Weather in Nantucket: August
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Average day temperature: | 71.7°F |
| Average night temperature: | 70.0°F | |
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Sea water temperature: | 72.0°F |
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Number of sunny days: | 12 days |
| Day length: | 13.1 - 14.4 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.4 in. | |
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| Nantucket |
temperature
| Nantucket |
Air temperature in August, °F
The highest day temperature during August of 2026 was 84°F. At the same time the lowest night temperature was 64°F. Daily and nightly averages during August were 76.1°F and 69.7°F.
Sea water temperature in Nantucket in August, °F
The average sea water temperature in August of 2026 was 71.5°F. The highest and lowest sea temperatures during the month were 73.8°F and 67.6°F.
Number of sunny, partly cloudy and cloudy days in August is almost equal.
Precipitation total in August, in.
Precipitation total value in Nantucket in August is 1.4 in. Other months of the year show relatively similar values.
The average wind speed value in August is 13.1 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: 8.1.
Best time for vacation in Nantucket
Nantucket on a weather map
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