World Resorts USA Mount Desert Island Weather

Mount Desert Island 7 Days Forecast

30.12
tue
Day
19°F
E 21 mph
Precip.
0%
Night
12°F
E 18 mph
Precip.
0%
31.12
wed
Day
21°F
E 13 mph
Precip.
0%
Night
27°F
NE 7 mph
Precip.
100%
01.01
thu
Day
25°F
SE 13 mph
Precip.
0%
Night
18°F
E 9 mph
Precip.
0%
02.01
fri
Day
21°F
E 4 mph
Precip.
0%
Night
18°F
E 7 mph
Precip.
0%
03.01
sat
Day
25°F
E 5 mph
Precip.
0%
Night
21°F
SE 6 mph
Precip.
0%
04.01
sun
Day
10°F
SE 17 mph
Precip.
0%
Night
7°F
SE 9 mph
Precip.
0%
05.01
mon
Day
12°F
SE 4 mph
Precip.
0%
Night
27°F
N 12 mph
Precip.
100%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 43.2°F. The highest and lowest sea temperatures during the month were 46.6°F and 39.9°F.

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 38.0°F. The highest and lowest sea temperatures during the month were 41.0°F and 35.2°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:
September 13 days
November 13 days
October 13 days
Warmest months:
July 71.9 °F
August 71.3 °F
June 66.4 °F
Warmest sea temp:
August 61.6 °F
July 59.8 °F
September 58.6 °F
Coldest months:
January 29.4 °F
February 29.9 °F
December 34.8 °F
Rainiest months:
December 3 days
October 3 days
March 2 days
Windiest months:
December 10.7 mph
February 10.6 mph
March 10.5 mph

Mount Desert Island on a weather map

Mount Desert Island
+16°F
E 21 mph
Feels like: -2°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+75°F
+75°F
+66°F
+70°F
+70°F
+70°F
+70°F
+30°F
+79°F
+52°F
+59°F
+57°F
+55°F
+25°F
24 Hours Forecast
Mount Desert Island
Local time: 18:23
December 30, tuesday
2100
14°F
E
21 mph
December 31, wednesday
0000
12°F
E
18 mph
0300
12°F
E
18 mph
0600
14°F
E
17 mph
0900
18°F
E
12 mph
1200
21°F
E
13 mph
1500
25°F
E
12 mph
1800
28°F
NE
7 mph
Units of measurement: °C / °F