Current sea water temperature:
+45.0°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 4 | 45.0°F | November 29 | 45.1°F |
| December 3 | 45.0°F | November 28 | 45.3°F |
| December 2 | 45.1°F | November 27 | 45.5°F |
| December 1 | 45.1°F | November 26 | 45.9°F |
| November 30 | 45.1°F | November 25 | 46.0°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
December
December
| Ketchikan |
Best time for vacation in Ketchikan
Ketchikan on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Ketchikan
Local time: 19:42
December 04, thursday
2100
41°F
W
4 mph
4 mph
December 05, friday
0000
41°F
W
4 mph
4 mph
0300
41°F
W
4 mph
4 mph
0600
39°F
W
5 mph
5 mph
0900
39°F
S
6 mph
6 mph
1200
41°F
S
7 mph
7 mph
1500
41°F
S
6 mph
6 mph
1800
36°F
S
4 mph
4 mph
