World Resorts USA Juneau Weather

Juneau sea water temperature

Current sea water temperature:
+36.9°F
Minimum sea water temperature in March: 40.8°F
Maximum sea water temperature in March: 36.0°F
Average sea water temperature in March: 38.4°F

Sea water temperature for the last 10 days:

March 18 36.9°F March 13 36.7°F
March 17 36.7°F March 12 37.0°F
March 16 36.1°F March 11 37.4°F
March 15 36.0°F March 10 37.4°F
March 14 36.3°F March 9 37.4°F

When is the warmest sea in Juneau?

Based on the data about daily sea water temperature for the last three years the warmest sea in Juneau was noticed in July, August and September.

Monthly Sea Temperatures in Juneau, °F

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 54.3°F. The highest and lowest sea temperatures during the month were 56.5°F and 52.3°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 56.0°F. The highest and lowest sea temperatures during the month were 57.9°F and 54.3°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 53.4°F. The highest and lowest sea temperatures during the month were 58.3°F and 49.3°F.

Best time for vacation in Juneau

Sunniest months:
May 6 days
March 6 days
April 6 days
Warmest months:
July 57.3 °F
August 57.2 °F
June 54.4 °F
Warmest sea temp:
July 56.3 °F
August 56.1 °F
September 51.8 °F
Coldest months:
December 26.5 °F
January 28.7 °F
February 30.3 °F
Rainiest months:
October 12 days
September 10 days
January 9 days
Windiest months:
November 7.0 mph
December 7.0 mph
January 6.9 mph

Juneau on a weather map

Juneau
+30°F
NE 9 mph
Feels like: +23°F
Precip.: 100%
Places in USA:
Name
°F
+45°F
+75°F
+75°F
+99°F
+93°F
+66°F
+72°F
+72°F
+37°F
+70°F
+86°F
+72°F
+66°F
+73°F
+39°F
24 Hours Forecast
Juneau
Local time: 13:37
March 18, wednesday
1500
30°F
NE
9 mph
1800
28°F
N
4 mph
2100
18°F
W
4 mph
March 19, thursday
0000
27°F
N
7 mph
0300
12°F
NW
5 mph
0600
14°F
NW
4 mph
0900
25°F
N
6 mph
1200
30°F
NW
7 mph
Units of measurement: °C / °F