Measurements:
°C
°F
Block Island
20°F
SE 20 mph
Feels like: 2°F
Precip: 0%
World Resorts USA Block Island Weather September Weather in Block Island

Block Island Weather: September

Average Day Temperature: 70.8°F
Average Night Temperature: 67.2°F
Sea Water Temperature: 70.4°F
Number of Sunny Days: 14 days
Sunshine Hours: 11.8 - 13.1 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.4 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 73°F. The lowest night temperature was 61°F. The average values for day and night temperatures during September were 67.9°F и 65.2°F respectivly.

Block Island Water Sea Temperature in September, °F

Select Year: 2024 2023 2022

The average sea surface temperature in September 2024 for Block Island was 68.4°F. The maximum and minimum values were 65.8°F and 70.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Block Island is 1.4 in.

Wind Speed in September, mph

The average wind speed in September is 12.3 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Block Island in September is 7.8 hours.

Best Time to Visit Block Island
The most sunny months:
November 15 days
September 14 days
June 14 days
The most warm months:
July 77.7 °F
August 76.8 °F
September 70.8 °F
Warmest sea temperature:
August 72.5 °F
July 70.7 °F
September 70.4 °F
The most cold months:
February 36.5 °F
January 36.6 °F
March 42.0 °F
The most rainy months:
October 4 days
February 3 days
January 3 days
The most windy months:
November 15 mph
December 15 mph
March 14 mph

Block Island on the Weather Map

USA Resorts:
NAME
Boston +10
Chicago +20
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +50
Los Angeles +54
Miami +62
New York +16
Orlando +50
San Diego +54
San Francisco +54
Sarasota +48
Tampa +46
Washington +20
24 Hours Weather Forecast
Block Island
Local time: 05:20
22 dec, sunday
0600 20°F
SE
20 mph
0900 18°F
SE
19 mph
1200 22°F
SE
17 mph
1500 26°F
SE
16 mph
1800 28°F
S
16 mph
2100 24°F
S
16 mph
23 dec, monday
0000 22°F
S
11 mph
0300 20°F
S
9 mph