The USA resorts with the warmest sea water temperature in August are Key West, Everglades and Marco Island.
Below you can see a list of all popular USA resorts and information about sea water temperature in August for the last two years.
| Resort Name | August 2026 | August 2025 | August 2024 |
|---|---|---|---|
| Key West | 93.1°F | 93.1°F | 92.0°F |
| Everglades | 92.8°F | 93.1°F | 91.1°F |
| Marco Island | 92.7°F | 93.0°F | 91.2°F |
| Islamorada | 92.7°F | 93.1°F | 91.5°F |
| Key Largo | 92.6°F | 93.0°F | 91.5°F |
| Naples | 92.3°F | 93.0°F | 91.1°F |
| New Orleans | 92.3°F | 91.5°F | 92.3°F |
| Sanibel Island | 92.2°F | 93.2°F | 91.4°F |
| Houston | 92.0°F | 92.0°F | 92.2°F |
| Grand Isle | 91.9°F | 92.2°F | 93.7°F |
| Avery Island | 91.9°F | 91.3°F | 92.3°F |
| Cape Coral | 91.8°F | 93.1°F | 90.9°F |
| Ocean Springs | 91.6°F | 90.9°F | 91.6°F |
| Biloxi | 91.5°F | 90.9°F | 91.6°F |
| Mobile | 91.5°F | 90.3°F | 91.1°F |
| Miami | 91.5°F | 92.3°F | 90.4°F |
| Galveston | 91.4°F | 92.1°F | 92.5°F |
| Gulfport | 91.4°F | 90.7°F | 91.4°F |
| Long Beach | 91.4°F | 90.7°F | 91.5°F |
| Pass Christian | 91.4°F | 90.8°F | 91.7°F |
| Galveston Island | 91.3°F | 92.0°F | 92.8°F |
| Dauphin Island | 91.3°F | 90.8°F | 92.0°F |
| Bay Saint Louis | 91.3°F | 90.7°F | 91.7°F |
| Hialeah | 91.2°F | 92.1°F | 90.3°F |
| Miami Beach | 91.2°F | 92.1°F | 90.5°F |
| Sarasota | 91.2°F | 92.9°F | 91.4°F |
| Siesta Key | 91.2°F | 92.8°F | 91.4°F |
| Pensacola | 91.0°F | 90.6°F | 91.3°F |
| Clearwater Beach | 90.9°F | 92.8°F | 91.1°F |
| Tampa | 90.9°F | 92.9°F | 90.5°F |
| Fort Lauderdale | 90.9°F | 91.3°F | 89.8°F |
| St. Petersburg | 90.8°F | 93.0°F | 91.0°F |
| St. George Island | 90.8°F | 90.5°F | 90.9°F |
| Corpus Christi | 90.6°F | 91.2°F | 92.1°F |
| West Palm Beach | 90.5°F | 90.9°F | 90.3°F |
| Pensacola Beach | 90.5°F | 90.6°F | 91.5°F |
| Orange Beach | 90.4°F | 90.6°F | 91.5°F |
| Panama City Beach | 90.3°F | 90.2°F | 90.9°F |
| Gulf Shores | 90.2°F | 90.8°F | 91.7°F |
| Hilton Head Island | 90.2°F | 88.9°F | 87.8°F |
| Chesapeake | 90.2°F | 83.2°F | 83.0°F |
| Santa Rosa Beach | 90.2°F | 89.9°F | 90.9°F |
| Miramar Beach | 90.1°F | 90.0°F | 91.0°F |
| Tybee Island | 90.0°F | 88.3°F | 87.8°F |
| Destin | 90.0°F | 90.0°F | 91.0°F |
| Wilmington Island | 90.0°F | 88.1°F | 87.7°F |
| Edisto Beach | 89.9°F | 88.2°F | 87.4°F |
| Fort Walton Beach | 89.8°F | 89.9°F | 90.9°F |
| Kiawah Island | 89.7°F | 87.9°F | 87.3°F |
