Measurements:
°C
°F
Girdwood
42°F
W 9 mph
Feels like: 36°F
Precip: 26%
World Resorts USA Girdwood Weather

Girdwood Sea Water Temperature

Current Sea Water Temperature:
+49.0°F
Maximum Sea Water Temperature in September: 56.8°F
Minimum Sea Water Temperature in September: 47.2°F
Average water temperature in September: 51.6°F

Sea Water Temperature for the Last 10 Days:

September 15 49.0°F September 10 49.8°F
September 14 48.6°F September 09 50.6°F
September 13 48.6°F September 08 50.8°F
September 12 48.0°F September 07 50.6°F
September 11 50.0°F September 06 50.2°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 55.7°F. The maximum and minimum values were 52.4°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: 2026 2025 2024

The average sea surface temperature in September 2026 for Girdwood was 49.8°F. The maximum and minimum values were 48.0°F and 51.8°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 58.4 °F
June 58.0 °F
Warmest sea temperature:
August 55.8 °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 4 days
The most windy months:
January 6 mph
February 6 mph
December 6 mph

Girdwood 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 +88
New York +72
Panama City Beach +90
San Diego +72
San Francisco +60
Santa Monica +72
Sarasota +94
Washington +76
24 Hours Weather Forecast
Girdwood
Local time: 07:16
15 sep, tuesday
0900 42°F
W
10 mph
1200 44°F
NW
14 mph
1500 42°F
NW
11 mph
1800 42°F
NW
12 mph
2100 42°F
NW
6 mph
16 sep, wednesday
0000 42°F
NE
1 mph
0300 40°F
SE
4 mph
0600 38°F
SE
4 mph