The USA resorts with the warmest sea water temperature in May are Everglades, Key West and Islamorada.
Below you can see a list of all popular USA resorts and information about sea water temperature in May for the last two years.
| Resort Name | May 2026 | May 2025 | May 2024 |
|---|---|---|---|
| Everglades | 88.4°F | 88.3°F | 88.5°F |
| Key West | 88.1°F | 87.3°F | 88.5°F |
| Islamorada | 88.0°F | 87.4°F | 88.2°F |
| Key Largo | 87.8°F | 87.2°F | 87.9°F |
| Miami | 87.0°F | 86.2°F | 87.0°F |
| Cape Coral | 87.0°F | 87.1°F | 87.3°F |
| Marco Island | 86.8°F | 87.2°F | 87.8°F |
| Hialeah | 86.6°F | 85.9°F | 86.7°F |
| Naples | 86.5°F | 87.2°F | 87.6°F |
| Miami Beach | 86.3°F | 86.0°F | 86.6°F |
| Sanibel Island | 85.9°F | 86.8°F | 86.9°F |
| St. Petersburg | 85.6°F | 86.3°F | 85.9°F |
| Tampa | 85.5°F | 86.3°F | 86.1°F |
| West Palm Beach | 85.2°F | 84.6°F | 85.0°F |
| Fort Lauderdale | 85.2°F | 84.6°F | 85.2°F |
| Clearwater Beach | 85.0°F | 86.2°F | 86.1°F |
| Sarasota | 85.0°F | 86.3°F | 86.6°F |
| Siesta Key | 84.8°F | 86.1°F | 86.3°F |
| Port St. Lucie | 84.3°F | 82.1°F | 82.8°F |
| Cocoa Beach | 83.8°F | 82.6°F | 83.3°F |
| Corpus Christi | 82.8°F | 84.4°F | 84.4°F |
| Kailua Kona | 82.7°F | 82.3°F | 81.3°F |
| Grand Isle | 82.7°F | 84.5°F | 83.7°F |
| South Padre Island | 82.3°F | 83.3°F | 84.6°F |
| Port Aransas | 82.2°F | 83.6°F | 84.1°F |
| Mustang Island | 82.1°F | 83.5°F | 83.9°F |
| Avery Island | 82.0°F | 82.7°F | 83.3°F |
| Galveston Island | 81.7°F | 83.1°F | 83.2°F |
| Galveston | 81.6°F | 82.9°F | 82.8°F |
| Orlando | 81.6°F | 80.2°F | 80.7°F |
| Houston | 81.5°F | 82.8°F | 82.1°F |
| Daytona Beach | 81.3°F | 78.9°F | 80.2°F |
| Kihei | 81.2°F | 81.5°F | 80.7°F |
| Hilo | 81.2°F | 80.8°F | 79.1°F |
| New Orleans | 81.1°F | 82.8°F | 83.2°F |
| Honolulu | 81.1°F | 81.2°F | 80.7°F |
| Hawaii | 81.0°F | 81.1°F | 80.3°F |
| Lanai | 81.0°F | 81.8°F | 81.0°F |
| St. George Island | 80.9°F | 82.5°F | 82.3°F |
| Molokai | 80.7°F | 81.1°F | 80.0°F |
| Gulfport | 80.7°F | 83.6°F | 82.8°F |
| Kahului | 80.4°F | 80.8°F | 79.5°F |
| Long Beach | 80.3°F | 83.3°F | 83.2°F |
| Bay Saint Louis | 80.3°F | 83.1°F | 82.9°F |
| Pass Christian | 80.3°F | 83.2°F | 83.2°F |
| Biloxi | 80.2°F | 83.3°F | 83.0°F |
| Ocean Springs | 80.2°F | 83.3°F | 83.2°F |
| Maui | 80.0°F | 80.5°F | 79.0°F |
| Pensacola | 79.9°F | 83.5°F | 82.7°F |