| Folly Beach | 89.4°F | 87.8°F | 87.0°F |
| Charleston | 89.3°F | 87.9°F | 86.7°F |
| Port St. Lucie | 89.2°F | 89.4°F | 88.3°F |
| Port Aransas | 89.2°F | 90.4°F | 92.0°F |
| St. Simons Island | 89.1°F | 89.7°F | 87.9°F |
| Jekyll Island | 89.1°F | 89.7°F | 87.9°F |
| Mount Pleasant | 89.1°F | 87.7°F | 86.6°F |
| Isle of Palms | 89.0°F | 87.5°F | 86.6°F |
| Mustang Island | 88.8°F | 90.3°F | 92.0°F |
| Bald Head Island | 88.8°F | 85.8°F | 86.1°F |
| Oak Island | 88.5°F | 86.4°F | 86.4°F |
| South Padre Island | 87.9°F | 88.3°F | 90.6°F |
| Norfolk | 87.7°F | 83.1°F | 82.1°F |
| North Myrtle Beach | 87.7°F | 86.9°F | 86.1°F |
| Murrells Inlet | 87.5°F | 86.9°F | 86.1°F |
| Cocoa Beach | 87.4°F | 90.9°F | 88.4°F |
| Myrtle Beach | 87.4°F | 86.8°F | 86.1°F |
| Arcadian Shores | 87.4°F | 86.9°F | 86.1°F |
| Pawleys Island | 86.8°F | 86.9°F | 85.8°F |
| Carolina Beach | 86.7°F | 85.4°F | 85.1°F |
| Orlando | 86.5°F | 88.7°F | 87.1°F |
| Washington | 86.4°F | 84.9°F | 84.8°F |
| Amelia Island | 86.3°F | 89.0°F | 86.4°F |
| Outer Banks | 86.2°F | 83.4°F | 82.7°F |
| North Topsail Beach | 86.2°F | 85.3°F | 85.0°F |
| Tangier Island | 86.1°F | 83.3°F | 83.8°F |
| Saint Michaels | 86.1°F | 84.0°F | 84.2°F |
| Wilmington | 86.0°F | 85.4°F | 84.8°F |
| Wrightsville Beach | 85.8°F | 85.4°F | 84.8°F |
| Jacksonville | 85.8°F | 88.8°F | 86.6°F |
| Hatteras Island | 85.7°F | 83.3°F | 82.9°F |
| St. Augustine | 85.6°F | 88.5°F | 86.6°F |
| Daytona Beach | 85.6°F | 88.4°F | 86.8°F |
| Kill Devil Hills | 85.6°F | 83.0°F | 81.6°F |
| Nags Head | 85.6°F | 83.0°F | 81.8°F |
| Kailua Kona | 85.3°F | 84.3°F | 84.2°F |
| Annapolis | 85.0°F | 83.5°F | 84.0°F |
| Corolla | 84.8°F | 82.8°F | 81.0°F |
| Baltimore | 84.5°F | 83.6°F | 82.9°F |
| Hilo | 84.5°F | 83.2°F | 83.0°F |
| Honolulu | 84.4°F | 84.2°F | 83.2°F |
| Kihei | 84.4°F | 84.6°F | 83.3°F |
| Hawaii | 84.3°F | 84.0°F | 83.1°F |
| Lanai | 84.0°F | 84.6°F | 83.4°F |
| New Castle | 83.9°F | 82.9°F | 82.9°F |
| Kauai | 83.7°F | 82.3°F | 81.8°F |
| Molokai | 83.7°F | 83.4°F | 82.8°F |
| Wilmington | 83.7°F | 82.8°F | 82.6°F |
| Oahu | 83.7°F | 82.8°F | 82.0°F |
| Princeville | 83.6°F | 82.5°F | 81.7°F |
| Kahului | 83.3°F | 83.2°F | 82.6°F |
| Maui | 82.9°F | 82.8°F | 82.4°F |
| Virginia Beach | 82.6°F | 81.6°F | 78.6°F |
| Chincoteague | 82.4°F | 80.1°F | 78.1°F |
| Ocean City | 81.0°F | 79.6°F | 77.7°F |
| Lewes | 80.8°F | 79.5°F | 77.8°F |
| Long Beach Island | 80.7°F | 78.6°F | 77.8°F |
