World Resorts Spain San Sebastian Weather

San Sebastian sea water temperature

Current sea water temperature:
+53.8°F
Minimum sea water temperature in February: 56.7°F
Maximum sea water temperature in February: 51.3°F
Average sea water temperature in February: 54.1°F

Sea water temperature for the last 10 days:

February 23 53.8°F February 18 54.1°F
February 22 53.8°F February 17 54.1°F
February 21 53.2°F February 16 54.1°F
February 20 54.0°F February 15 54.3°F
February 19 54.0°F February 14 54.7°F

When is the warmest sea in San Sebastian?

Based on the data about daily sea water temperature for the last three years the warmest sea in San Sebastian was noticed in August, July and September.

Monthly Sea Temperatures in San Sebastian, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 73.8°F. The highest and lowest sea temperatures during the month were 75.9°F and 72.1°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 73.7°F. The highest and lowest sea temperatures during the month were 75.0°F and 72.3°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 70.2°F. The highest and lowest sea temperatures during the month were 72.0°F and 68.2°F.

Best time for vacation in San Sebastian

Sunniest months:
August 16 days
September 15 days
October 14 days
Warmest months:
August 76.7 °F
July 74.7 °F
September 73.5 °F
Warmest sea temp:
August 72.6 °F
July 71.3 °F
September 70.3 °F
Coldest months:
January 51.5 °F
February 53.5 °F
December 54.6 °F
Rainiest months:
November 9 days
January 8 days
February 7 days
Windiest months:
February 8.7 mph
November 8.7 mph
January 8.6 mph

San Sebastian on a weather map

San Sebastian
+63°F
SW 5 mph
Feels like: +63°F
Precip.: 0%
Places in Spain:
Name
°F
+64°F
+63°F
+64°F
+72°F
+63°F
+70°F
+63°F
+75°F
+66°F
+68°F
+72°F
+64°F
+72°F
24 Hours Forecast
San Sebastian
Local time: 15:58
February 23, monday
1800
54°F
W
4 mph
2100
50°F
NW
5 mph
February 24, tuesday
0000
48°F
NW
6 mph
0300
48°F
N
7 mph
0600
48°F
N
8 mph
0900
48°F
N
9 mph
1200
64°F
N
7 mph
1500
68°F
N
9 mph
Units of measurement: °C / °F