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
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
Cape Coral 83.4°F 83.6°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
Hialeah 82.3°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
Galveston 79.6°F 79.5°F
Houston 79.5°F 78.9°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
+46°F
W 17 mph
Feels like: +41°F
Precip.: 75%
Places in USA:
Name
°F
+57°F
+75°F
+75°F
+61°F
+68°F
+88°F
+82°F
+72°F
+50°F
+66°F
+59°F
+82°F
+90°F
+88°F
+50°F
24 Hours Forecast
Nantucket
Local time: 15:37
April 26, sunday
1800
48°F
SW
17 mph
2100
45°F
SW
16 mph
April 27, monday
0000
46°F
SW
14 mph
0300
48°F
SW
17 mph
0600
48°F
SW
19 mph
0900
48°F
SW
19 mph
1200
48°F
SW
20 mph
1500
48°F
SW
23 mph
Units of measurement: °C / °F