Measurements:
°C
°F
Juneau
40°F
S 3 mph
Feels like: 38°F
Precip: 30%
World Resorts USA Juneau Weather May Weather in Juneau

Juneau Weather: May

Average Day Temperature: 47.4°F
Average Night Temperature: 41.4°F
Sea Water Temperature: 45.4°F
Number of Sunny Days: 5 days
Sunshine Hours: 15.8 - 17.8 hours
Number of Rainy Days: 6 days
Precipitation Totals: 2.6 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 51°F. The lowest night temperature was 24°F. The average values for day and night temperatures during May were 44.0°F и 34.8°F respectivly.

Juneau Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Juneau was 43.7°F. The maximum and minimum values were 40.6°F and 45.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are gloomy but you can also expect sunny days.

Precipitation Totals in May, in

Precipitation total in May for Juneau is 2.6 in.

Wind Speed in May, mph

The average wind speed in May is 4.3 mph. It makes May one of the most windless months of the year for Juneau.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Juneau in May is 5.0 hours.

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 54.9 °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
Chicago +66
Hawaii +80
Honolulu +80
Houston +82
Las Vegas +96
Los Angeles +66
Maui +74
Miami +80
Miami Beach +88
Myrtle Beach +78
New York +70
San Diego +68
San Francisco +58
Sarasota +84
Tampa +84
24 Hours Weather Forecast
Juneau
Local time: 20:11
24 jun, wednesday
2100 40°F
S
3 mph
25 jun, thursday
0000 38°F
S
2 mph
0300 38°F
SW
1 mph
0600 44°F
NW
1 mph
0900 48°F
W
4 mph
1200 48°F
NW
4 mph
1500 50°F
W
2 mph
1800 52°F
W
1 mph