Weather in Mount Desert Island: August
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Average day temperature: | 71.3°F |
| Average night temperature: | 60.9°F | |
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Sea water temperature: | 61.7°F |
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Number of sunny days: | 11 days |
| Day length: | 13.3 - 14.6 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.9 in. | |
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forecast
| Mount Desert Island |
temperature
| Mount Desert Island |
Air temperature in August, °F
The highest day temperature during August of 2025 was 76°F. At the same time the lowest night temperature was 51°F. Daily and nightly averages during August were 68.5°F and 57.2°F.
Sea water temperature in Mount Desert Island in August, °F
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.
Number of sunny, partly cloudy and cloudy days in August is almost equal.
Precipitation total in August, in.
Precipitation total value in Mount Desert Island in August is 0.9 in. Other months of the year show relatively similar values.
The average wind speed value in August is 6.3 mph It makes August lest windy month 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 August is: 7.1.
Best time for vacation in Mount Desert Island
Mount Desert Island on a weather map
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