Measurements:
°C
°F
Bellingham
52°F
N 9 mph
Feels like: 48°F
Precip: 88%
World Resorts USA Bellingham Weather

Bellingham Sea Water Temperature

Current Sea Water Temperature:
+55.4°F
Maximum Sea Water Temperature in May: 58.8°F
Minimum Sea Water Temperature in May: 49.6°F
Average water temperature in May: 53.8°F

Sea Water Temperature for the Last 10 Days:

May 14 55.4°F May 09 55.4°F
May 13 56.0°F May 08 55.4°F
May 12 55.6°F May 07 57.4°F
May 11 54.8°F May 06 56.6°F
May 10 55.8°F May 05 55.2°F

When is the Warmest Sea for Bellingham?

According to our data for the last three years for Bellingham 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 Bellingham was 62.3°F. The maximum and minimum values were 59.8°F and 65.0°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Bellingham was 61.7°F. The maximum and minimum values were 57.4°F and 66.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Bellingham was 60.9°F. The maximum and minimum values were 55.8°F and 65.4°F respectively.

Best Time to Visit Bellingham
The most sunny months:
July 21 days
August 18 days
June 11 days
The most warm months:
August 74.7 °F
July 74.1 °F
September 69.3 °F
Warmest sea temperature:
July 63.4 °F
August 63.4 °F
September 59.6 °F
The most cold months:
December 40.7 °F
January 41.1 °F
February 42.0 °F
The most rainy months:
November 7 days
January 6 days
October 5 days
The most windy months:
December 5 mph
February 4 mph
March 4 mph

Bellingham on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +56
Hawaii +76
Honolulu +76
Houston +94
Las Vegas +88
Los Angeles +66
Maui +70
Miami +94
Miami Beach +90
New York +68
San Diego +66
San Francisco +62
Sarasota +94
Tampa +94
24 Hours Weather Forecast
Bellingham
Local time: 09:14
14 may, thursday
1200 54°F
N
9 mph
1500 60°F
N
7 mph
1800 56°F
NE
8 mph
2100 50°F
N
6 mph
15 may, friday
0000 48°F
NE
9 mph
0300 46°F
N
10 mph
0600 46°F
NE
8 mph
0900 46°F
NE
8 mph