The USA resorts with the warmest sea water temperature at this moment are Key West, Houston and Islamorada.
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 |
August 2025 | September 2025 |
|---|---|---|---|
| Key West | 93.0°F | 93.1°F | 91.0°F |
| Houston | 92.6°F | 92.0°F | 88.7°F |
| Islamorada | 92.0°F | 93.1°F | 90.8°F |
| New Orleans | 91.6°F | 91.5°F | 88.1°F |
| Key Largo | 91.6°F | 93.0°F | 90.6°F |
| Everglades | 91.4°F | 93.1°F | 90.2°F |
| Marco Island | 91.2°F | 93.0°F | 90.0°F |
| Galveston Island | 91.2°F | 92.0°F | 89.5°F |
| Naples | 91.0°F | 93.0°F | 90.1°F |
| Avery Island | 91.0°F | 91.3°F | 88.5°F |
| Dauphin Island | 90.8°F | 90.8°F | 88.0°F |
| Pass Christian | 90.6°F | 90.8°F | 87.9°F |
| Sanibel Island | 90.4°F | 93.2°F | 89.6°F |
| Bay Saint Louis | 90.4°F | 90.7°F | 87.8°F |
| Long Beach | 90.4°F | 90.7°F | 87.8°F |
| Galveston | 90.4°F | 92.1°F | 89.4°F |
| Corpus Christi | 90.4°F | 91.2°F | 89.8°F |
| Ocean Springs | 90.2°F | 90.9°F | 87.8°F |
| Mobile | 90.0°F | 90.3°F | 87.8°F |
| Gulfport | 90.0°F | 90.7°F | 87.8°F |
| Biloxi | 90.0°F | 90.9°F | 87.7°F |
| Miami Beach | 89.8°F | 92.1°F | 90.2°F |
| Cape Coral | 89.8°F | 93.1°F | 89.1°F |
| Pensacola | 89.8°F | 90.6°F | 87.6°F |
| West Palm Beach | 89.8°F | 90.9°F | 90.2°F |
| St. George Island | 89.8°F | 90.5°F | 87.3°F |
| Hilton Head Island | 89.8°F | 88.9°F | 83.2°F |
| Miami | 89.6°F | 92.3°F | 89.7°F |
| Sarasota | 89.6°F | 92.9°F | 88.7°F |
| Siesta Key | 89.6°F | 92.8°F | 88.7°F |
| Tybee Island | 89.6°F | 88.3°F | 83.1°F |
| Hialeah | 89.6°F | 92.1°F | 89.8°F |
| Wilmington Island | 89.4°F | 88.1°F | 83.1°F |
| Santa Rosa Beach | 89.2°F | 89.9°F | 87.1°F |
| Clearwater Beach | 89.2°F | 92.8°F | 87.8°F |
| Fort Lauderdale | 89.2°F | 91.3°F | 90.4°F |
| Grand Isle | 89.2°F | 92.2°F | 89.1°F |
| Edisto Beach | 89.2°F | 88.2°F | 82.8°F |
| Miramar Beach | 89.0°F | 90.0°F | 86.9°F |
| Orange Beach | 89.0°F | 90.6°F | 87.8°F |
| Folly Beach | 89.0°F | 87.8°F | 82.2°F |
| Kiawah Island | 89.0°F | 87.9°F | 82.5°F |
| Pensacola Beach | 88.8°F | 90.6°F | 87.7°F |
| St. Petersburg | 88.8°F | 93.0°F | 87.9°F |
| Isle of Palms | 88.8°F | 87.5°F | 82.0°F |
| Tampa | 88.6°F | 92.9°F | 88.2°F |
| Charleston | 88.6°F | 87.9°F | 82.0°F |
| St. Simons Island | 88.6°F | 89.7°F | 84.1°F |
