The USA resorts with the warmest sea water temperature at this moment are Key West, Grand Isle and Sarasota.
Below you can see a list of all popular USA resorts and information about current sea water temperature and averages for current and next months.
| Resort Name | Current Sea Water Temperature |
September 2025 | October 2025 |
|---|---|---|---|
| Key West | 92.8°F | 91.0°F | 87.5°F |
| Grand Isle | 92.2°F | 89.1°F | 83.5°F |
| Sarasota | 92.0°F | 88.7°F | 83.6°F |
| Marco Island | 92.0°F | 90.0°F | 85.6°F |
| Sanibel Island | 92.0°F | 89.6°F | 85.1°F |
| Siesta Key | 92.0°F | 88.7°F | 83.8°F |
| Islamorada | 92.0°F | 90.8°F | 86.8°F |
| Cape Coral | 91.8°F | 89.1°F | 84.5°F |
| Key Largo | 91.8°F | 90.6°F | 86.7°F |
| Naples | 91.8°F | 90.1°F | 85.5°F |
| Avery Island | 91.8°F | 88.5°F | 81.7°F |
| Tampa | 91.6°F | 88.2°F | 82.7°F |
| West Palm Beach | 91.6°F | 90.2°F | 87.2°F |
| Galveston Island | 91.6°F | 89.5°F | 84.5°F |
| St. Petersburg | 91.4°F | 87.9°F | 82.7°F |
| Long Beach | 91.4°F | 87.8°F | 81.0°F |
| Galveston | 91.4°F | 89.4°F | 84.3°F |
| Houston | 91.2°F | 88.7°F | 83.8°F |
| Gulf Shores | 91.2°F | 88.1°F | 82.1°F |
| Clearwater Beach | 91.2°F | 87.8°F | 82.1°F |
| Pass Christian | 91.2°F | 87.9°F | 80.8°F |
| Corpus Christi | 91.2°F | 89.8°F | 85.8°F |
| Miami Beach | 91.0°F | 90.2°F | 87.1°F |
| New Orleans | 91.0°F | 88.1°F | 80.8°F |
| Gulfport | 91.0°F | 87.8°F | 82.0°F |
| Dauphin Island | 90.8°F | 88.0°F | 81.0°F |
| Orange Beach | 90.8°F | 87.8°F | 81.8°F |
| Pensacola Beach | 90.8°F | 87.7°F | 82.3°F |
| Fort Lauderdale | 90.8°F | 90.4°F | 87.2°F |
| Biloxi | 90.8°F | 87.7°F | 80.6°F |
| Ocean Springs | 90.8°F | 87.8°F | 80.6°F |
| Port Aransas | 90.8°F | 89.7°F | 85.9°F |
| Mustang Island | 90.8°F | 90.0°F | 86.1°F |
| Mobile | 90.6°F | 87.8°F | 81.2°F |
| Pensacola | 90.6°F | 87.6°F | 81.1°F |
| Bay Saint Louis | 90.6°F | 87.8°F | 80.9°F |
| Everglades | 90.4°F | 90.2°F | 86.1°F |
| St. George Island | 90.4°F | 87.3°F | 80.7°F |
| Hialeah | 90.4°F | 89.8°F | 86.6°F |
| Miami | 90.2°F | 89.7°F | 86.4°F |
| Miramar Beach | 90.2°F | 86.9°F | 82.3°F |
| Panama City Beach | 90.2°F | 87.1°F | 82.5°F |
| Destin | 90.2°F | 86.8°F | 82.3°F |
| Fort Walton Beach | 90.2°F | 86.9°F | 82.5°F |
| Santa Rosa Beach | 90.0°F | 87.1°F | 82.2°F |
| Cocoa Beach | 89.6°F | 88.5°F | 82.4°F |
