Current sea water temperature:
+32.9°F
| Minimum sea water temperature in February: | 35.1°F |
| Maximum sea water temperature in February: | 32.0°F |
| Average sea water temperature in February: | 33.2°F |
| more information | |
14 days
forecast
forecast
| Duluth |
monthly
weather
weather
| Duluth |
Sea water temperature for the last 10 days:
| February 5 | 32.9°F | January 31 | 33.1°F |
| February 4 | 32.9°F | January 30 | 32.9°F |
| February 3 | 32.9°F | January 29 | 33.1°F |
| February 2 | 32.9°F | January 28 | 33.3°F |
| February 1 | 32.9°F | January 27 | 33.3°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.5°F. The highest and lowest sea temperatures during the month were 71.1°F and 62.6°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 63.4°F. The highest and lowest sea temperatures during the month were 71.2°F and 58.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 60.7°F. The highest and lowest sea temperatures during the month were 65.1°F and 58.3°F.
current
weather
weather
| Duluth |
weather in
February
February
| Duluth |
Best time for vacation in Duluth
Duluth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Duluth
Local time: 19:55
February 05, thursday
2100

32°F
E
6 mph
6 mph
February 06, friday
0000

32°F
SE
6 mph
6 mph
0300

32°F
SE
12 mph
12 mph
0600

28°F
S
11 mph
11 mph
0900

21°F
S
11 mph
11 mph
1200

19°F
S
12 mph
12 mph
1500

23°F
S
11 mph
11 mph
1800

19°F
S
7 mph
7 mph



























