Measurements:
°C
°F
CURRENT WEATHER
06:30
Juneau
38°F
SW 3 mph
Feels like: 36°F
Precip: 21%
World Resorts USA Juneau Weather

7 Day Weather Forecast

09.15
tue
DAY
42°F
NE 2 mph
precip
36%
NIGHT
40°F
N 5 mph
precip
54%
09.16
wed
DAY
40°F
N 6 mph
precip
76%
NIGHT
36°F
NW 2 mph
precip
44%
09.17
thu
DAY
38°F
SW 3 mph
precip
26%
NIGHT
36°F
SW 7 mph
precip
27%
09.18
fri
DAY
38°F
W 7 mph
precip
88%
NIGHT
42°F
NW 4 mph
precip
90%
09.19
sat
DAY
38°F
NW 4 mph
precip
47%
NIGHT
38°F
N 6 mph
precip
74%
09.20
sun
DAY
36°F
NW 5 mph
precip
91%
NIGHT
34°F
W 4 mph
precip
80%
09.21
mon
DAY
34°F
NW 4 mph
precip
78%
NIGHT
34°F
NW 4 mph
precip
51%

Juneau Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Juneau was 11.6°F. The maximum and minimum values were 10.9°F and 12.4°F respectively.

Juneau on the Weather Map

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
more details