Current sea water temperature:
+37.2°F
| Minimum sea water temperature in June: | 51.4°F |
| Maximum sea water temperature in June: | 35.1°F |
| Average sea water temperature in June: | 40.1°F |
| more information | |
14 days
forecast
forecast
| Grand Marais |
monthly
weather
weather
| Grand Marais |
Sea water temperature for the last 10 days:
| June 8 | 37.2°F | June 3 | 37.9°F |
| June 7 | 35.6°F | June 1 | 37.0°F |
| June 6 | 35.6°F | May 31 | 37.0°F |
| June 5 | 36.7°F | May 30 | 37.6°F |
| June 4 | 37.8°F | May 29 | 35.6°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
June
June
| 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: 14:28
June 08, monday
1500
61°F
SE
1 mph
1 mph
1800
61°F
W
4 mph
4 mph
2100
57°F
W
4 mph
4 mph
June 09, tuesday
0000
55°F
SW
4 mph
4 mph
0300
55°F
SW
5 mph
5 mph
0600
55°F
SW
5 mph
5 mph
0900
55°F
W
6 mph
6 mph
1200
57°F
W
7 mph
7 mph
