Weather in Nantucket: October
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Average day temperature: | 59.6°F |
| Average night temperature: | 58.1°F | |
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Sea water temperature: | 61.7°F |
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Number of sunny days: | 13 days |
| Day length: | 10.4 - 11.7 hours | |
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Number of rainy days: | 4 days |
| Precipitation totals: | 1.6 in. | |
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forecast
| Nantucket |
temperature
| Nantucket |
Air temperature in October, °F
The highest day temperature during October of 2025 was 72°F. At the same time the lowest night temperature was 44°F. Daily and nightly averages during October were 60.2°F and 54.8°F.
Sea water temperature in Nantucket in October, °F
The average sea water temperature in October of 2025 was 61.0°F. The highest and lowest sea temperatures during the month were 67.6°F and 56.8°F.
Mostly all days in October are sunny but cloudy days are also possible.
Precipitation total in October, in.
Precipitation total value in Nantucket in October is 1.6 in. Other months of the year show relatively similar values.
The average wind speed value in October is 16.4 mph
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 October is: 6.2.
Best time for vacation in Nantucket
Nantucket on a weather map
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