Measurements:
°C
°F
Juneau
34°F
NW 3 mph
Feels like: 32°F
Precip: 100%
World Resorts USA Juneau Weather

Juneau Sea Water Temperature

Current Sea Water Temperature:
+40.8°F
Maximum Sea Water Temperature in December: 41.6°F
Minimum Sea Water Temperature in December: 36.6°F
Average water temperature in December: 39.4°F

Sea Water Temperature for the Last 10 Days:

December 04 40.8°F November 29 40.6°F
December 03 40.6°F November 28 40.4°F
December 02 40.4°F November 27 40.6°F
December 01 40.2°F November 26 40.8°F
November 30 40.0°F November 25 41.4°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
March 6 days
April 6 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:
January 26.9 °F
December 27.9 °F
February 28.5 °F
The most rainy months:
October 12 days
September 10 days
January 10 days
The most windy months:
January 7 mph
November 7 mph
December 7 mph

Juneau on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Juneau
Local time: 21:43
05 dec, friday
0000 32°F
NW
2 mph
0300 30°F
NW
2 mph
0600 30°F
NW
2 mph
0900 30°F
W
2 mph
1200 30°F
SW
1 mph
1500 30°F
N
1 mph
1800 32°F
N
2 mph
2100 32°F
NW
4 mph