Measurements:
°C
°F
Bilbao
68°F
S 3 mph
Feels like: 68°F
Precip: 25%
World Resorts Spain Bilbao Weather

Bilbao Sea Water Temperature

Current Sea Water Temperature:
+77.0°F
Maximum Sea Water Temperature in August: 77.0°F
Minimum Sea Water Temperature in August: 70.2°F
Average water temperature in August: 73.8°F

Sea Water Temperature for the Last 10 Days:

August 05 77.0°F July 31 76.6°F
August 04 77.0°F July 30 75.8°F
August 03 76.2°F July 29 76.4°F
August 02 76.2°F July 28 76.2°F
August 01 76.4°F July 27 75.6°F

When is the Warmest Sea for Bilbao?

According to our data for the last three years for Bilbao the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Bilbao was 74.3°F. The maximum and minimum values were 73.4°F and 75.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Bilbao was 75.8°F. The maximum and minimum values were 74.4°F and 77.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Bilbao was 71.6°F. The maximum and minimum values were 69.2°F and 73.4°F respectively.

Best Time to Visit Bilbao
The most sunny months:
October 15 days
September 15 days
August 15 days
The most warm months:
August 81.4 °F
July 79.5 °F
September 77.6 °F
Warmest sea temperature:
August 73.8 °F
July 72.1 °F
September 71.3 °F
The most cold months:
January 52.8 °F
February 55.1 °F
December 56.2 °F
The most rainy months:
November 7 days
January 7 days
December 6 days
The most windy months:
February 8 mph
November 7 mph
December 7 mph

Bilbao on the Weather Map

24 Hours Weather Forecast
Bilbao
Local time: 22:20
06 aug, thursday
0000 68°F
S
2 mph
0300 66°F
S
2 mph
0600 66°F
S
2 mph
0900 66°F
S
1 mph
1200 68°F
S
3 mph
1500 70°F
SW
4 mph
1800 72°F
S
6 mph
2100 68°F
S
4 mph