Measurements:
°C
°F
CURRENT WEATHER
15:17
Mount Desert Island
92°F
NE 9 mph
Feels like: 92°F
Precip: 1%
World Resorts USA Mount Desert Island Weather

7 Day Weather Forecast

08.05
wed
DAY
94°F
NE 6 mph
precip
1%
NIGHT
64°F
E 4 mph
precip
10%
08.06
thu
DAY
88°F
N 4 mph
precip
2%
NIGHT
70°F
E 4 mph
precip
6%
08.07
fri
DAY
84°F
NE 6 mph
precip
17%
NIGHT
70°F
E 3 mph
precip
17%
08.08
sat
DAY
78°F
NW 2 mph
precip
31%
NIGHT
64°F
N 3 mph
precip
47%
08.09
sun
DAY
84°F
E 3 mph
precip
4%
NIGHT
66°F
N 3 mph
precip
14%
08.10
mon
DAY
80°F
N 8 mph
precip
5%
NIGHT
70°F
SE 3 mph
precip
33%
08.11
tue
DAY
66°F
S 6 mph
precip
33%
NIGHT
62°F
NE 4 mph
precip
38%

Mount Desert Island Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Mount Desert Island was 15.7°F. The maximum and minimum values were 13.9°F and 17.2°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 62.9 °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