Measurements:
°C
°F
Block Island
46°F
NE 13 mph
Feels like: 40°F
Precip: 100%
World Resorts USA Block Island Weather

Block Island Sea Water Temperature

Current Sea Water Temperature:
+46.2°F
Maximum Sea Water Temperature in April: 48.4°F
Minimum Sea Water Temperature in April: 40.6°F
Average water temperature in April: 44.4°F

Sea Water Temperature for the Last 10 Days:

April 27 46.2°F April 22 45.6°F
April 26 45.8°F April 21 45.6°F
April 25 46.6°F April 20 44.4°F
April 24 45.8°F April 19 45.6°F
April 23 45.8°F April 18 45.6°F

When is the Warmest Sea for Block Island?

According to our data for the last three years for Block Island the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2023 2022 2021

The average sea surface temperature in August 2023 for Block Island was 71.3°F. The maximum and minimum values were 69.4°F and 72.8°F respectively.

Sea Water Temperature in September

Select Year: 2023 2022 2021

The average sea surface temperature in September 2023 for Block Island was 70.0°F. The maximum and minimum values were 64.2°F and 74.2°F respectively.

Sea Water Temperature in July

Select Year: 2023 2022 2021

The average sea surface temperature in July 2023 for Block Island was 72.5°F. The maximum and minimum values were 66.8°F and 75.6°F respectively.

Best Time to Visit Block Island
The most sunny months:
September 15 days
November 15 days
June 13 days
The most warm months:
July 78.3 °F
August 77.7 °F
September 71.5 °F
Warmest sea temperature:
August 72.7 °F
September 70.9 °F
July 70.7 °F
The most cold months:
February 36.5 °F
January 36.6 °F
March 42.0 °F
The most rainy months:
November 4 days
October 4 days
February 3 days
The most windy months:
December 15 mph
March 14 mph
January 14 mph

Block Island on the Weather Map

USA Resorts:
NAME
Boston +46
Chicago +62
Hawaii +76
Honolulu +76
Houston +76
Las Vegas +66
Los Angeles +62
Miami +78
New York +52
Orlando +72
San Diego +60
San Francisco +52
Sarasota +70
Tampa +72
Washington +54
24 Hours Weather Forecast
Block Island
Local time: 02:47
28 apr, sunday
0300 46°F
NE
13 mph
0600 46°F
NE
16 mph
0900 46°F
NE
17 mph
1200 48°F
NE
14 mph
1500 48°F
N
13 mph
1800 48°F
N
9 mph
2100 50°F
NE
12 mph
29 apr, monday
0000 52°F
NE
12 mph