| Jekyll Island | 89.4°F | 84.1°F | 77.4°F |
| Kiawah Island | 89.4°F | 82.5°F | 75.0°F |
| St. Simons Island | 89.2°F | 84.1°F | 77.2°F |
| Edisto Beach | 89.2°F | 82.8°F | 74.9°F |
| Port St. Lucie | 88.8°F | 88.1°F | 83.5°F |
| Amelia Island | 88.6°F | 84.4°F | 78.2°F |
| Tybee Island | 88.6°F | 83.1°F | 75.7°F |
| Folly Beach | 88.6°F | 82.2°F | 74.7°F |
| Hilton Head Island | 88.6°F | 83.2°F | 75.4°F |
| Jacksonville | 88.4°F | 84.6°F | 78.7°F |
| Isle of Palms | 88.4°F | 82.0°F | 74.6°F |
| Wilmington Island | 88.2°F | 83.1°F | 75.5°F |
| Mount Pleasant | 88.0°F | 81.9°F | 74.6°F |
| Orlando | 87.8°F | 86.5°F | 81.6°F |
| Charleston | 87.8°F | 82.0°F | 74.6°F |
| St. Augustine | 87.8°F | 85.3°F | 80.1°F |
| Daytona Beach | 87.6°F | 86.3°F | 81.5°F |
| North Myrtle Beach | 87.6°F | 81.7°F | 74.3°F |
| Bald Head Island | 87.4°F | 81.5°F | 74.1°F |
| Myrtle Beach | 87.4°F | 81.8°F | 74.6°F |
| Murrells Inlet | 87.4°F | 81.6°F | 74.5°F |
| Oak Island | 87.2°F | 81.6°F | 74.5°F |
| Arcadian Shores | 87.2°F | 81.7°F | 74.4°F |
| Pawleys Island | 87.2°F | 81.7°F | 74.8°F |
| South Padre Island | 87.2°F | 90.0°F | 87.8°F |
| Kailua Kona | 86.0°F | 84.3°F | 84.3°F |
| Carolina Beach | 86.0°F | 81.2°F | 74.4°F |
| North Topsail Beach | 85.8°F | 80.8°F | 74.2°F |
| Hatteras Island | 85.4°F | 78.2°F | 72.7°F |
| Wilmington | 85.4°F | 81.1°F | 74.3°F |
| Wrightsville Beach | 85.4°F | 81.0°F | 74.4°F |
| Honolulu | 84.8°F | 84.0°F | 84.1°F |
| Hawaii | 84.6°F | 83.9°F | 84.0°F |
| Hilo | 84.6°F | 83.8°F | 83.7°F |
| Kihei | 84.6°F | 84.5°F | 84.2°F |
| Molokai | 84.6°F | 83.8°F | 83.9°F |
| Lanai | 84.6°F | 84.5°F | 84.4°F |
| Washington | 84.2°F | 77.4°F | 68.5°F |
| Kahului | 84.2°F | 83.6°F | 83.5°F |
| Oahu | 84.2°F | 83.2°F | 83.1°F |
| Outer Banks | 84.2°F | 78.1°F | 71.7°F |
| Corolla | 84.0°F | 77.4°F | 69.1°F |
| Norfolk | 84.0°F | 76.9°F | 66.9°F |
| Maui | 83.8°F | 83.2°F | 83.2°F |
| Nags Head | 83.8°F | 77.6°F | 70.2°F |
| Tangier Island | 83.6°F | 76.4°F | 68.3°F |
| Kauai | 83.2°F | 85.0°F | 84.8°F |
| Princeville | 83.2°F | 85.0°F | 84.8°F |
| Kill Devil Hills | 83.2°F | 77.4°F | 69.9°F |
| Chesapeake | 83.2°F | 77.4°F | 66.0°F |
| Annapolis | 83.0°F | 77.3°F | 68.1°F |
| Virginia Beach | 82.8°F | 76.4°F | 68.9°F |
| Saint Michaels | 82.6°F | 76.4°F | 67.4°F |
| Baltimore | 82.2°F | 77.0°F | 69.1°F |
