World Resorts USA Mount Desert Island Weather

Mount Desert Island weather in July

Weather in Mount Desert Island: July

Average day temperature: 73.0°F
Average night temperature: 61.7°F
Sea water temperature: 59.6°F
Number of sunny days: 10 days
Day length: 14.7 - 15.5 hours
Number of rainy days: 2 days
Precipitation totals: 1.0 in.

Air temperature in July, °F

Show year:
2026
2025
2024

The highest day temperature during July of 2026 was 95°F. At the same time the lowest night temperature was 51°F. Daily and nightly averages during July were 79.4°F and 60.9°F.

Sea water temperature in Mount Desert Island 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.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in July is almost equal.

Precipitation total in July, in.

Precipitation total value in Mount Desert Island in July is 1.0 in. Other months of the year show relatively similar values.

Wind speed in July, mph

The average wind speed value in July is 6.7 mph It makes July one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in July is: 7.8.

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

Mount Desert Island
+88°F
NE 8 mph
Feels like: +90°F
Precip.: 2%
Places in USA:
Name
°F
+90°F
+95°F
+77°F
+99°F
+77°F
+91°F
+72°F
+93°F
+90°F
+73°F
+61°F
+73°F
+91°F
+95°F
+72°F
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