for the next 5 days.

San Sebastian weather for Thursday 24th September 2026

Expect clear skies in San Sebastian, Spain with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

31
°C maximum temperature
14
°C minimum temperature
clear skies
11
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from S

San Sebastian weather for Friday 25th September 2026

Expect mostly cloudy with light rain in San Sebastian, Spain with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 15 kph from the north-west.

23
°C maximum temperature
17
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
5
UV index (Moderate)
25
% chance of some rain
<2
mm of rainfall expected
23
°C wind chill
15
kph wind from NW

San Sebastian weather for Saturday 26th September 2026

Expect broken clouds in San Sebastian, Spain with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north.

22
°C maximum temperature
17
°C minimum temperature
broken clouds
8
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
13
kph wind from N

San Sebastian weather for Sunday 27th September 2026

Expect isolated thunderstorms in San Sebastian, Spain with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a light breeze of 8 kph from the north-west.

26
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
5
UV index (Moderate)
37
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
8
kph wind from NW

San Sebastian weather for Monday 28th September 2026

Expect isolated thunderstorms in San Sebastian, Spain with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and little or no wind of 6 kph from the south.