World Resorts USA Nantucket Weather

Nantucket Sea Temperature in October

Average sea water temperature in October:
+61.7°F
Minimum sea water temperature in October: 68.5°F
Maximum sea water temperature in October: 56.8°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 61.0°F. The highest and lowest sea temperatures during the month were 67.6°F and 56.8°F.

Monthly sea water temperature in Nantucket, °F

Which USA resorts have warmest sea in October?

Place name October 2025 October 2024
South Padre Island 84.0°F 82.4°F
Key West 83.8°F 82.9°F
Fort Lauderdale 83.5°F 83.0°F
Miami Beach 83.4°F 83.4°F
Islamorada 83.1°F 82.9°F
Key Largo 83.0°F 83.1°F
Miami 82.7°F 82.9°F
Everglades 82.5°F 82.6°F
Corpus Christi 82.2°F 80.6°F
Marco Island 82.0°F 81.9°F
Naples 81.9°F 81.6°F
Princeville 81.3°F 79.2°F
Kauai 81.3°F 79.2°F
Cape Coral 81.1°F 81.2°F
Kailua Kona 80.9°F 80.6°F
Honolulu 80.7°F 80.6°F
Hawaii 80.6°F 80.5°F
Siesta Key 80.4°F 80.7°F
Houston 80.4°F 78.8°F
Sarasota 80.2°F 80.5°F

Best time for vacation in Nantucket

Sunniest months:
June 13 days
September 13 days
October 13 days
Warmest months:
August 70.9 °F
July 70.6 °F
September 67.1 °F
Warmest sea temp:
August 72.0 °F
July 70.1 °F
September 68.5 °F
Coldest months:
February 36.5 °F
January 36.9 °F
March 40.4 °F
Rainiest months:
January 4 days
October 4 days
December 3 days
Windiest months:
March 19.1 mph
January 19.0 mph
November 18.6 mph

Nantucket on a weather map

Nantucket
+25°F
SE 32 mph
Feels like: +10°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+75°F
+75°F
+45°F
+55°F
+70°F
+77°F
+70°F
+23°F
+57°F
+48°F
+63°F
+63°F
+46°F
+5°F
24 Hours Forecast
Nantucket
Local time: 01:10
December 05, friday
0300
21°F
SE
22 mph
0600
21°F
S
16 mph
0900
25°F
S
6 mph
1200
28°F
NE
4 mph
1500
30°F
NE
9 mph
1800
32°F
NE
8 mph
2100
34°F
N
7 mph
December 06, saturday
0000
36°F
N
6 mph
Units of measurement: °C / °F