| Panama City Beach | 79.8°F | 82.2°F | 81.8°F |
| Mobile | 79.7°F | 80.6°F | 81.3°F |
| St. Augustine | 79.7°F | 79.9°F | 80.4°F |
| Dauphin Island | 79.7°F | 83.1°F | 82.7°F |
| Jekyll Island | 79.4°F | 81.5°F | 80.8°F |
| Gulf Shores | 79.3°F | 82.8°F | 81.8°F |
| Santa Rosa Beach | 79.3°F | 82.0°F | 80.7°F |
| Orange Beach | 79.3°F | 83.1°F | 81.9°F |
| Kauai | 79.2°F | 77.9°F | 79.5°F |
| Princeville | 79.2°F | 78.0°F | 79.6°F |
| St. Simons Island | 79.1°F | 81.0°F | 80.4°F |
| Pensacola Beach | 79.1°F | 82.8°F | 81.9°F |
| Miramar Beach | 79.0°F | 82.0°F | 81.2°F |
| Oahu | 79.0°F | 80.1°F | 78.5°F |
| Destin | 78.8°F | 81.9°F | 81.2°F |
| Jacksonville | 78.7°F | 80.7°F | 80.1°F |
| Fort Walton Beach | 78.6°F | 81.7°F | 80.9°F |
| Amelia Island | 78.6°F | 81.0°F | 80.2°F |
| Wilmington Island | 78.0°F | 79.3°F | 79.0°F |
| Tybee Island | 77.6°F | 79.4°F | 79.1°F |
| Hilton Head Island | 77.6°F | 79.6°F | 79.6°F |
| Edisto Beach | 77.3°F | 79.2°F | 79.1°F |
| Kiawah Island | 76.8°F | 78.8°F | 78.7°F |
| Charleston | 76.6°F | 78.4°F | 78.2°F |
| Folly Beach | 76.5°F | 78.4°F | 78.2°F |
| Mount Pleasant | 76.5°F | 78.3°F | 78.4°F |
| Isle of Palms | 76.4°F | 78.2°F | 78.2°F |
| Pawleys Island | 75.0°F | 76.7°F | 75.8°F |
| North Myrtle Beach | 74.7°F | 77.1°F | 76.0°F |
| Bald Head Island | 74.7°F | 77.4°F | 77.2°F |
| Murrells Inlet | 74.7°F | 77.1°F | 75.9°F |
| Arcadian Shores | 74.6°F | 77.1°F | 75.8°F |
| Oak Island | 74.6°F | 77.3°F | 76.6°F |
| Myrtle Beach | 74.5°F | 77.1°F | 75.8°F |
| Carolina Beach | 73.1°F | 75.9°F | 74.6°F |
| Hatteras Island | 72.8°F | 73.8°F | 67.6°F |
| North Topsail Beach | 72.8°F | 74.9°F | 73.9°F |
| Wilmington | 72.6°F | 75.2°F | 73.7°F |
| Wrightsville Beach | 72.6°F | 74.9°F | 73.3°F |
| Outer Banks | 70.5°F | 73.0°F | 68.2°F |
| Washington | 69.2°F | 71.2°F | 73.5°F |
| Chesapeake | 68.9°F | 73.1°F | 72.1°F |
| Norfolk | 68.3°F | 72.3°F | 71.3°F |
| Kill Devil Hills | 67.9°F | 71.6°F | 69.4°F |
| Nags Head | 67.8°F | 71.6°F | 69.4°F |
| Saint Michaels | 66.5°F | 70.3°F | 70.9°F |
| Fremont | 66.2°F | 63.6°F | 64.5°F |
| San Jose | 66.2°F | 63.3°F | 64.3°F |
| San Diego | 66.2°F | 64.5°F | 64.7°F |
| Tangier Island | 66.0°F | 69.8°F | 69.0°F |
| Corolla | 66.0°F | 70.0°F | 68.6°F |
| Laguna Beach | 65.9°F | 65.6°F | 62.9°F |
| Chula Vista | 65.8°F | 64.2°F | 64.2°F |
