Measurements:
°C
°F
Washington
66°F
SW 4 mph
Feels like: 66°F
Precip: 3%
World Resorts USA Washington Weather

Washington Sea Water Temperature

Current Sea Water Temperature:
+84.2°F
Maximum Sea Water Temperature in September: 89.4°F
Minimum Sea Water Temperature in September: 68.6°F
Average water temperature in September: 77.8°F

Sea Water Temperature for the Last 10 Days:

September 15 84.2°F September 10 84.8°F
September 14 84.8°F September 09 84.4°F
September 13 84.0°F September 08 85.2°F
September 12 84.6°F September 07 86.0°F
September 11 83.4°F September 06 86.6°F

When is the Warmest Sea for Washington?

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

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Washington was 87.2°F. The maximum and minimum values were 82.6°F and 92.2°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Washington was 86.4°F. The maximum and minimum values were 83.4°F and 89.4°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Washington was 80.7°F. The maximum and minimum values were 72.2°F and 87.6°F respectively.

Best Time to Visit Washington
The most sunny months:
November 16 days
June 15 days
October 15 days
The most warm months:
July 93.6 °F
August 90.4 °F
June 87.0 °F
Warmest sea temperature:
July 84.9 °F
August 83.4 °F
June 78.4 °F
The most cold months:
January 38.3 °F
February 43.1 °F
December 45.4 °F
The most rainy months:
August 5 days
May 5 days
June 5 days
The most windy months:
April 9 mph
March 9 mph
February 8 mph

Washington on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +72
Sarasota +86
Washington +66
24 Hours Weather Forecast
Washington
Local time: 09:00
15 sep, tuesday
1200 76°F
NW
6 mph
1500 82°F
NW
6 mph
1800 80°F
NW
6 mph
2100 72°F
NW
4 mph
16 sep, wednesday
0000 68°F
NW
6 mph
0300 66°F
N
3 mph
0600 64°F
N
3 mph
0900 70°F
N
5 mph