World Resorts USA Block Island Weather

Block Island Sea Temperature in October

Average sea water temperature in October:
+63.5°F
Minimum sea water temperature in October: 68.4°F
Maximum sea water temperature in October: 59.9°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 64.4°F. The highest and lowest sea temperatures during the month were 68.2°F and 59.9°F.

Monthly sea water temperature in Block Island, °F

Which USA resorts have warmest sea in October?

Place name October 2025 October 2024
Key West 83.8°F 82.9°F
Fort Lauderdale 83.5°F 83.0°F
Miami Beach 83.4°F 83.4°F
Miami 82.7°F 82.9°F
Corpus Christi 82.2°F 80.6°F
Naples 81.9°F 81.6°F
Kauai 81.3°F 79.2°F
Honolulu 80.7°F 80.6°F
Hawaii 80.6°F 80.5°F
Molokai 80.5°F 80.1°F
Siesta Key 80.4°F 80.7°F
Houston 80.4°F 78.8°F
Hilo 80.3°F 79.7°F
Sarasota 80.2°F 80.5°F
Maui 79.8°F 79.4°F
Oahu 79.8°F 80.2°F
St. Petersburg 79.4°F 79.0°F
Tampa 79.4°F 79.3°F
Panama City Beach 79.2°F 78.9°F
Cocoa Beach 79.2°F 79.9°F

Best time for vacation in Block Island

Sunniest months:
November 16 days
September 14 days
June 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
N 7 mph
Feels like: +70°F
Precip.: 13%
Places in USA:
Name
°F
+68°F
+79°F
+97°F
+75°F
+82°F
+84°F
+75°F
+81°F
+75°F
+66°F
+68°F
+81°F
+84°F
+91°F
+86°F
24 Hours Forecast
Block Island
Local time: 19:36
June 29, monday
2100
64°F
N
7 mph
June 30, tuesday
0000
63°F
NE
7 mph
0300
64°F
E
8 mph
0600
63°F
NE
7 mph
0900
70°F
NE
9 mph
1200
70°F
NE
14 mph
1500
70°F
NE
18 mph
1800
70°F
NE
20 mph
Units of measurement: °C / °F