World Resorts USA Block Island Weather

Block Island Sea Temperature in May

Average sea water temperature in May:
+51.3°F
Minimum sea water temperature in May: 57.7°F
Maximum sea water temperature in May: 45.5°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 52.0°F. The highest and lowest sea temperatures during the month were 55.4°F and 46.2°F.

Monthly sea water temperature in Block Island, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Islamorada 83.6°F 84.4°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Cape Coral 83.4°F 83.6°F
Sanibel Island 83.1°F 83.2°F
Sarasota 82.7°F 82.9°F
Tampa 82.7°F 82.5°F
St. Petersburg 82.6°F 82.4°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
West Palm Beach 81.1°F 81.5°F
Corpus Christi 80.9°F 81.0°F
Pensacola 80.1°F 79.4°F
South Padre Island 80.0°F 81.1°F

Best time for vacation in Block Island

Sunniest months:
November 16 days
September 14 days
October 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 37.4 °F
February 37.4 °F
March 42.7 °F
Rainiest months:
October 4 days
January 3 days
March 3 days
Windiest months:
November 15.7 mph
January 15.6 mph
March 15.4 mph

Block Island on a weather map

Block Island
+39°F
N 17 mph
Feels like: +32°F
Precip.: 100%
Places in USA:
Name
°F
+52°F
+75°F
+75°F
+68°F
+61°F
+79°F
+77°F
+68°F
+37°F
+63°F
+55°F
+84°F
+82°F
+82°F
+55°F
24 Hours Forecast
Block Island
Local time: 15:09
December 23, tuesday
1800
41°F
N
14 mph
2100
41°F
E
18 mph
December 24, wednesday
0000
41°F
E
21 mph
0300
41°F
E
22 mph
0600
37°F
SE
22 mph
0900
37°F
SE
30 mph
1200
37°F
SE
30 mph
1500
41°F
S
24 mph
Units of measurement: °C / °F