Measurements:
°C
°F
Juneau
44°F
SW 4 mph
Feels like: 42°F
Precip: 29%
World Resorts USA Juneau Weather

Juneau Sea Water Temperature

Current Sea Water Temperature:
+55.8°F
Maximum Sea Water Temperature in August: 61.8°F
Minimum Sea Water Temperature in August: 54.0°F
Average water temperature in August: 56.9°F

Sea Water Temperature for the Last 10 Days:

August 25 55.8°F August 20 59.0°F
August 24 56.6°F August 19 60.0°F
August 23 57.0°F August 18 60.0°F
August 22 57.2°F August 17 60.2°F
August 21 58.0°F August 16 58.6°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 58.0°F. The maximum and minimum values were 55.8°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: 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:
February 5 days
March 5 days
April 5 days
The most warm months:
August 58.0 °F
July 57.2 °F
June 54.4 °F
Warmest sea temperature:
August 57.0 °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
Boston +80
Chicago +82
Hawaii +84
Houston +108
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
Juneau
Local time: 13:28
25 aug, tuesday
1500 44°F
SW
4 mph
1800 42°F
SW
6 mph
2100 44°F
SW
6 mph
26 aug, wednesday
0000 42°F
SW
6 mph
0300 40°F
SW
5 mph
0600 40°F
S
4 mph
0900 44°F
S
4 mph
1200 46°F
SW
4 mph