Current sea water temperature:
+50.7°F
| Minimum sea water temperature in May: | 54.0°F |
| Maximum sea water temperature in May: | 44.6°F |
| Average sea water temperature in May: | 49.5°F |
| more information | |
14 days
forecast
forecast
| Ketchikan |
monthly
weather
weather
| Ketchikan |
Sea water temperature for the last 10 days:
| May 25 | 50.7°F | May 20 | 49.6°F |
| May 24 | 50.9°F | May 19 | 49.5°F |
| May 23 | 50.4°F | May 18 | 49.5°F |
| May 22 | 50.0°F | May 17 | 49.6°F |
| May 21 | 49.8°F | May 16 | 49.6°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
May
May
| Ketchikan |
Best time for vacation in Ketchikan
Ketchikan on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Ketchikan
Local time: 17:57
May 25, monday
1800
55°F
SE
5 mph
5 mph
2100
48°F
SE
4 mph
4 mph
May 26, tuesday
0000
46°F
SE
4 mph
4 mph
0300
45°F
SE
5 mph
5 mph
0600
46°F
SE
6 mph
6 mph
0900
52°F
SE
6 mph
6 mph
1200
54°F
E
4 mph
4 mph
1500
55°F
NE
4 mph
4 mph
