World Resorts USA Nantucket Weather

Nantucket Sea Temperature in May

Average sea water temperature in May:
+52.9°F
Minimum sea water temperature in May: 61.0°F
Maximum sea water temperature in May: 45.0°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 53.2°F. The highest and lowest sea temperatures during the month were 56.3°F and 49.8°F.

Monthly sea water temperature in Nantucket, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Islamorada 83.6°F 84.4°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Sanibel Island 83.1°F 83.2°F
Tampa 82.7°F 82.5°F
Sarasota 82.7°F 82.9°F
St. Petersburg 82.6°F 82.4°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
West Palm Beach 81.1°F 81.5°F
Corpus Christi 80.9°F 81.0°F
Pensacola 80.1°F 79.4°F
South Padre Island 80.0°F 81.1°F
Pass Christian 79.8°F 79.8°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
December 18.9 mph

Nantucket on a weather map

Nantucket
+36°F
E 30 mph
Feels like: +27°F
Precip.: 0%
Places in USA:
Name
°F
+41°F
+73°F
+73°F
+45°F
+55°F
+72°F
+75°F
+66°F
+37°F
+57°F
+46°F
+64°F
+61°F
+45°F
+27°F
24 Hours Forecast
Nantucket
Local time: 10:52
January 12, monday
1200
36°F
E
30 mph
1500
37°F
E
24 mph
1800
39°F
E
22 mph
2100
37°F
NE
21 mph
January 13, tuesday
0000
39°F
E
22 mph
0300
37°F
E
20 mph
0600
37°F
E
17 mph
0900
37°F
E
15 mph
Units of measurement: °C / °F