| Mount Pleasant | 88.6°F | 87.7°F | 81.9°F |
| Gulf Shores | 88.4°F | 90.8°F | 88.1°F |
| Destin | 88.4°F | 90.0°F | 86.8°F |
| Jekyll Island | 88.4°F | 89.7°F | 84.1°F |
| Panama City Beach | 88.2°F | 90.2°F | 87.1°F |
| South Padre Island | 88.2°F | 88.3°F | 90.0°F |
| Fort Walton Beach | 88.0°F | 89.9°F | 86.9°F |
| Port St. Lucie | 87.4°F | 89.4°F | 88.1°F |
| Myrtle Beach | 87.2°F | 86.8°F | 81.8°F |
| Murrells Inlet | 87.2°F | 86.9°F | 81.6°F |
| North Myrtle Beach | 87.0°F | 86.9°F | 81.7°F |
| Arcadian Shores | 87.0°F | 86.9°F | 81.7°F |
| Mustang Island | 87.0°F | 90.3°F | 90.0°F |
| Pawleys Island | 86.8°F | 86.9°F | 81.7°F |
| Oak Island | 86.6°F | 86.4°F | 81.6°F |
| Port Aransas | 86.6°F | 90.4°F | 89.7°F |
| Bald Head Island | 86.2°F | 85.8°F | 81.5°F |
| Orlando | 86.0°F | 88.7°F | 86.5°F |
| Amelia Island | 85.8°F | 89.0°F | 84.4°F |
| Carolina Beach | 85.8°F | 85.4°F | 81.2°F |
| Kailua Kona | 85.0°F | 84.3°F | 84.3°F |
| Jacksonville | 85.0°F | 88.8°F | 84.6°F |
| Daytona Beach | 85.0°F | 88.4°F | 86.3°F |
| Baltimore | 85.0°F | 83.6°F | 77.0°F |
| Wilmington | 85.0°F | 85.4°F | 81.1°F |
| St. Augustine | 84.8°F | 88.5°F | 85.3°F |
| Saint Michaels | 84.8°F | 84.0°F | 76.4°F |
| North Topsail Beach | 84.8°F | 85.3°F | 80.8°F |
| Wrightsville Beach | 84.8°F | 85.4°F | 81.0°F |
| Outer Banks | 84.6°F | 83.4°F | 78.1°F |
| Honolulu | 84.4°F | 84.2°F | 84.0°F |
| Tangier Island | 84.4°F | 83.3°F | 76.4°F |
| Hilo | 84.2°F | 83.2°F | 83.8°F |
| Hatteras Island | 84.2°F | 83.3°F | 78.2°F |
| Washington | 84.0°F | 84.9°F | 77.4°F |
| Hawaii | 83.8°F | 84.0°F | 83.9°F |
| Kauai | 83.8°F | 82.3°F | 85.0°F |
| Kihei | 83.8°F | 84.6°F | 84.5°F |
| Annapolis | 83.8°F | 83.5°F | 77.3°F |
| Princeville | 83.6°F | 82.5°F | 85.0°F |
| Wilmington | 83.2°F | 82.8°F | 76.0°F |
| New Castle | 83.2°F | 82.9°F | 76.2°F |
| Lanai | 83.2°F | 84.6°F | 84.5°F |
| Kahului | 83.0°F | 83.2°F | 83.6°F |
| Oahu | 83.0°F | 82.8°F | 83.2°F |
| Corolla | 83.0°F | 82.8°F | 77.4°F |
| Norfolk | 83.0°F | 83.1°F | 76.9°F |
| Chesapeake | 83.0°F | 83.2°F | 77.4°F |
| Cocoa Beach | 82.8°F | 90.9°F | 88.5°F |
| Molokai | 82.8°F | 83.4°F | 83.8°F |
| Maui | 82.6°F | 82.8°F | 83.2°F |
| Kill Devil Hills | 82.2°F | 83.0°F | 77.4°F |
| Virginia Beach | 81.6°F | 81.6°F | 76.4°F |
