Current sea water temperature:
+41.4°F
| Minimum sea water temperature in March: | 45.1°F |
| Maximum sea water temperature in March: | 39.6°F |
| Average sea water temperature in March: | 42.0°F |
| more information | |
14 days
forecast
forecast
| Ketchikan |
monthly
weather
weather
| Ketchikan |
Sea water temperature for the last 10 days:
| March 18 | 41.4°F | March 13 | 41.4°F |
| March 17 | 41.9°F | March 12 | 41.5°F |
| March 16 | 41.5°F | March 11 | 41.9°F |
| March 15 | 41.0°F | March 10 | 41.9°F |
| March 14 | 41.2°F | March 9 | 41.7°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
March
March
| Ketchikan |
Best time for vacation in Ketchikan
Ketchikan on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Ketchikan
Local time: 13:35
March 18, wednesday
1500
39°F
N
12 mph
12 mph
1800
37°F
N
11 mph
11 mph
2100
36°F
N
9 mph
9 mph
March 19, thursday
0000
32°F
NE
11 mph
11 mph
0300
32°F
NE
8 mph
8 mph
0600
32°F
N
8 mph
8 mph
0900
34°F
N
7 mph
7 mph
1200
36°F
NE
11 mph
11 mph