| New Castle | 81.2°F | 76.2°F | 68.0°F |
| Chincoteague | 81.2°F | 75.5°F | 67.4°F |
| Wilmington | 81.0°F | 76.0°F | 67.8°F |
| Ocean City | 79.4°F | 75.5°F | 68.2°F |
| Lewes | 79.2°F | 75.0°F | 67.5°F |
| Sea Isle City | 79.2°F | 74.3°F | 67.7°F |
| Fenwick Island | 79.0°F | 75.3°F | 67.8°F |
| Dewey Beach | 79.0°F | 75.2°F | 67.6°F |
| Ocean City | 79.0°F | 74.1°F | 67.0°F |
| Wildwood Crest | 79.0°F | 74.6°F | 67.7°F |
| Wildwood | 79.0°F | 74.6°F | 67.7°F |
| Rehoboth Beach | 78.8°F | 75.0°F | 67.7°F |
| Bethany Beach | 78.6°F | 75.2°F | 67.7°F |
| South Bethany | 78.6°F | 75.2°F | 67.7°F |
| Cape May | 78.6°F | 74.7°F | 67.6°F |
| Brigantine | 78.6°F | 73.8°F | 66.2°F |
| Atlantic City | 78.4°F | 74.0°F | 66.7°F |
| Beach Haven | 78.0°F | 73.9°F | 66.7°F |
| Laguna Beach | 77.8°F | 70.5°F | 67.2°F |
| Long Beach Island | 77.8°F | 73.8°F | 66.8°F |
| Seaside Heights | 77.8°F | 73.5°F | 67.1°F |
| Newport Beach | 77.2°F | 71.7°F | 68.0°F |
| Put in Bay | 77.2°F | 73.0°F | 66.6°F |
| Sandusky | 77.2°F | 73.3°F | 65.9°F |
| Irvine | 77.2°F | 71.5°F | 67.8°F |
| Jersey City | 77.0°F | 73.5°F | 66.5°F |
| Anaheim | 77.0°F | 70.7°F | 67.2°F |
| Santa Ana | 77.0°F | 71.5°F | 67.8°F |
| New York | 76.8°F | 73.5°F | 66.6°F |
| Los Angeles | 76.8°F | 72.9°F | 67.8°F |
| Newark | 76.8°F | 73.6°F | 66.5°F |
| Cleveland | 76.8°F | 73.6°F | 66.8°F |
| Beverly Hills | 76.6°F | 72.6°F | 67.8°F |
| Hollywood | 76.6°F | 72.6°F | 67.8°F |
| Santa Monica | 76.6°F | 72.6°F | 67.7°F |
| Yonkers | 76.6°F | 73.6°F | 66.7°F |
| Port Clinton | 76.4°F | 73.1°F | 64.6°F |
| San Diego | 76.2°F | 69.3°F | 67.5°F |
| Stamford | 76.2°F | 73.6°F | 67.8°F |
| Chula Vista | 76.2°F | 68.5°F | 66.6°F |
| Norwalk | 76.0°F | 73.5°F | 67.4°F |
| Erie | 76.0°F | 71.7°F | 65.6°F |
| Toledo | 75.8°F | 72.5°F | 64.2°F |
| Malibu | 75.4°F | 71.7°F | 66.5°F |
| Long Beach | 75.2°F | 69.4°F | 66.4°F |
| Milford | 75.2°F | 73.2°F | 67.0°F |
| Fire Island | 75.0°F | 72.6°F | 67.3°F |
| Buffalo | 75.0°F | 69.9°F | 64.6°F |
| New Haven | 74.8°F | 72.8°F | 66.0°F |
| Hampton Bays | 74.8°F | 72.3°F | 66.0°F |
| Santa Catalina Island | 74.6°F | 72.9°F | 70.0°F |
| Santa Barbara | 73.8°F | 70.6°F | 66.9°F |
| Falmouth | 73.8°F | 71.8°F | 64.8°F |
| Warwick | 73.8°F | 71.5°F | 64.3°F |
| New Bedford | 73.6°F | 71.6°F | 64.5°F |