| Baltimore | 65.6°F | 66.9°F | 68.5°F |
| Irvine | 65.5°F | 65.3°F | 62.7°F |
| Santa Catalina Island | 65.5°F | 64.1°F | 63.1°F |
| Newport Beach | 65.4°F | 64.9°F | 62.6°F |
| Virginia Beach | 65.3°F | 68.5°F | 68.0°F |
| Santa Ana | 65.1°F | 64.6°F | 62.3°F |
| New Castle | 64.9°F | 64.4°F | 66.2°F |
| Annapolis | 64.9°F | 68.1°F | 68.7°F |
| Beverly Hills | 64.8°F | 64.9°F | 61.7°F |
| Hollywood | 64.8°F | 64.9°F | 61.7°F |
| Santa Monica | 64.7°F | 64.9°F | 61.6°F |
| Wilmington | 64.7°F | 64.0°F | 65.8°F |
| Anaheim | 64.6°F | 64.0°F | 61.3°F |
| Los Angeles | 64.1°F | 64.5°F | 61.3°F |
| Long Beach | 63.3°F | 63.5°F | 60.1°F |
| Malibu | 63.0°F | 63.1°F | 59.7°F |
| Oakland | 62.1°F | 62.5°F | 59.2°F |
| Chincoteague | 61.9°F | 64.7°F | 62.0°F |
| Toledo | 61.9°F | 62.2°F | 66.6°F |
| Port Clinton | 61.3°F | 60.7°F | 63.8°F |
| Oxnard | 60.9°F | 60.6°F | 57.7°F |
| Santa Barbara | 60.4°F | 61.2°F | 58.3°F |
| Sandusky | 60.2°F | 60.3°F | 64.5°F |
| Lewes | 60.2°F | 61.1°F | 61.8°F |
| Sausalito | 60.1°F | 59.4°F | 58.7°F |
| Fenwick Island | 59.7°F | 61.5°F | 60.8°F |
| Dewey Beach | 59.7°F | 60.4°F | 61.3°F |
| Oshkosh | 59.6°F | 60.8°F | 62.9°F |
| Ocean City | 59.6°F | 61.9°F | 61.2°F |
| Bethany Beach | 59.5°F | 60.7°F | 60.8°F |
| South Bethany | 59.5°F | 60.7°F | 60.8°F |
| Rehoboth Beach | 59.4°F | 60.3°F | 61.1°F |
| San Francisco | 59.4°F | 59.4°F | 58.1°F |
| Brigantine | 58.6°F | 61.1°F | 59.5°F |
| Appleton | 58.3°F | 59.0°F | 61.4°F |
| Cape May | 58.3°F | 59.7°F | 60.0°F |
| Put in Bay | 58.2°F | 58.3°F | 62.4°F |
| Astoria | 58.0°F | 57.2°F | 56.2°F |
| Wildwood Crest | 57.8°F | 59.4°F | 59.9°F |
| Wildwood | 57.8°F | 59.4°F | 59.9°F |
| Jersey City | 57.8°F | 58.1°F | 60.4°F |
| New York | 57.7°F | 58.1°F | 60.2°F |
| Newark | 57.7°F | 58.1°F | 60.5°F |
| Atlantic City | 57.7°F | 60.2°F | 59.4°F |
| Ocean City | 57.6°F | 59.4°F | 59.7°F |
| Providence | 57.4°F | 58.4°F | 57.8°F |
| Sea Isle City | 57.3°F | 59.0°F | 58.7°F |
| Bristol | 57.3°F | 58.8°F | 57.8°F |
| Warwick | 57.2°F | 58.5°F | 58.1°F |
| Beach Haven | 56.6°F | 59.5°F | 58.0°F |
| Santa Cruz | 56.5°F | 55.6°F | 54.8°F |
| Cleveland | 56.2°F | 57.6°F | 60.5°F |
| New Bedford | 56.1°F | 57.1°F | 56.0°F |
| Green Bay | 56.0°F | 58.7°F | 60.0°F |
| Yonkers | 55.9°F | 57.8°F | 59.0°F |
| Falmouth | 55.8°F | 57.4°F | 55.2°F |
