Measurements:
°C
°F
Juneau
38°F
N 7 mph
Feels like: 32°F
Precip: 76%
World Resorts USA Juneau Weather

Juneau Sea Water Temperature

Current Sea Water Temperature:
+48.2°F
Maximum Sea Water Temperature in October: 49.8°F
Minimum Sea Water Temperature in October: 41.8°F
Average water temperature in October: 46.3°F

Sea Water Temperature for the Last 10 Days:

October 05 48.2°F September 30 47.8°F
October 04 47.6°F September 29 47.8°F
October 03 47.6°F September 28 47.8°F
October 02 47.6°F September 27 48.0°F
October 01 47.6°F September 26 48.0°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 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 Juneau was 57.5°F. The maximum and minimum values were 54.2°F and 60.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Juneau was 54.7°F. The maximum and minimum values were 52.4°F and 57.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Juneau was 51.6°F. The maximum and minimum values were 47.8°F and 54.8°F respectively.

Best Time to Visit Juneau
The most sunny months:
February 5 days
March 5 days
April 5 days
The most warm months:
July 57.2 °F
August 56.6 °F
June 54.4 °F
Warmest sea temperature:
August 56.9 °F
July 56.6 °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
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Juneau
Local time: 16:26
05 oct, monday
1800 38°F
N
6 mph
2100 36°F
NW
6 mph
06 oct, tuesday
0000 34°F
NW
6 mph
0300 34°F
NW
6 mph
0600 36°F
N
7 mph
0900 36°F
N
8 mph
1200 36°F
N
6 mph
1500 36°F
NE
6 mph