World Resorts USA Block Island Weather

Block Island Sea Temperature in April

Average sea water temperature in April:
+44.5°F
Minimum sea water temperature in April: 48.6°F
Maximum sea water temperature in April: 39.0°F

Daily sea water temperature in April, °F

Show year:
2026
2025
2024

The average sea water temperature in April of 2026 was 42.5°F. The highest and lowest sea temperatures during the month were 46.0°F and 39.0°F.

Monthly sea water temperature in Block Island, °F

Which USA resorts have warmest sea in April?

Place name April 2026 April 2025
Everglades 78.6°F 78.8°F
Key Largo 78.2°F 78.5°F
West Palm Beach 78.2°F 78.3°F
Key West 78.2°F 78.0°F
Fort Lauderdale 78.1°F 78.0°F
Miami Beach 78.0°F 78.3°F
Hialeah 77.7°F 77.9°F
Miami 77.5°F 77.9°F
Honolulu 76.5°F 77.4°F
Cape Coral 76.4°F 77.2°F
Marco Island 76.3°F 77.3°F
Hawaii 76.2°F 77.3°F
Maui 75.9°F 76.6°F
Kauai 75.9°F 74.9°F
Naples 75.8°F 77.0°F
Tampa 75.3°F 76.6°F
St. Petersburg 75.2°F 76.3°F
Cocoa Beach 75.0°F 75.1°F
Corpus Christi 75.0°F 74.7°F
Oahu 74.9°F 76.4°F

Best time for vacation in Block Island

Sunniest months:
November 16 days
September 14 days
December 14 days
Warmest months:
July 74.4 °F
August 73.5 °F
September 68.8 °F
Warmest sea temp:
August 70.1 °F
July 68.6 °F
September 68.3 °F
Coldest months:
January 36.8 °F
February 36.9 °F
December 42.5 °F
Rainiest months:
October 4 days
January 3 days
March 3 days
Windiest months:
December 16.1 mph
January 16.0 mph
November 15.7 mph

Block Island on a weather map

Block Island
+70°F
NW 12 mph
Feels like: +70°F
Precip.: 1%
Places in USA:
Name
°F
+77°F
+77°F
+100°F
+79°F
+88°F
+90°F
+72°F
+79°F
+70°F
+64°F
+68°F
+95°F
+102°F
+88°F
+77°F
24 Hours Forecast
Block Island
Local time: 16:19
June 08, monday
1800
66°F
N
12 mph
2100
59°F
NE
15 mph
June 09, tuesday
0000
59°F
NE
14 mph
0300
61°F
E
16 mph
0600
61°F
E
16 mph
0900
63°F
E
17 mph
1200
63°F
NE
17 mph
1500
63°F
NE
22 mph
Units of measurement: °C / °F