Current sea water temperature:
+57.4°F
| Minimum sea water temperature in September: | 64.9°F |
| Maximum sea water temperature in September: | 55.0°F |
| Average sea water temperature in September: | 58.6°F |
| more information | |
14 days
forecast
forecast
| Mount Desert Island |
monthly
weather
weather
| Mount Desert Island |
Sea water temperature for the last 10 days:
| September 14 | 57.4°F | September 9 | 57.4°F |
| September 13 | 56.7°F | September 8 | 57.6°F |
| September 12 | 57.4°F | September 7 | 57.9°F |
| September 11 | 57.7°F | September 6 | 58.8°F |
| September 10 | 57.0°F | September 5 | 59.2°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 61.1°F. The highest and lowest sea temperatures during the month were 64.2°F and 58.6°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 58.1°F. The highest and lowest sea temperatures during the month were 61.7°F and 54.7°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
September
September
| 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: 16:42
September 14, monday
1800
61°F
SE
13 mph
13 mph
2100
54°F
SE
9 mph
9 mph
September 15, tuesday
0000
48°F
SE
5 mph
5 mph
0300
46°F
S
5 mph
5 mph
0600
45°F
SE
4 mph
4 mph
0900
55°F
S
4 mph
4 mph
1200
64°F
W
1 mph
1 mph
1500
63°F
N
9 mph
9 mph
