Weather in Block Island: August
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Average day temperature: | 74.2°F |
| Average night temperature: | 70.0°F | |
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Sea water temperature: | 70.1°F |
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Number of sunny days: | 12 days |
| Day length: | 13.1 - 14.3 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.3 in. | |
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forecast
| Block Island |
temperature
| Block Island |
Air temperature in August, °F
The highest day temperature during August of 2026 was 86°F. At the same time the lowest night temperature was 64°F. Daily and nightly averages during August were 77.9°F and 69.1°F.
Sea water temperature in Block Island in August, °F
The average sea water temperature in August of 2026 was 70.2°F. The highest and lowest sea temperatures during the month were 72.3°F and 68.5°F.
Number of sunny, partly cloudy and cloudy days in August is almost equal.
Precipitation total in August, in.
Precipitation total value in Block Island in August is 1.3 in. Other months of the year show relatively similar values.
The average wind speed value in August is 11.1 mph It makes August 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 August is: 8.3.
Best time for vacation in Block Island
Block Island on a weather map
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