Measurements:
°C
°F
CURRENT WEATHER
17:45
Mount Desert Island
74°F
NE 7 mph
Feels like: 80°F
Precip: 7%
World Resorts USA Mount Desert Island Weather

7 Day Weather Forecast

08.25
tue
DAY
80°F
N 8 mph
precip
5%
NIGHT
62°F
SE 4 mph
precip
19%
08.26
wed
DAY
76°F
SE 7 mph
precip
2%
NIGHT
60°F
NE 2 mph
precip
13%
08.27
thu
DAY
74°F
N 9 mph
precip
14%
NIGHT
64°F
N 6 mph
precip
19%
08.28
fri
DAY
70°F
N 11 mph
precip
38%
NIGHT
64°F
SE 2 mph
precip
47%
08.29
sat
DAY
72°F
SE 10 mph
precip
1%
NIGHT
56°F
E 5 mph
precip
28%
08.30
sun
DAY
72°F
N 9 mph
precip
13%
NIGHT
64°F
E 4 mph
precip
15%
08.31
mon
DAY
68°F
W 8 mph
precip
8%
NIGHT
54°F
SE 5 mph
precip
16%

Mount Desert Island Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Mount Desert Island was 16.1°F. The maximum and minimum values were 14.8°F and 17.9°F respectively.

Mount Desert Island on the Weather Map

Best Time to Visit Mount Desert Island
The most sunny months:
October 13 days
September 13 days
November 13 days
The most warm months:
July 75.5 °F
August 73.7 °F
June 69.2 °F
Warmest sea temperature:
August 62.8 °F
July 60.7 °F
September 59.6 °F
The most cold months:
January 26.6 °F
February 27.9 °F
December 33.1 °F
The most rainy months:
December 3 days
October 3 days
April 2 days
The most windy months:
December 11 mph
March 10 mph
February 10 mph
more details