World Resorts USA Block Island Weather

Block Island Sea Temperature in March

Average sea water temperature in March:
+41.7°F
Minimum sea water temperature in March: 45.7°F
Maximum sea water temperature in March: 38.8°F

Daily sea water temperature in March, °F

Show year:
2025
2024
2023

The average sea water temperature in March of 2025 was 40.9°F. The highest and lowest sea temperatures during the month were 42.4°F and 39.2°F.

Monthly sea water temperature in Block Island, °F

Which USA resorts have warmest sea in March?

Place name March 2025 March 2024
Kailua Kona 77.7°F 76.5°F
Honolulu 76.8°F 75.8°F
Hawaii 76.7°F 75.7°F
Maui 76.0°F 75.1°F
West Palm Beach 75.8°F 76.6°F
Fort Lauderdale 75.8°F 75.7°F
Oahu 75.7°F 74.5°F
Miami Beach 75.3°F 76.0°F
Islamorada 75.2°F 77.3°F
Key Largo 75.1°F 76.9°F
Kauai 75.0°F 74.5°F
Key West 74.5°F 76.5°F
Everglades 74.4°F 77.3°F
Miami 74.4°F 75.5°F
Marco Island 71.8°F 74.5°F
Naples 71.4°F 73.8°F
Sanibel Island 70.9°F 73.0°F
Cocoa Beach 70.0°F 71.5°F
Tampa 69.3°F 71.7°F
St. Petersburg 68.8°F 71.8°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
December 42.6 °F
Rainiest months:
October 4 days
January 3 days
March 3 days
Windiest months:
December 16.0 mph
November 15.7 mph
January 15.6 mph

Block Island on a weather map

Block Island
+48°F
NE 24 mph
Feels like: +41°F
Precip.: 100%
Places in USA:
Name
°F
+52°F
+77°F
+77°F
+63°F
+70°F
+82°F
+81°F
+70°F
+46°F
+72°F
+57°F
+75°F
+79°F
+54°F
+21°F
24 Hours Forecast
Block Island
Local time: 16:01
December 29, monday
1800
46°F
E
32 mph
2100
41°F
E
38 mph
December 30, tuesday
0000
36°F
E
39 mph
0300
34°F
E
35 mph
0600
34°F
E
36 mph
0900
34°F
E
35 mph
1200
34°F
E
35 mph
1500
34°F
E
35 mph
Units of measurement: °C / °F