Measurements:
°C
°F
CURRENT WEATHER
10:22
Ketchikan
60°F
SE 7 mph
Feels like: 58°F
Precip: 10%
World Resorts USA Ketchikan Weather

7 Day Weather Forecast

08.05
wed
DAY
64°F
SE 7 mph
precip
4%
NIGHT
54°F
S 4 mph
precip
14%
08.06
thu
DAY
66°F
E 4 mph
precip
8%
NIGHT
56°F
NW 3 mph
precip
17%
08.07
fri
DAY
60°F
N 3 mph
precip
28%
NIGHT
54°F
W 1 mph
precip
24%
08.08
sat
DAY
64°F
E 4 mph
precip
14%
NIGHT
54°F
S 3 mph
precip
13%
08.09
sun
DAY
66°F
E 3 mph
precip
6%
NIGHT
54°F
NW 3 mph
precip
15%
08.10
mon
DAY
66°F
N 6 mph
precip
10%
NIGHT
58°F
N 5 mph
precip
25%
08.11
tue
DAY
62°F
N 4 mph
precip
27%
NIGHT
56°F
NW 4 mph
precip
26%

Ketchikan Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Ketchikan was 15.3°F. The maximum and minimum values were 14.3°F and 16.4°F respectively.

Ketchikan on the Weather Map

Best Time to Visit Ketchikan
The most sunny months:
August 9 days
July 7 days
April 6 days
The most warm months:
August 61.7 °F
July 60.4 °F
June 56.5 °F
Warmest sea temperature:
August 61.2 °F
July 60.0 °F
September 56.6 °F
The most cold months:
December 34.5 °F
January 34.8 °F
February 35.4 °F
The most rainy months:
November 10 days
January 9 days
October 9 days
The most windy months:
November 12 mph
January 11 mph
December 11 mph
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