| Ocean City | 81.6°F | 79.6°F | 75.5°F |
| Fire Island | 81.6°F | 76.4°F | 72.6°F |
| Nags Head | 81.6°F | 83.0°F | 77.6°F |
| Chincoteague | 81.4°F | 80.1°F | 75.5°F |
| Port Clinton | 80.4°F | 79.6°F | 73.1°F |
| Seaside Heights | 79.8°F | 78.1°F | 73.5°F |
| Appleton | 79.6°F | 77.6°F | 69.4°F |
| Lewes | 79.4°F | 79.5°F | 75.0°F |
| Sea Isle City | 79.4°F | 78.8°F | 74.3°F |
| Brigantine | 79.4°F | 79.0°F | 73.8°F |
| Atlantic City | 79.2°F | 78.7°F | 74.0°F |
| Cleveland | 79.0°F | 78.0°F | 73.6°F |
| Put in Bay | 79.0°F | 79.8°F | 73.0°F |
| Sandusky | 79.0°F | 79.8°F | 73.3°F |
| Fenwick Island | 78.8°F | 78.5°F | 75.3°F |
| Long Beach Island | 78.8°F | 78.6°F | 73.8°F |
| Ocean City | 78.6°F | 78.7°F | 74.1°F |
| Beach Haven | 78.6°F | 78.9°F | 73.9°F |
| Erie | 78.6°F | 78.3°F | 71.7°F |
| Green Bay | 78.6°F | 76.2°F | 69.0°F |
| Newark | 78.4°F | 77.5°F | 73.6°F |
| Oshkosh | 78.4°F | 77.2°F | 69.7°F |
| New York | 78.2°F | 77.5°F | 73.5°F |
| Rehoboth Beach | 78.2°F | 79.3°F | 75.0°F |
| Dewey Beach | 78.2°F | 79.4°F | 75.2°F |
| Jersey City | 78.2°F | 77.6°F | 73.5°F |
| Hampton Bays | 78.2°F | 76.3°F | 72.3°F |
| Toledo | 78.2°F | 78.9°F | 72.5°F |
| San Diego | 77.4°F | 71.0°F | 69.3°F |
| Laguna Beach | 77.2°F | 73.5°F | 70.5°F |
| Bristol | 77.2°F | 75.8°F | 71.8°F |
| Santa Ana | 77.2°F | 72.7°F | 71.5°F |
| Chula Vista | 77.2°F | 70.7°F | 68.5°F |
| Newport Beach | 77.0°F | 72.8°F | 71.7°F |
| Bethany Beach | 77.0°F | 78.1°F | 75.2°F |
| South Bethany | 77.0°F | 78.1°F | 75.2°F |
| Warwick | 77.0°F | 75.8°F | 71.5°F |
| Yosemite | 76.8°F | 71.4°F | 67.3°F |
| New Haven | 76.8°F | 76.4°F | 72.8°F |
| Stamford | 76.8°F | 76.2°F | 73.6°F |
| Los Angeles | 76.6°F | 72.6°F | 72.9°F |
| Santa Catalina Island | 76.6°F | 71.9°F | 72.9°F |
| Buffalo | 76.6°F | 77.2°F | 69.9°F |
| Providence | 76.6°F | 75.6°F | 71.2°F |
| Irvine | 76.6°F | 72.9°F | 71.5°F |
| Falmouth | 76.4°F | 74.8°F | 71.8°F |
| Wildwood Crest | 76.4°F | 78.8°F | 74.6°F |
| Wildwood | 76.4°F | 78.8°F | 74.6°F |
| Milford | 76.2°F | 76.3°F | 73.2°F |
| New Bedford | 76.2°F | 75.1°F | 71.6°F |
| Beverly Hills | 75.8°F | 72.8°F | 72.6°F |
| Hollywood | 75.8°F | 72.8°F | 72.6°F |
| Santa Monica | 75.8°F | 72.8°F | 72.6°F |
| Norwalk | 75.8°F | 76.2°F | 73.5°F |
