Measurements:
°C
°F
CURRENT WEATHER
19:10
San Sebastian
76°F
S 7 mph
Feels like: 80°F
Precip: 7%
World Resorts Spain San Sebastian Weather

7 Day Weather Forecast

08.19
wed
DAY
80°F
S 5 mph
precip
3%
NIGHT
66°F
E 3 mph
precip
39%
08.20
thu
DAY
80°F
S 5 mph
precip
13%
NIGHT
64°F
SE 4 mph
precip
66%
08.21
fri
DAY
70°F
SE 4 mph
precip
23%
NIGHT
58°F
N 3 mph
precip
34%
08.22
sat
DAY
60°F
SW 2 mph
precip
39%
NIGHT
58°F
S 2 mph
precip
36%
08.23
sun
DAY
62°F
W 2 mph
precip
48%
NIGHT
64°F
E 2 mph
precip
43%
08.24
mon
DAY
64°F
SE 4 mph
precip
41%
NIGHT
58°F
N 4 mph
precip
53%
08.25
tue
DAY
76°F
W 2 mph
precip
11%
NIGHT
64°F
NE 5 mph
precip
10%

San Sebastian Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for San Sebastian was 23.9°F. The maximum and minimum values were 23.3°F and 24.6°F respectively.

San Sebastian on the Weather Map

Best Time to Visit San Sebastian
The most sunny months:
August 16 days
September 15 days
October 14 days
The most warm months:
August 79.7 °F
July 77.7 °F
September 76.1 °F
Warmest sea temperature:
August 75.2 °F
July 73.9 °F
September 72.6 °F
The most cold months:
January 51.6 °F
February 54.0 °F
December 55.1 °F
The most rainy months:
November 9 days
January 8 days
February 7 days
The most windy months:
February 9 mph
November 8 mph
January 8 mph
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