Measurements:
°C
°F
CURRENT WEATHER
06:31
Ketchikan
52°F
SE 4 mph
Feels like: 50°F
Precip: 31%
World Resorts USA Ketchikan Weather

7 Day Weather Forecast

09.15
tue
DAY
60°F
SE 5 mph
precip
8%
NIGHT
52°F
S 6 mph
precip
14%
09.16
wed
DAY
60°F
S 6 mph
precip
7%
NIGHT
54°F
S 5 mph
precip
22%
09.17
thu
DAY
60°F
E 2 mph
precip
10%
NIGHT
54°F
W 5 mph
precip
69%
09.18
fri
DAY
54°F
NW 11 mph
precip
80%
NIGHT
52°F
NW 11 mph
precip
78%
09.19
sat
DAY
54°F
NW 11 mph
precip
84%
NIGHT
50°F
N 6 mph
precip
30%
09.20
sun
DAY
52°F
NW 8 mph
precip
65%
NIGHT
52°F
N 11 mph
precip
84%
09.21
mon
DAY
54°F
N 7 mph
precip
27%
NIGHT
48°F
NW 4 mph
precip
35%

Ketchikan Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Ketchikan was 13.9°F. The maximum and minimum values were 13.2°F and 14.5°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 61.8 °F
July 60.4 °F
June 56.5 °F
Warmest sea temperature:
August 61.1 °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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