Measurements:
°C
°F
CURRENT WEATHER
01:49
San Sebastian
54°F
NE 3 mph
Feels like: 54°F
Precip: 100%
World Resorts Spain San Sebastian Weather

7 Day Weather Forecast

04.20
mon
DAY
70°F
S 3 mph
precip
0%
NIGHT
54°F
NE 3 mph
precip
100%
04.21
tue
DAY
76°F
W 4 mph
precip
0%
NIGHT
58°F
NW 12 mph
precip
100%
04.22
wed
DAY
70°F
SE 7 mph
precip
0%
NIGHT
54°F
N 3 mph
precip
0%
04.23
thu
DAY
70°F
S 3 mph
precip
0%
NIGHT
56°F
NE 4 mph
precip
79%
04.24
fri
DAY
62°F
SE 4 mph
precip
0%
NIGHT
58°F
E 6 mph
precip
73%
04.25
sat
DAY
60°F
SE 7 mph
precip
59%
NIGHT
52°F
SE 5 mph
precip
49%
04.26
sun
DAY
58°F
SE 6 mph
precip
29%
NIGHT
48°F
N 4 mph
precip
0%

San Sebastian Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for San Sebastian was 14.0°F. The maximum and minimum values were 13.0°F and 15.2°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 77.5 °F
September 76.1 °F
Warmest sea temperature:
August 75.2 °F
July 73.6 °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
more details