Current sea water temperature:
+32.4°F
| Minimum sea water temperature in February: | 37.6°F |
| Maximum sea water temperature in February: | 32.0°F |
| Average sea water temperature in February: | 34.7°F |
| more information | |
14 days
forecast
forecast
| Grand Marais |
monthly
weather
weather
| Grand Marais |
Sea water temperature for the last 10 days:
| February 26 | 32.4°F | February 21 | 32.2°F |
| February 25 | 32.4°F | February 20 | 32.2°F |
| February 24 | 32.4°F | February 19 | 32.2°F |
| February 23 | 32.0°F | February 18 | 32.2°F |
| February 22 | 32.2°F | February 17 | 32.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Grand Marais?
Based on the data about daily sea water temperature for the last three years the warmest sea in Grand Marais was noticed in August, September and October.
Monthly Sea Temperatures in Grand Marais, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 61.3°F. The highest and lowest sea temperatures during the month were 65.7°F and 55.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 58.5°F. The highest and lowest sea temperatures during the month were 62.8°F and 55.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 53.8°F. The highest and lowest sea temperatures during the month were 60.3°F and 49.6°F.
current
weather
weather
| Grand Marais |
weather in
March
March
| Grand Marais |
Best time for vacation in Grand Marais
Grand Marais on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Grand Marais
Local time: 15:26
February 26, thursday
1800
28°F
SE
7 mph
7 mph
2100
27°F
SE
5 mph
5 mph
February 27, friday
0000
23°F
SE
5 mph
5 mph
0300
25°F
SE
2 mph
2 mph
0600
27°F
NE
6 mph
6 mph
0900
28°F
NE
11 mph
11 mph
1200
37°F
NE
14 mph
14 mph
1500
37°F
E
22 mph
22 mph
