Measurements:
°C
°F
Juneau
44°F
W 4 mph
Feels like: 42°F
Precip: 32%
World Resorts USA Juneau Weather

Juneau Sea Water Temperature

Current Sea Water Temperature:
+53.8°F
Maximum Sea Water Temperature in July: 61.0°F
Minimum Sea Water Temperature in July: 52.4°F
Average water temperature in July: 56.7°F

Sea Water Temperature for the Last 10 Days:

July 15 53.8°F July 10 53.8°F
July 14 54.0°F July 09 53.2°F
July 13 53.6°F July 08 52.4°F
July 12 54.2°F July 07 53.2°F
July 11 53.8°F July 06 54.0°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: 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 July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Juneau was 53.9°F. The maximum and minimum values were 52.4°F and 55.0°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:
July 58.1 °F
August 58.0 °F
June 54.4 °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
Boston +92
Chicago +86
Hawaii +80
Houston +80
Las Vegas +120
Los Angeles +106
Maui +76
Miami +96
Myrtle Beach +96
New York +110
San Diego +96
San Francisco +76
Santa Monica +84
Sarasota +102
Tampa +100
24 Hours Weather Forecast
Juneau
Local time: 11:11
15 jul, wednesday
1200 44°F
W
4 mph
1500 50°F
W
2 mph
1800 46°F
W
1 mph
2100 44°F
SE
0 mph
16 jul, thursday
0000 42°F
NE
1 mph
0300 44°F
NE
1 mph
0600 44°F
SE
1 mph
0900 50°F
S
2 mph