Current sea water temperature:
+43.7°F
| Minimum sea water temperature in December: | 45.7°F |
| Maximum sea water temperature in December: | 42.1°F |
| Average sea water temperature in December: | 44.0°F |
| more information | |
14 days
forecast
forecast
| Ketchikan |
monthly
weather
weather
| Ketchikan |
Sea water temperature for the last 10 days:
| December 29 | 43.7°F | December 24 | 43.5°F |
| December 28 | 43.7°F | December 23 | 43.7°F |
| December 27 | 43.9°F | December 22 | 44.1°F |
| December 26 | 43.2°F | December 21 | 44.1°F |
| December 25 | 43.5°F | December 20 | 44.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Ketchikan?
Based on the data about daily sea water temperature for the last three years the warmest sea in Ketchikan was noticed in August, July and September.
Monthly Sea Temperatures in Ketchikan, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 59.5°F. The highest and lowest sea temperatures during the month were 61.5°F and 57.7°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 57.5°F. The highest and lowest sea temperatures during the month were 61.3°F and 55.4°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 57.1°F. The highest and lowest sea temperatures during the month were 63.1°F and 52.9°F.
current
weather
weather
| Ketchikan |
weather in
January
January
| Ketchikan |
Best time for vacation in Ketchikan
Ketchikan on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Ketchikan
Local time: 19:34
December 29, monday
2100
45°F
NW
10 mph
10 mph
December 30, tuesday
0000
43°F
NW
10 mph
10 mph
0300
43°F
NW
13 mph
13 mph
0600
43°F
NW
11 mph
11 mph
0900
43°F
NW
17 mph
17 mph
1200
43°F
NW
20 mph
20 mph
1500
43°F
NW
17 mph
17 mph
1800
43°F
NW
17 mph
17 mph
