Weather in Mount Desert Island: July
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Average day temperature: | 71.9°F |
| Average night temperature: | 61.8°F | |
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Sea water temperature: | 59.8°F |
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Number of sunny days: | 8 days |
| Day length: | 14.7 - 15.5 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.1 in. | |
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forecast
| Mount Desert Island |
temperature
| Mount Desert Island |
Air temperature in July, °F
The highest day temperature during July of 2025 was 77°F. At the same time the lowest night temperature was 50°F. Daily and nightly averages during July were 68.2°F and 59.9°F.
Sea water temperature in Mount Desert Island in July, °F
The average sea water temperature in July of 2025 was 58.2°F. The highest and lowest sea temperatures during the month were 60.6°F and 54.9°F.
Mostly all days in July are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in July, in.
Precipitation total value in Mount Desert Island in July is 1.1 in. Other months of the year show relatively similar values.
The average wind speed value in July is 6.6 mph It makes July one of the least windy months of the year.
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: 6.9.
Best time for vacation in Mount Desert Island
Mount Desert Island on a weather map
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