Current sea water temperature:
+42.6°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 16 | 42.6°F | December 11 | 44.8°F |
| December 15 | 43.5°F | December 10 | 44.8°F |
| December 14 | 43.7°F | December 9 | 45.3°F |
| December 13 | 43.9°F | December 8 | 45.3°F |
| December 12 | 44.6°F | December 7 | 45.7°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: 15:13
December 16, tuesday
1800
30°F
E
6 mph
6 mph
2100
32°F
NE
9 mph
9 mph
December 17, wednesday
0000
34°F
NE
17 mph
17 mph
0300
36°F
NE
19 mph
19 mph
0600
36°F
NE
21 mph
21 mph
0900
37°F
NE
22 mph
22 mph
1200
39°F
NE
24 mph
24 mph
1500
37°F
NE
22 mph
22 mph
