Current sea water temperature:
+51.3°F
| Minimum sea water temperature in October: | 65.7°F |
| Maximum sea water temperature in October: | 43.0°F |
| Average sea water temperature in October: | 55.0°F |
| more information | |
14 days
forecast
forecast
| Duluth |
monthly
weather
weather
| Duluth |
Sea water temperature for the last 10 days:
| October 28 | 51.3°F | October 23 | 53.2°F |
| October 27 | 51.8°F | October 22 | 52.7°F |
| October 26 | 52.3°F | October 21 | 52.7°F |
| October 25 | 52.7°F | October 20 | 53.4°F |
| October 24 | 52.5°F | October 19 | 54.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Duluth?
Based on the data about daily sea water temperature for the last three years the warmest sea in Duluth was noticed in August, July and September.
Monthly Sea Temperatures in Duluth, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 64.9°F. The highest and lowest sea temperatures during the month were 69.4°F and 60.4°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 64.4°F. The highest and lowest sea temperatures during the month were 73.2°F and 54.5°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 62.3°F. The highest and lowest sea temperatures during the month were 67.8°F and 57.9°F.
current
weather
weather
| Duluth |
weather in
November
November
| Duluth |
Best time for vacation in Duluth
Duluth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Duluth
Local time: 11:29
October 29, thursday
1200
46°F
E
14 mph
14 mph
1500
50°F
E
13 mph
13 mph
1800
46°F
SE
8 mph
8 mph
2100
43°F
E
5 mph
5 mph
October 30, friday
0000
39°F
E
4 mph
4 mph
0300
39°F
E
3 mph
3 mph
0600
37°F
E
3 mph
3 mph
0900
39°F
NE
2 mph
2 mph
