Measurements:
°C
°F
Bilbao
48°F
SE 2 mph
Feels like: 48°F
Precip: 100%
World Resorts Spain Bilbao Weather

Bilbao Sea Water Temperature

Current Sea Water Temperature:
+55.2°F
Maximum Sea Water Temperature in March: 57.4°F
Minimum Sea Water Temperature in March: 52.6°F
Average water temperature in March: 55.0°F

Sea Water Temperature for the Last 10 Days:

March 09 55.2°F March 04 55.0°F
March 08 55.4°F March 03 55.2°F
March 07 54.8°F March 02 55.4°F
March 06 54.6°F March 01 54.8°F
March 05 54.4°F February 28 54.8°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: 2025 2024 2023

The average sea surface temperature in July 2025 for Bilbao was 74.0°F. The maximum and minimum values were 70.8°F and 76.0°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 79.2 °F
September 77.6 °F
Warmest sea temperature:
August 73.8 °F
July 71.9 °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: 02:08
10 mar, tuesday
0300 48°F
SE
2 mph
0600 46°F
E
1 mph
0900 48°F
E
1 mph
1200 50°F
SW
1 mph
1500 56°F
SW
3 mph
1800 52°F
S
3 mph
2100 48°F
SW
0 mph
11 mar, wednesday
0000 46°F
N
3 mph