World Resorts USA Mount Desert Island Weather

Mount Desert Island 7 Days Forecast

10.08
mon
Day
88°F
NE 8 mph
Precip.
2%
Night
64°F
W 3 mph
Precip.
44%
11.08
tue
Day
77°F
E 5 mph
Precip.
17%
Night
61°F
SE 7 mph
Precip.
8%
12.08
wed
Day
77°F
E 7 mph
Precip.
2%
Night
61°F
NE 5 mph
Precip.
13%
13.08
thu
Day
64°F
N 7 mph
Precip.
67%
Night
59°F
SE 7 mph
Precip.
10%
14.08
fri
Day
68°F
SE 12 mph
Precip.
4%
Night
59°F
E 14 mph
Precip.
19%
15.08
sat
Day
68°F
SE 16 mph
Precip.
8%
Night
59°F
SE 7 mph
Precip.
10%
16.08
sun
Day
72°F
NE 9 mph
Precip.
5%
Night
61°F
N 5 mph
Precip.
10%

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.

Air temperature in Mount Desert Island, °F

Precipitation total in Mount Desert Island, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Mount Desert Island

Sunniest months:
October 13 days
September 13 days
November 13 days
Warmest months:
July 73.0 °F
August 71.3 °F
June 67.2 °F
Warmest sea temp:
August 61.6 °F
July 59.6 °F
September 58.6 °F
Coldest months:
January 28.9 °F
February 30.1 °F
December 34.8 °F
Rainiest months:
December 3 days
October 3 days
April 2 days
Windiest months:
December 10.7 mph
March 10.5 mph
February 10.4 mph

Mount Desert Island on a weather map

Current weather
12:46
Mount Desert Island
+88°F
NE 8 mph
Feels like: +90°F
Precip.: 2%
Places in USA:
Name
°F
Boston
+90°F
Washington
+95°F
Hawaii
+77°F
Las Vegas
+99°F
Los Angeles
+77°F
Miami
+91°F
Maui
+72°F
Myrtle Beach
+93°F
New York
+90°F
San Diego
+73°F
San Francisco
+61°F
Santa Monica
+73°F
Sarasota
+91°F
Houston
+95°F
Chicago
+72°F
all places
24 Hours Forecast
Mount Desert Island
Local time: 12:46
August 10, monday
1500
88°F
N
11 mph
1800
72°F
N
7 mph
2100
66°F
NE
4 mph
August 11, tuesday
0000
64°F
W
3 mph
0300
61°F
NE
3 mph
0600
61°F
SE
1 mph
0900
68°F
SE
5 mph
1200
77°F
E
5 mph
Units of measurement: °C / °F