| Malibu | 75.4°F | 71.2°F | 71.7°F |
| Yonkers | 75.4°F | 76.6°F | 73.6°F |
| Michigan City | 74.6°F | 77.3°F | 70.8°F |
| Anaheim | 74.6°F | 72.2°F | 70.7°F |
| Petoskey | 74.4°F | 72.6°F | 66.8°F |
| Cape May | 74.4°F | 78.5°F | 74.7°F |
| Oxnard | 74.2°F | 68.0°F | 69.5°F |
| Westbrook | 74.0°F | 74.1°F | 71.9°F |
| Harbor Springs | 74.0°F | 72.7°F | 66.9°F |
| Old Saybrook | 73.6°F | 73.4°F | 71.3°F |
| Newport | 73.6°F | 73.2°F | 70.8°F |
| Edgartown | 73.4°F | 72.4°F | 70.2°F |
| Charlevoix | 73.4°F | 72.6°F | 66.5°F |
| Chicago | 73.2°F | 76.5°F | 66.7°F |
| Santa Barbara | 73.2°F | 68.0°F | 70.6°F |
| Rochester | 73.2°F | 76.1°F | 70.0°F |
| Nantucket | 73.0°F | 71.9°F | 69.7°F |
| Jamestown | 73.0°F | 73.0°F | 70.7°F |
| Long Beach | 72.8°F | 71.2°F | 69.4°F |
| Dennis Port | 72.8°F | 73.8°F | 70.5°F |
| Traverse City | 72.8°F | 74.9°F | 68.3°F |
| Montauk | 72.8°F | 72.2°F | 70.8°F |
| Charlestown | 72.8°F | 71.8°F | 70.1°F |
| South Lake Tahoe | 72.4°F | 70.2°F | 67.7°F |
| Groton | 72.4°F | 72.6°F | 70.8°F |
| New London | 72.4°F | 72.6°F | 70.9°F |
| Oak Park | 72.4°F | 76.5°F | 69.7°F |
| Fremont | 72.4°F | 69.2°F | 71.8°F |
| San Jose | 72.2°F | 68.9°F | 71.7°F |
| Evanston | 72.0°F | 76.5°F | 71.7°F |
| Stateline | 72.0°F | 70.1°F | 67.7°F |
| Martha's Vineyard | 71.8°F | 71.2°F | 69.9°F |
| Astoria | 71.8°F | 67.6°F | 64.4°F |
| Westerly | 71.6°F | 71.5°F | 70.2°F |
| Incline Village | 71.4°F | 70.0°F | 68.0°F |
| Milwaukee | 71.4°F | 73.5°F | 68.8°F |
| Siasconset | 71.2°F | 69.8°F | 68.0°F |
| Provincetown | 71.2°F | 68.7°F | 66.8°F |
| Lake Tahoe | 71.2°F | 69.6°F | 67.6°F |
| Stonington | 71.0°F | 71.9°F | 70.2°F |
| Mystic | 71.0°F | 71.9°F | 70.2°F |
| Mackinac Island | 71.0°F | 71.6°F | 63.3°F |
| Sturgeon Bay | 70.8°F | 72.2°F | 65.7°F |
| Block Island | 70.6°F | 71.1°F | 70.0°F |
| New Shoreham | 70.6°F | 71.1°F | 70.0°F |
| Chatham | 70.2°F | 69.8°F | 67.2°F |
| Cambridge | 70.0°F | 69.3°F | 65.4°F |
| Boston | 69.6°F | 69.2°F | 65.3°F |
| Niagara Falls | 69.4°F | 75.5°F | 68.2°F |
| Marquette | 69.0°F | 67.7°F | 63.0°F |
| Bayfield | 68.6°F | 69.2°F | 64.1°F |
| Oakland | 68.6°F | 67.9°F | 69.1°F |
| Plymouth | 68.4°F | 69.3°F | 66.1°F |
| Hampton | 67.8°F | 65.7°F | 62.9°F |
| Hampton Beach | 67.8°F | 65.7°F | 62.9°F |
