Measurements:
°C
°F
Girdwood
46°F
NW 11 mph
Feels like: 42°F
Precip: 73%
World Resorts USA Girdwood Weather

Girdwood Sea Water Temperature

Current Sea Water Temperature:
+57.2°F
Maximum Sea Water Temperature in August: 60.0°F
Minimum Sea Water Temperature in August: 49.2°F
Average water temperature in August: 56.0°F

Sea Water Temperature for the Last 10 Days:

August 25 57.2°F August 20 57.2°F
August 24 58.2°F August 19 56.6°F
August 23 58.0°F August 18 55.8°F
August 22 57.8°F August 17 55.8°F
August 21 57.6°F August 16 55.4°F

When is the Warmest Sea for Girdwood?

According to our data for the last three years for Girdwood 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 Girdwood was 55.8°F. The maximum and minimum values were 53.0°F and 58.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Girdwood was 53.9°F. The maximum and minimum values were 50.6°F and 56.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Girdwood was 51.6°F. The maximum and minimum values were 49.4°F and 54.0°F respectively.

Best Time to Visit Girdwood
The most sunny months:
January 7 days
November 7 days
December 7 days
The most warm months:
July 60.8 °F
August 59.0 °F
June 58.0 °F
Warmest sea temperature:
August 55.9 °F
July 55.2 °F
September 51.8 °F
The most cold months:
December 11.5 °F
January 14.0 °F
November 17.2 °F
The most rainy months:
September 7 days
October 5 days
August 5 days
The most windy months:
January 6 mph
February 6 mph
December 6 mph

Girdwood on the Weather Map

USA Resorts:
NAME
Boston +80
Chicago +80
Hawaii +84
Houston +106
Las Vegas +116
Los Angeles +96
Maui +70
Miami +92
Myrtle Beach +84
New York +82
San Diego +96
San Francisco +64
Santa Monica +86
Sarasota +92
Washington +84
24 Hours Weather Forecast
Girdwood
Local time: 13:36
25 aug, tuesday
1500 46°F
NW
11 mph
1800 46°F
NW
9 mph
2100 44°F
NW
7 mph
26 aug, wednesday
0000 44°F
S
5 mph
0300 44°F
S
5 mph
0600 42°F
S
6 mph
0900 44°F
SE
6 mph
1200 50°F
E
7 mph