Weather in Block Island: September
 |
Average day temperature: | 68.7°F |
| Average night temperature: | 65.4°F | |
 |
Sea water temperature: | 68.4°F |
 |
Number of sunny days: | 14 days |
| Day length: | 11.8 - 13.1 hours | |
 |
Number of rainy days: | 3 days |
| Precipitation totals: | 1.4 in. | |
| more information | ||
forecast
| Block Island |
temperature
| Block Island |
Air temperature in September, °F
The highest day temperature during September of 2024 was 70°F. At the same time the lowest night temperature was 59°F. Day and night temperature averages during September were 66.1°F and 63.6°F.
Sea water temperature in Block Island in September, °F
The average sea water temperature in September of 2024 was 66.6°F. The highest and lowest sea temperatures during the month were 68.5°F and 64.2°F.
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Block Island in September is 1.4 in. Other months of the year show relatively similar values.
The average wind speed value in September is 12.3 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 September is: 7.6.
Best time for vacation in Block Island
Block Island on a weather map
27 mph
30 mph
29 mph
30 mph
32 mph
32 mph
30 mph
28 mph
