Measurements:
°C
°F
Block Island
40°F
SW 30 mph
Feels like: 28°F
Precip: 0%
World Resorts USA Block Island Weather

Block Island Sea Water Temperature

Current Sea Water Temperature:
+41.6°F
Maximum Sea Water Temperature in April: 48.4°F
Minimum Sea Water Temperature in April: 40.6°F
Average water temperature in April: 44.3°F

Sea Water Temperature for the Last 10 Days:

April 12 41.6°F April 07 43.4°F
April 11 41.6°F April 06 43.6°F
April 10 42.0°F April 05 41.4°F
April 09 42.2°F April 04 41.6°F
April 08 43.4°F April 03 42.0°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, July and September.

Average Water Temperature by Month, °F

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
12
24
36
48
60
72
84
96
50.4
58.7
64.9
70.4
72.6
70.7
61.5
51.3
44.3
40.8
40.4
44.1

Sea Water Temperature in August

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
65
68
71
74
77
80

The average sea surface temperature in August 2024 for Block Island was 71.7°F. The maximum and minimum values were 69.6°F and 73.8°F respectively.

Sea Water Temperature in July

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
60
63
66
69
72
75
78
81

The average sea surface temperature in July 2024 for Block Island was 70.6°F. The maximum and minimum values were 64.8°F and 73.6°F respectively.

Sea Water Temperature in September

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
60
63
66
69
72
75
78
81

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.

Best Time to Visit Block Island
The most sunny months:
November 15 days
June 14 days
September 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:
January 36.0 °F
February 36.1 °F
March 41.8 °F
The most rainy months:
October 4 days
January 3 days
November 3 days
The most windy months:
January 16 mph
March 15 mph
December 15 mph

Block Island on the Weather Map

USA Resorts:
NAME
Boston +36
Chicago +54
Hawaii +80
Honolulu +80
Houston +86
Las Vegas +96
Los Angeles +76
Miami +86
New York +36
Orlando +80
San Diego +68
San Francisco +60
Sarasota +76
Tampa +80
Washington +52
24 Hours Weather Forecast
Block Island
Local time: 18:53
12 apr, saturday
2100 38°F
SW
30 mph
13 apr, sunday
0000 38°F
SW
29 mph
0300 38°F
SW
25 mph
0600 38°F
S
24 mph
0900 38°F
S
21 mph
1200 38°F
S
17 mph
1500 40°F
S
11 mph
1800 44°F
SE
7 mph