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
December 14 days
September 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 42.5 °F
Rainiest months:
October 4 days
January 3 days
March 3 days
Windiest months:
December 16.1 mph
November 15.7 mph
January 15.6 mph

Block Island on a weather map

Block Island
+25°F
SE 14 mph
Feels like: +14°F
Precip.: 0%
Places in USA:
Name
°F
+25°F
+72°F
+72°F
+45°F
+59°F
+50°F
+61°F
+66°F
+21°F
+61°F
+55°F
+61°F
+59°F
+64°F
+19°F
24 Hours Forecast
Block Island
Local time: 07:17
January 03, saturday
0900
27°F
E
15 mph
1200
32°F
E
14 mph
1500
36°F
E
13 mph
1800
34°F
E
9 mph
2100
32°F
E
6 mph
January 04, sunday
0000
32°F
E
3 mph
0300
32°F
S
4 mph
0600
32°F
S
7 mph
Units of measurement: °C / °F