Measurements:
°C
°F
Whidbey Island
54°F
NE 2 mph
Feels like: 56°F
Precip: 29%
World Resorts USA Whidbey Island Weather

Whidbey Island Sea Water Temperature

Current Sea Water Temperature:
+57.2°F
Maximum Sea Water Temperature in September: 62.6°F
Minimum Sea Water Temperature in September: 55.2°F
Average water temperature in September: 58.6°F

Sea Water Temperature for the Last 10 Days:

September 15 57.2°F September 10 59.8°F
September 14 57.6°F September 09 59.2°F
September 13 58.4°F September 08 60.0°F
September 12 58.8°F September 07 60.4°F
September 11 59.8°F September 06 59.8°F

When is the Warmest Sea for Whidbey Island?

According to our data for the last three years for Whidbey Island 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: 2026 2025 2024

The average sea surface temperature in August 2026 for Whidbey Island was 60.8°F. The maximum and minimum values were 58.0°F and 63.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Whidbey Island was 59.1°F. The maximum and minimum values were 55.8°F and 63.8°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Whidbey Island was 59.3°F. The maximum and minimum values were 57.2°F and 60.4°F respectively.

Best Time to Visit Whidbey Island
The most sunny months:
July 19 days
August 16 days
September 13 days
The most warm months:
August 69.6 °F
July 68.9 °F
September 64.7 °F
Warmest sea temperature:
August 60.8 °F
July 59.7 °F
September 58.5 °F
The most cold months:
December 42.3 °F
January 42.4 °F
February 43.0 °F
The most rainy months:
November 4 days
January 4 days
April 3 days
The most windy months:
December 7 mph
January 7 mph
November 7 mph

Whidbey Island on the Weather Map

USA Resorts:
NAME
Boston +64
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +74
Maui +66
Miami +92
Myrtle Beach +86
New York +72
Panama City Beach +90
San Diego +72
San Francisco +60
Santa Monica +72
Sarasota +94
Washington +76
24 Hours Weather Forecast
Whidbey Island
Local time: 07:36
15 sep, tuesday
0900 54°F
NE
2 mph
1200 56°F
SE
4 mph
1500 56°F
S
7 mph
1800 58°F
SE
8 mph
2100 56°F
SE
4 mph
16 sep, wednesday
0000 56°F
S
6 mph
0300 54°F
S
5 mph
0600 54°F
S
5 mph