World Resorts USA Nantucket Weather

Nantucket Sea Temperature in April

Average sea water temperature in April:
+45.8°F
Minimum sea water temperature in April: 50.7°F
Maximum sea water temperature in April: 40.6°F

Daily sea water temperature in April, °F

Show year:
2026
2025
2024

The average sea water temperature in April of 2026 was 45.4°F. The highest and lowest sea temperatures during the month were 48.7°F and 40.6°F.

Monthly sea water temperature in Nantucket, °F

Which USA resorts have warmest sea in April?

Place name April 2026 April 2025
Key Largo 78.2°F 78.5°F
West Palm Beach 78.2°F 78.3°F
Key West 78.2°F 78.0°F
Fort Lauderdale 78.1°F 78.0°F
Miami Beach 78.0°F 78.3°F
Miami 77.5°F 77.9°F
Honolulu 76.5°F 77.4°F
Cape Coral 76.4°F 77.2°F
Port St. Lucie 76.4°F 74.9°F
Hawaii 76.2°F 77.3°F
Maui 75.9°F 76.6°F
Kauai 75.9°F 74.9°F
Naples 75.8°F 77.0°F
South Padre Island 75.7°F 74.5°F
Tampa 75.3°F 76.6°F
Cocoa Beach 75.0°F 75.1°F
Corpus Christi 75.0°F 74.7°F
Oahu 74.9°F 76.4°F
Clearwater Beach 74.7°F 75.6°F
Galveston 74.7°F 73.8°F

Best time for vacation in Nantucket

Sunniest months:
June 14 days
October 13 days
July 12 days
Warmest months:
August 71.7 °F
July 71.5 °F
September 67.1 °F
Warmest sea temp:
August 71.9 °F
July 70.0 °F
September 68.4 °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
+61°F
SW 16 mph
Feels like: +61°F
Precip.: 87%
Places in USA:
Name
°F
+55°F
+61°F
+77°F
+82°F
+88°F
+84°F
+70°F
+70°F
+59°F
+82°F
+66°F
+82°F
+79°F
+64°F
24 Hours Forecast
Nantucket
Local time: 22:34
October 05, monday
0000
61°F
SW
19 mph
0300
61°F
S
19 mph
0600
61°F
S
16 mph
0900
59°F
E
14 mph
1200
61°F
E
21 mph
1500
63°F
E
22 mph
1800
64°F
SE
25 mph
2100
61°F
SE
29 mph
Units of measurement: °C / °F