| Freeport | 67.2°F | 66.7°F | 64.0°F |
| Brunswick | 66.8°F | 66.6°F | 63.5°F |
| Salem | 66.8°F | 67.1°F | 64.5°F |
| Portsmouth | 66.4°F | 64.8°F | 62.4°F |
| Ogunquit | 65.8°F | 65.7°F | 63.5°F |
| Duluth | 65.8°F | 69.4°F | 61.9°F |
| San Francisco | 65.4°F | 65.3°F | 66.4°F |
| Sausalito | 65.2°F | 65.3°F | 66.3°F |
| Saugatuck | 65.2°F | 72.9°F | 69.5°F |
| York Beach | 65.0°F | 65.6°F | 63.3°F |
| Wells | 64.8°F | 65.7°F | 63.5°F |
| Old Orchard Beach | 64.2°F | 65.6°F | 63.2°F |
| Kennebunkport | 64.0°F | 65.7°F | 63.5°F |
| Holland | 62.8°F | 71.5°F | 69.5°F |
| Bellingham | 62.8°F | 62.3°F | 60.9°F |
| Newport | 62.6°F | 56.0°F | 55.4°F |
| Camden | 62.4°F | 63.9°F | 62.6°F |
| Mount Desert Island | 62.0°F | 61.4°F | 59.6°F |
| South Haven | 62.0°F | 74.3°F | 70.5°F |
| Ocean Shores | 62.0°F | 60.2°F | 59.5°F |
| Bar Harbor | 61.2°F | 60.8°F | 59.4°F |
| Santa Cruz | 60.8°F | 60.2°F | 62.5°F |
| Tacoma | 60.8°F | 60.9°F | 59.5°F |
| Whidbey Island | 60.0°F | 60.6°F | 59.4°F |
| Rockland | 59.8°F | 61.9°F | 61.4°F |
| Bellevue | 58.8°F | 59.2°F | 58.1°F |
| Ketchikan | 58.6°F | 60.6°F | 57.8°F |
| Cannon Beach | 58.0°F | 58.0°F | 55.4°F |
| Seaside | 57.8°F | 58.1°F | 56.2°F |
| Pacific City | 57.8°F | 55.4°F | 55.0°F |
| Monterey | 57.6°F | 60.7°F | 61.9°F |
| Juneau | 57.6°F | 56.7°F | 53.8°F |
| Anchorage | 57.2°F | 58.7°F | 54.3°F |
| Sitka | 56.2°F | 58.8°F | 55.3°F |
| Rockaway Beach | 55.8°F | 54.8°F | 53.8°F |
| Depoe Bay | 55.8°F | 55.3°F | 55.5°F |
| Kenai | 55.6°F | 57.5°F | 54.6°F |
| Florence | 55.2°F | 54.5°F | 54.5°F |
| Girdwood | 55.0°F | 53.1°F | 51.6°F |
| Lincoln City | 54.8°F | 54.9°F | 55.1°F |
| Valdez | 54.4°F | 55.8°F | 52.2°F |
| Seward | 53.6°F | 56.6°F | 54.5°F |
| Haines | 53.4°F | 55.1°F | 52.2°F |
| Grand Marais | 52.2°F | 62.5°F | 59.5°F |
| Port Angeles | 51.8°F | 52.6°F | 52.2°F |
| Wasilla | 51.4°F | 52.6°F | 51.4°F |
| Homer | 50.8°F | 54.6°F | 52.0°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 |  |
+94 |
| Chicago | |
+82 |
| Hawaii |  |
+82 |
| Houston | |
+102 |
| Las Vegas | |
+124 |
| Los Angeles | |
+92 |
| Maui | |
+78 |
| Miami | |
+92 |
| Myrtle Beach |  |
+84 |
| New York | |
+84 |
| San Diego | |
+80 |
| San Francisco | |
+62 |
| Santa Monica | |
+80 |
| Sarasota | |
+92 |
| Washington | |
+88 |