| Providence | 73.6°F | 71.2°F | 64.1°F |
| Bristol | 73.6°F | 71.8°F | 64.4°F |
| Westbrook | 73.4°F | 71.9°F | 67.1°F |
| Rochester | 73.2°F | 70.0°F | 62.7°F |
| Old Saybrook | 72.8°F | 71.3°F | 66.8°F |
| Appleton | 72.8°F | 69.4°F | 62.4°F |
| Dennis Port | 72.4°F | 70.5°F | 61.8°F |
| Green Bay | 72.4°F | 69.0°F | 61.8°F |
| Groton | 72.2°F | 70.8°F | 66.7°F |
| New London | 72.2°F | 70.9°F | 66.7°F |
| Montauk | 72.2°F | 70.8°F | 66.3°F |
| Oxnard | 72.2°F | 69.5°F | 66.1°F |
| Saugatuck | 72.0°F | 69.5°F | 62.6°F |
| Traverse City | 71.8°F | 68.3°F | 62.2°F |
| Jamestown | 71.8°F | 70.7°F | 65.4°F |
| Oshkosh | 71.8°F | 69.7°F | 62.3°F |
| Nantucket | 71.6°F | 69.7°F | 62.2°F |
| Holland | 71.6°F | 69.5°F | 62.3°F |
| Newport | 71.6°F | 70.8°F | 65.5°F |
| Niagara Falls | 71.4°F | 68.2°F | 63.8°F |
| Edgartown | 71.2°F | 70.2°F | 64.0°F |
| Charlevoix | 71.2°F | 66.5°F | 62.5°F |
| Petoskey | 71.2°F | 66.8°F | 62.3°F |
| Harbor Springs | 71.0°F | 66.9°F | 62.4°F |
| Block Island | 71.0°F | 70.0°F | 66.0°F |
| New Shoreham | 71.0°F | 70.0°F | 66.0°F |
| Stonington | 70.8°F | 70.2°F | 66.1°F |
| Mystic | 70.8°F | 70.2°F | 66.1°F |
| Westerly | 70.8°F | 70.2°F | 66.4°F |
| Charlestown | 70.8°F | 70.1°F | 66.0°F |
| San Jose | 70.6°F | 71.7°F | 66.6°F |
| Martha's Vineyard | 70.6°F | 69.9°F | 64.4°F |
| Fremont | 70.6°F | 71.8°F | 66.7°F |
| Chicago | 70.2°F | 66.7°F | 54.6°F |
| South Haven | 70.0°F | 70.5°F | 62.3°F |
| Siasconset | 69.4°F | 68.0°F | 60.8°F |
| Oak Park | 69.0°F | 69.7°F | 60.3°F |
| Yosemite | 68.8°F | 67.3°F | 57.7°F |
| Oakland | 68.8°F | 69.1°F | 67.2°F |
| Chatham | 68.2°F | 67.2°F | 60.0°F |
| Evanston | 68.0°F | 71.7°F | 63.9°F |
| Michigan City | 68.0°F | 70.8°F | 62.9°F |
| Sturgeon Bay | 68.0°F | 65.7°F | 60.5°F |
| Provincetown | 67.6°F | 66.8°F | 59.5°F |
| Cambridge | 67.4°F | 65.4°F | 59.8°F |
| San Francisco | 67.2°F | 66.4°F | 65.4°F |
| Boston | 67.2°F | 65.3°F | 59.8°F |
| Sausalito | 67.2°F | 66.3°F | 64.7°F |
| Plymouth | 66.6°F | 66.1°F | 59.7°F |
| Astoria | 65.6°F | 64.4°F | 60.3°F |
| Mackinac Island | 65.4°F | 63.3°F | 59.0°F |
| Salem | 65.0°F | 64.5°F | 59.6°F |
| Incline Village | 64.8°F | 68.0°F | 60.4°F |
| Milwaukee | 64.8°F | 68.8°F | 61.6°F |
| Marquette | 64.4°F | 63.0°F | 57.7°F |
| Hampton | 64.2°F | 62.9°F | 58.8°F |
