Measurements:
°C
°F
Juneau
20°F
SW 6 mph
Feels like: 12°F
Precip: 62%
World Resorts USA Juneau Weather

Juneau Sea Water Temperature

Current Sea Water Temperature:
+35.8°F
Maximum Sea Water Temperature in April: 46.2°F
Minimum Sea Water Temperature in April: 35.4°F
Average water temperature in April: 39.5°F

Sea Water Temperature for the Last 10 Days:

April 03 35.8°F March 29 35.0°F
April 02 35.8°F March 28 35.4°F
April 01 35.4°F March 27 35.4°F
March 31 34.8°F March 26 35.2°F
March 30 34.4°F March 25 35.8°F

When is the Warmest Sea for Juneau?

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

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Juneau was 54.7°F. The maximum and minimum values were 52.6°F and 57.2°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Juneau was 56.7°F. The maximum and minimum values were 54.8°F and 58.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Juneau was 53.8°F. The maximum and minimum values were 49.2°F and 59.2°F respectively.

Best Time to Visit Juneau
The most sunny months:
May 6 days
April 6 days
March 5 days
The most warm months:
July 58.1 °F
August 58.0 °F
June 54.9 °F
Warmest sea temperature:
July 57.0 °F
August 56.8 °F
September 52.0 °F
The most cold months:
December 23.9 °F
January 26.3 °F
February 28.1 °F
The most rainy months:
October 12 days
September 10 days
January 9 days
The most windy months:
November 7 mph
December 7 mph
January 7 mph

Juneau on the Weather Map

USA Resorts:
NAME
Chicago +46
Hawaii +74
Honolulu +74
Houston +74
Las Vegas +54
Los Angeles +56
Maui +66
Miami +74
Miami Beach +78
New York +40
San Diego +58
San Francisco +50
Sarasota +72
Tampa +72
Washington +48
24 Hours Weather Forecast
Juneau
Local time: 01:48
03 apr, friday
0300 20°F
SW
6 mph
0600 22°F
SW
6 mph
0900 32°F
W
4 mph
1200 32°F
W
3 mph
1500 34°F
NW
4 mph
1800 34°F
NW
4 mph
2100 32°F
W
4 mph
04 apr, saturday
0000 30°F
W
3 mph