World Resorts USA Block Island Weather

Block Island Sea Temperature in August

Average sea water temperature in August:
+70.1°F
Minimum sea water temperature in August: 74.1°F
Maximum sea water temperature in August: 66.9°F

Daily sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 69.0°F. The highest and lowest sea temperatures during the month were 71.1°F and 66.9°F.

Monthly sea water temperature in Block Island, °F

Which USA resorts have warmest sea in August?

Place name August 2025 August 2024
Key West 88.8°F 87.8°F
Naples 88.7°F 87.0°F
Tampa 88.6°F 86.4°F
Sarasota 88.6°F 87.2°F
Clearwater Beach 88.5°F 87.0°F
Miami 88.1°F 86.4°F
Miami Beach 87.9°F 86.5°F
Houston 87.8°F 88.0°F
New Orleans 87.4°F 88.1°F
West Palm Beach 86.8°F 86.2°F
Cocoa Beach 86.8°F 84.5°F
Pensacola Beach 86.6°F 87.4°F
St. George Island 86.5°F 86.8°F
Panama City Beach 86.2°F 86.8°F
Destin 86.0°F 86.9°F
Fort Walton Beach 86.0°F 86.8°F
Santa Rosa Beach 85.9°F 86.8°F
Hilton Head Island 85.0°F 84.0°F
Jacksonville 84.9°F 82.9°F
Orlando 84.9°F 83.4°F

Best time for vacation in Block Island

Sunniest months:
November 16 days
December 14 days
June 14 days
Warmest months:
July 74.8 °F
August 73.5 °F
September 68.8 °F
Warmest sea temp:
August 70.1 °F
July 68.4 °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
+72°F
SE 11 mph
Feels like: +77°F
Precip.: 12%
Places in USA:
Name
°F
+72°F
+81°F
+79°F
+86°F
+70°F
+81°F
+75°F
+81°F
+75°F
+70°F
+59°F
+68°F
+81°F
+82°F
+72°F
24 Hours Forecast
Block Island
Local time: 23:06
August 14, friday
0000
72°F
SE
11 mph
0300
72°F
SE
11 mph
0600
68°F
S
9 mph
0900
72°F
SE
6 mph
1200
75°F
NE
7 mph
1500
77°F
NE
12 mph
1800
75°F
NE
11 mph
2100
72°F
S
4 mph
Units of measurement: °C / °F