San Sebastian weather live forecast

Today's maximum temperature in San Sebastian is expected to be 26°C. Select a day from the live weather forecast for San Sebastian, Spain for more weather parameters.

Friday
14th Aug
26

22

5

7
Saturday
15th Aug
24

22

3

6
Sunday
16th Aug
25

22

7

6
Monday
17th Aug
25

21

5

7
Tuesday
18th Aug
24

20

4

7

5-day weather forecast updated at 04:01 on Thursday 13th August 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 Friday 14th August 2026

Expect isolated thunderstorms in San Sebastian, Spain with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 13 kph from the north-west.

26
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
25
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
13
kph wind from NW

San Sebastian weather for Saturday 15th August 2026

Expect isolated thunderstorms in San Sebastian, Spain with a maximum temperature of 24°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 15 kph from the north-west.

24
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
6
UV index (High)
68
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
15
kph wind from NW

San Sebastian weather for Sunday 16th August 2026

Expect isolated thunderstorms in San Sebastian, Spain with a maximum temperature of 25°C, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 43% chance of some rain and a light breeze of 11 kph from the north.

25
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
6
UV index (High)
43
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
11
kph wind from N

San Sebastian weather for Monday 17th August 2026

Expect isolated thunderstorms in San Sebastian, Spain with a maximum temperature of 25°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 32% chance of some rain and a light breeze of 12 kph from the north.

25
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
32
% chance of some rain
<2
mm of rainfall expected
25
°C wind chill
12
kph wind from N

San Sebastian weather for Tuesday 18th August 2026

Expect mostly cloudy with light rain in San Sebastian, Spain with a maximum temperature of 24°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 35% chance of some rain and a gentle breeze of 17 kph from the north-west.