| Portsmouth | 64.2°F | 62.4°F | 58.9°F |
| Hampton Beach | 64.2°F | 62.9°F | 58.8°F |
| Lake Tahoe | 64.0°F | 67.6°F | 60.3°F |
| South Lake Tahoe | 63.8°F | 67.7°F | 60.3°F |
| Duluth | 63.8°F | 61.9°F | 57.6°F |
| Stateline | 63.8°F | 67.7°F | 60.3°F |
| Wells | 63.0°F | 63.5°F | 57.8°F |
| Bayfield | 63.0°F | 64.1°F | 57.3°F |
| Ogunquit | 62.6°F | 63.5°F | 58.0°F |
| Kennebunkport | 62.6°F | 63.5°F | 57.6°F |
| Freeport | 62.6°F | 64.0°F | 57.4°F |
| Old Orchard Beach | 62.4°F | 63.2°F | 57.1°F |
| Brunswick | 62.2°F | 63.5°F | 57.0°F |
| Santa Cruz | 62.0°F | 62.5°F | 61.9°F |
| York Beach | 62.0°F | 63.3°F | 58.4°F |
| Ocean Shores | 61.8°F | 59.5°F | 56.5°F |
| Camden | 60.4°F | 62.6°F | 57.1°F |
| Seaside | 60.0°F | 56.2°F | 56.5°F |
| Monterey | 59.8°F | 61.9°F | 62.2°F |
| Rockland | 59.6°F | 61.4°F | 56.9°F |
| Rockaway Beach | 59.4°F | 53.8°F | 56.0°F |
| Cannon Beach | 59.4°F | 55.4°F | 56.5°F |
| Newport | 59.4°F | 55.4°F | 56.3°F |
| Depoe Bay | 59.0°F | 55.5°F | 56.1°F |
| Pacific City | 58.4°F | 55.0°F | 56.3°F |
| Lincoln City | 58.2°F | 55.1°F | 56.0°F |
| Florence | 57.8°F | 54.5°F | 55.0°F |
| Bellevue | 57.8°F | 58.1°F | 55.8°F |
| Mount Desert Island | 57.6°F | 59.6°F | 55.5°F |
| Tacoma | 57.6°F | 59.5°F | 55.2°F |
| Bar Harbor | 57.4°F | 59.4°F | 55.4°F |
| Ketchikan | 57.2°F | 57.8°F | 52.5°F |
| Whidbey Island | 57.2°F | 59.4°F | 54.6°F |
| Bellingham | 56.0°F | 60.9°F | 53.1°F |
| Grand Marais | 55.6°F | 59.5°F | 54.2°F |
| Anchorage | 54.6°F | 54.3°F | 46.4°F |
| Sitka | 54.0°F | 55.3°F | 50.7°F |
| Seward | 53.8°F | 54.5°F | 50.5°F |
| Kenai | 53.6°F | 54.6°F | 49.2°F |
| Juneau | 52.6°F | 53.8°F | 46.3°F |
| Port Angeles | 52.2°F | 52.2°F | 50.5°F |
| Haines | 51.4°F | 52.2°F | 47.2°F |
| Homer | 50.6°F | 52.0°F | 49.5°F |
| Valdez | 50.6°F | 52.2°F | 47.9°F |
| Girdwood | 49.0°F | 51.6°F | 46.0°F |
| Wasilla | 43.8°F | 51.4°F | 45.0°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 for more details.
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 |  |
+62 |
| Chicago |  |
+66 |
| Hawaii |  |
+80 |
| Las Vegas |  |
+80 |
| Los Angeles | |
+72 |
| Maui |  |
+66 |
| Miami |  |
+88 |
| Myrtle Beach | |
+78 |
| New York | |
+66 |
| Panama City Beach | |
+90 |
| San Diego | |
+70 |
| San Francisco | |
+60 |
| Santa Monica | |
+72 |
| Sarasota | |
+86 |
| Washington |  |
+66 |
