Current sea water temperature:
+46.4°F
| Minimum sea water temperature in December: | 48.4°F |
| Maximum sea water temperature in December: | 41.0°F |
| Average sea water temperature in December: | 44.7°F |
| more information | |
14 days
forecast
forecast
| Mount Desert Island |
monthly
weather
weather
| Mount Desert Island |
Sea water temperature for the last 10 days:
| December 4 | 46.4°F | November 29 | 47.1°F |
| December 3 | 46.4°F | November 28 | 47.5°F |
| December 2 | 46.0°F | November 27 | 47.7°F |
| December 1 | 46.6°F | November 26 | 47.3°F |
| November 30 | 47.3°F | November 25 | 47.8°F |
Monthly sea water temperature, °F
When is the warmest sea in Mount Desert Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Mount Desert Island was noticed in August, July and September.
Monthly Sea Temperatures in Mount Desert Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 60.2°F. The highest and lowest sea temperatures during the month were 63.0°F and 57.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 58.2°F. The highest and lowest sea temperatures during the month were 60.6°F and 54.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 58.6°F. The highest and lowest sea temperatures during the month were 60.6°F and 56.7°F.
current
weather
weather
| Mount Desert Island |
weather in
December
December
| Mount Desert Island |
Best time for vacation in Mount Desert Island
Mount Desert Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Mount Desert Island
Local time: 23:46
December 05, friday
0000
9°F
SE
21 mph
21 mph
0300
5°F
SE
17 mph
17 mph
0600
3°F
SE
14 mph
14 mph
0900
9°F
SE
12 mph
12 mph
1200
18°F
E
11 mph
11 mph
1500
23°F
E
10 mph
10 mph
1800
27°F
E
6 mph
6 mph
2100
25°F
E
7 mph
7 mph
