World Resorts USA Nantucket Weather

Nantucket Sea Temperature in March

Average sea water temperature in March:
+40.5°F
Minimum sea water temperature in March: 44.6°F
Maximum sea water temperature in March: 36.1°F

Daily sea water temperature in March, °F

Show year:
2026
2025
2024

The average sea water temperature in March of 2026 was 40.0°F. The highest and lowest sea temperatures during the month were 43.7°F and 36.1°F.

Monthly sea water temperature in Nantucket, °F

Which USA resorts have warmest sea in March?

Place name March 2026 March 2025
Everglades 77.4°F 74.4°F
West Palm Beach 77.1°F 75.8°F
Key Largo 76.8°F 75.1°F
Miami Beach 76.8°F 75.3°F
Honolulu 76.7°F 76.8°F
Fort Lauderdale 76.6°F 75.8°F
Hawaii 76.5°F 76.7°F
Kauai 76.5°F 75.0°F
Key West 76.5°F 74.5°F
Hialeah 76.1°F 74.6°F
Miami 76.0°F 74.4°F
Maui 75.5°F 76.0°F
Oahu 74.9°F 75.7°F
Cape Coral 73.9°F 71.7°F
Marco Island 73.5°F 71.8°F
Naples 72.6°F 71.4°F
Corpus Christi 71.9°F 67.0°F
Tampa 71.7°F 69.3°F
Cocoa Beach 71.7°F 70.0°F
St. Petersburg 71.2°F 68.8°F

Best time for vacation in Nantucket

Sunniest months:
June 13 days
October 13 days
September 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 36.1 °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
+64°F
NE 12 mph
Feels like: +64°F
Precip.: 3%
Places in USA:
Name
°F
+77°F
+77°F
+106°F
+75°F
+75°F
+81°F
+72°F
+77°F
+66°F
+75°F
+66°F
+81°F
+84°F
+79°F
+70°F
24 Hours Forecast
Nantucket
Local time: 22:22
June 06, saturday
0000
61°F
NE
14 mph
0300
59°F
NE
14 mph
0600
61°F
NE
13 mph
0900
61°F
NE
14 mph
1200
63°F
NE
16 mph
1500
63°F
NE
19 mph
1800
63°F
NE
24 mph
2100
63°F
NE
25 mph
Units of measurement: °C / °F