World Resorts USA Nantucket Weather

Nantucket Sea Temperature in January

Average sea water temperature in January:
+39.9°F
Minimum sea water temperature in January: 45.3°F
Maximum sea water temperature in January: 32.9°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 36.7°F. The highest and lowest sea temperatures during the month were 38.8°F and 32.9°F.

Monthly sea water temperature in Nantucket, °F

Which USA resorts have warmest sea in January?

Place name January 2026 January 2025
Honolulu 77.2°F 77.6°F
Hawaii 77.2°F 77.5°F
Maui 77.0°F 76.9°F
Kauai 77.0°F 75.0°F
West Palm Beach 76.6°F 75.5°F
Oahu 76.1°F 76.5°F
Fort Lauderdale 75.9°F 75.1°F
Miami Beach 74.0°F 73.1°F
Key West 72.5°F 70.3°F
Miami 71.2°F 70.7°F
Naples 67.7°F 64.7°F
Cocoa Beach 66.9°F 60.9°F
Sarasota 65.0°F 61.2°F
Orlando 64.8°F 59.8°F
Tampa 64.3°F 60.4°F
Daytona Beach 64.1°F 59.7°F
Fort Walton Beach 63.2°F 61.8°F
Destin 62.8°F 61.4°F
Santa Rosa Beach 62.4°F 61.1°F
Pensacola Beach 62.1°F 61.5°F

Best time for vacation in Nantucket

Sunniest months:
June 14 days
September 13 days
October 13 days
Warmest months:
July 71.5 °F
August 70.9 °F
September 67.1 °F
Warmest sea temp:
August 71.9 °F
July 70.0 °F
September 68.5 °F
Coldest months:
February 36.1 °F
January 36.4 °F
March 40.7 °F
Rainiest months:
October 4 days
January 3 days
December 3 days
Windiest months:
January 19.0 mph
March 19.0 mph
December 18.9 mph

Nantucket on a weather map

Nantucket
+77°F
E 19 mph
Feels like: +81°F
Precip.: 5%
Places in USA:
Name
°F
+81°F
+86°F
+79°F
+106°F
+95°F
+91°F
+64°F
+84°F
+79°F
+90°F
+66°F
+81°F
+95°F
+102°F
+79°F
24 Hours Forecast
Nantucket
Local time: 16:18
August 25, tuesday
1800
77°F
NE
19 mph
2100
70°F
E
19 mph
August 26, wednesday
0000
68°F
E
14 mph
0300
70°F
E
14 mph
0600
70°F
E
12 mph
0900
68°F
SE
13 mph
1200
70°F
E
9 mph
1500
70°F
E
9 mph
Units of measurement: °C / °F