| Long Beach Island | 55.6°F | 58.6°F | 57.5°F |
| Dennis Port | 55.3°F | 54.5°F | 53.9°F |
| Monterey | 55.2°F | 55.3°F | 55.7°F |
| Bellingham | 55.2°F | 54.1°F | 53.1°F |
| Ocean Shores | 55.1°F | 54.9°F | 52.8°F |
| New Haven | 54.9°F | 55.1°F | 56.9°F |
| Chicago | 54.8°F | 52.3°F | 55.8°F |
| Evanston | 54.7°F | 52.6°F | 55.5°F |
| Yosemite | 54.7°F | 54.9°F | 54.9°F |
| Seaside | 54.7°F | 54.5°F | 53.0°F |
| South Lake Tahoe | 54.6°F | 51.6°F | 52.7°F |
| Cannon Beach | 54.6°F | 54.3°F | 53.1°F |
| Seaside Heights | 54.6°F | 57.4°F | 57.4°F |
| Stateline | 54.6°F | 51.5°F | 52.5°F |
| Whidbey Island | 54.6°F | 53.3°F | 52.7°F |
| Oak Park | 54.5°F | 52.1°F | 55.5°F |
| Edgartown | 54.4°F | 56.4°F | 54.0°F |
| Hampton Bays | 54.3°F | 54.3°F | 54.7°F |
| Milford | 54.3°F | 54.9°F | 56.7°F |
| Tacoma | 54.3°F | 52.3°F | 52.1°F |
| Newport | 54.2°F | 55.5°F | 55.9°F |
| Jamestown | 54.0°F | 55.3°F | 56.3°F |
| Norwalk | 54.0°F | 55.5°F | 57.4°F |
| Incline Village | 53.9°F | 51.4°F | 52.0°F |
| Stamford | 53.9°F | 55.8°F | 57.7°F |
| Rockaway Beach | 53.9°F | 54.6°F | 53.4°F |
| Lake Tahoe | 53.9°F | 50.8°F | 51.2°F |
| Martha's Vineyard | 53.8°F | 55.7°F | 53.3°F |
| Fire Island | 53.8°F | 54.9°F | 55.4°F |
| Bellevue | 53.7°F | 52.5°F | 52.5°F |
| Nantucket | 53.5°F | 53.6°F | 52.5°F |
| Cambridge | 53.5°F | 53.4°F | 54.3°F |
| Boston | 53.4°F | 53.3°F | 54.3°F |
| Pacific City | 53.2°F | 54.1°F | 52.6°F |
| Michigan City | 53.2°F | 53.5°F | 55.5°F |
| Erie | 53.0°F | 52.9°F | 56.6°F |
| Plymouth | 53.0°F | 51.9°F | 52.9°F |
| Florence | 52.2°F | 51.8°F | 51.1°F |
| Newport | 52.0°F | 53.4°F | 51.1°F |
| Old Saybrook | 51.9°F | 53.0°F | 54.2°F |
| Lincoln City | 51.8°F | 53.8°F | 52.0°F |
| Depoe Bay | 51.8°F | 53.6°F | 51.5°F |
| New London | 51.8°F | 52.6°F | 53.3°F |
| Groton | 51.7°F | 52.6°F | 53.2°F |
| Westbrook | 51.7°F | 52.8°F | 54.4°F |
| Siasconset | 51.6°F | 51.7°F | 50.9°F |
| Salem | 51.5°F | 51.2°F | 52.2°F |
| Charlestown | 51.3°F | 52.8°F | 52.8°F |
| South Haven | 51.3°F | 48.8°F | 57.6°F |
| Chatham | 51.1°F | 50.7°F | 50.8°F |
| Stonington | 50.9°F | 52.5°F | 53.0°F |
| Mystic | 50.9°F | 52.5°F | 53.0°F |
| Saugatuck | 50.8°F | 48.5°F | 53.9°F |
| Montauk | 50.7°F | 52.6°F | 52.3°F |
| Provincetown | 50.6°F | 49.9°F | 51.1°F |
| Westerly | 50.5°F | 52.2°F | 52.4°F |
