World Resorts USA Mount Desert Island Weather

Mount Desert Island sea water temperature

Current sea water temperature:
+52.3°F
Minimum sea water temperature in October: 58.8°F
Maximum sea water temperature in October: 51.8°F
Average sea water temperature in October: 55.2°F

Sea water temperature for the last 10 days:

October 28 52.3°F October 23 51.8°F
October 27 52.5°F October 22 52.9°F
October 26 52.3°F October 21 53.2°F
October 25 52.5°F October 20 53.1°F
October 24 52.7°F October 19 53.6°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:
2026
2025
2024

The average sea water temperature in September of 2026 was 57.2°F. The highest and lowest sea temperatures during the month were 60.8°F and 54.9°F.

Best time for vacation in Mount Desert Island

Sunniest months:
October 13 days
November 13 days
September 12 days
Warmest months:
July 73.0 °F
August 72.4 °F
June 67.2 °F
Warmest sea temp:
August 61.6 °F
July 59.6 °F
September 58.4 °F
Coldest months:
January 28.9 °F
February 30.1 °F
December 34.8 °F
Rainiest months:
December 3 days
October 3 days
March 2 days
Windiest months:
December 10.7 mph
March 10.5 mph
February 10.4 mph

Mount Desert Island on a weather map

Mount Desert Island
+57°F
NE 12 mph
Feels like: +55°F
Precip.: 4%
Places in USA:
Name
°F
+63°F
+66°F
+77°F
+66°F
+68°F
+84°F
+70°F
+64°F
+68°F
+59°F
+68°F
+82°F
+82°F
+81°F
+66°F
24 Hours Forecast
Mount Desert Island
Local time: 12:47
October 29, thursday
1500
57°F
NE
13 mph
1800
54°F
NE
11 mph
2100
54°F
NE
9 mph
October 30, friday
0000
54°F
NE
9 mph
0300
54°F
NE
6 mph
0600
54°F
NE
6 mph
0900
55°F
E
5 mph
1200
63°F
SE
11 mph
Units of measurement: °C / °F