| Buffalo | 50.4°F | 50.0°F | 55.9°F |
| Holland | 50.4°F | 48.1°F | 54.9°F |
| Block Island | 50.4°F | 52.3°F | 51.6°F |
| New Shoreham | 50.4°F | 52.3°F | 51.6°F |
| Port Angeles | 50.2°F | 49.0°F | 49.4°F |
| Freeport | 50.0°F | 49.5°F | 52.6°F |
| Brunswick | 49.7°F | 49.0°F | 52.1°F |
| Ketchikan | 49.6°F | 48.4°F | 49.4°F |
| Hampton | 49.6°F | 49.2°F | 52.0°F |
| Hampton Beach | 49.6°F | 49.2°F | 52.0°F |
| Portsmouth | 49.3°F | 48.6°F | 51.2°F |
| Niagara Falls | 49.2°F | 48.8°F | 54.6°F |
| York Beach | 49.0°F | 48.7°F | 51.6°F |
| Ogunquit | 48.8°F | 48.6°F | 51.4°F |
| Old Orchard Beach | 48.7°F | 48.4°F | 51.2°F |
| Wells | 48.5°F | 48.5°F | 51.2°F |
| Kennebunkport | 48.5°F | 48.4°F | 51.1°F |
| Camden | 48.1°F | 46.8°F | 50.3°F |
| Rockland | 47.7°F | 46.2°F | 49.0°F |
| Milwaukee | 47.2°F | 47.7°F | 51.0°F |
| Sturgeon Bay | 46.0°F | 47.0°F | 49.4°F |
| Mount Desert Island | 45.9°F | 45.7°F | 48.6°F |
| Sitka | 45.6°F | 47.2°F | 47.5°F |
| Bar Harbor | 45.5°F | 45.4°F | 48.1°F |
| Haines | 44.8°F | 44.8°F | 46.7°F |
| Seward | 44.3°F | 45.1°F | 44.7°F |
| Rochester | 43.8°F | 41.3°F | 53.2°F |
| Juneau | 43.7°F | 44.6°F | 46.5°F |
| Valdez | 43.2°F | 46.5°F | 47.0°F |
| Duluth | 41.8°F | 42.4°F | 43.4°F |
| Girdwood | 41.1°F | 43.4°F | 42.6°F |
| Homer | 40.8°F | 44.7°F | 43.3°F |
| Bayfield | 40.4°F | 42.8°F | 43.4°F |
| Traverse City | 40.1°F | 40.6°F | 47.5°F |
| Mackinac Island | 40.1°F | 43.0°F | 46.2°F |
| Petoskey | 39.9°F | 42.1°F | 47.8°F |
| Anchorage | 39.8°F | 44.4°F | 42.5°F |
| Harbor Springs | 39.8°F | 42.1°F | 47.7°F |
| Wasilla | 39.6°F | 44.1°F | 43.1°F |
| Marquette | 38.2°F | 38.8°F | 41.7°F |
| Charlevoix | 37.9°F | 38.4°F | 46.3°F |
| Kenai | 37.1°F | 42.1°F | 40.0°F |
| Grand Marais | 33.7°F | 35.0°F | 36.1°F |
| Kissimmee | 30.0°F | 30.0°F | 30.0°F |
| Lake Geneva | 30.0°F | 30.0°F | 30.0°F |
Please see following sea water temperature averages charts for the warmest USA resorts in May.
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
USA Resorts:
NAME
F°
| Boston |  |
+90 |
| Chicago | |
+76 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston |  |
+86 |
| Las Vegas | |
+92 |
| Los Angeles |  |
+70 |
| Maui | |
+70 |
| Miami | |
+82 |
| Miami Beach | |
+84 |
| New York | |
+94 |
| San Diego | |
+68 |
| San Francisco | |
+60 |
| Sarasota | |
+94 |
| Tampa | |
+90 |