| Beach Haven | 80.5°F | 78.9°F | 77.6°F |
| Dewey Beach | 80.4°F | 79.4°F | 77.0°F |
| Brigantine | 80.3°F | 79.0°F | 76.6°F |
| Port Clinton | 80.2°F | 79.6°F | 79.5°F |
| Rehoboth Beach | 80.1°F | 79.3°F | 76.8°F |
| Seaside Heights | 80.1°F | 78.1°F | 78.5°F |
| Atlantic City | 79.9°F | 78.7°F | 75.9°F |
| Sandusky | 79.8°F | 79.8°F | 79.8°F |
| Fenwick Island | 79.8°F | 78.5°F | 74.1°F |
| Wildwood Crest | 79.5°F | 78.8°F | 75.2°F |
| Wildwood | 79.5°F | 78.8°F | 75.2°F |
| Ocean City | 79.5°F | 78.7°F | 75.7°F |
| Cleveland | 79.5°F | 78.0°F | 78.8°F |
| Put in Bay | 79.5°F | 79.8°F | 79.6°F |
| Fire Island | 79.4°F | 76.4°F | 76.7°F |
| Erie | 79.4°F | 78.3°F | 77.3°F |
| Toledo | 79.2°F | 78.9°F | 79.7°F |
| Cape May | 79.0°F | 78.5°F | 74.8°F |
| Sea Isle City | 79.0°F | 78.8°F | 74.9°F |
| Bethany Beach | 78.6°F | 78.1°F | 73.1°F |
| South Bethany | 78.6°F | 78.1°F | 73.1°F |
| Hampton Bays | 78.6°F | 76.3°F | 76.6°F |
| Appleton | 78.3°F | 77.6°F | 77.2°F |
| Newark | 78.2°F | 77.5°F | 77.5°F |
| Jersey City | 78.1°F | 77.6°F | 77.4°F |
| Green Bay | 78.1°F | 76.2°F | 76.7°F |
| New York | 78.1°F | 77.5°F | 77.3°F |
| Bristol | 77.9°F | 75.8°F | 76.4°F |
| New Haven | 77.7°F | 76.4°F | 76.4°F |
| Warwick | 77.7°F | 75.8°F | 75.9°F |
| Buffalo | 77.6°F | 77.2°F | 75.7°F |
| Stamford | 77.6°F | 76.2°F | 76.9°F |
| Oshkosh | 77.5°F | 77.2°F | 77.0°F |
| Providence | 77.5°F | 75.6°F | 75.2°F |
| Norwalk | 77.4°F | 76.2°F | 77.0°F |
| Milford | 77.4°F | 76.3°F | 76.5°F |
| New Bedford | 77.2°F | 75.1°F | 76.0°F |
| Yonkers | 77.1°F | 76.6°F | 77.4°F |
| Falmouth | 77.0°F | 74.8°F | 75.3°F |
| Laguna Beach | 77.0°F | 73.5°F | 73.0°F |
| Santa Catalina Island | 76.4°F | 71.9°F | 72.9°F |
| Irvine | 76.2°F | 72.9°F | 72.7°F |
| Michigan City | 76.1°F | 77.3°F | 77.2°F |
| Dennis Port | 76.0°F | 73.8°F | 74.8°F |
| Newport Beach | 75.8°F | 72.8°F | 72.5°F |
| Yosemite | 75.5°F | 71.4°F | 71.4°F |
| Los Angeles | 75.5°F | 72.6°F | 71.1°F |
| Santa Monica | 75.2°F | 72.8°F | 71.0°F |
| Santa Ana | 75.2°F | 72.7°F | 72.2°F |
| Chicago | 75.2°F | 76.5°F | 77.2°F |
| Beverly Hills | 75.2°F | 72.8°F | 71.0°F |
| Hollywood | 75.2°F | 72.8°F | 71.0°F |
| Westbrook | 75.1°F | 74.1°F | 73.8°F |
| Rochester | 75.1°F | 76.1°F | 76.3°F |
| Oak Park | 75.0°F | 76.5°F | 77.2°F |
| Old Saybrook | 74.9°F | 73.4°F | 73.3°F |
| Traverse City | 74.9°F | 74.9°F | 74.5°F |
| Newport | 74.8°F | 73.2°F | 74.2°F |
| Evanston | 74.7°F | 76.5°F | 77.1°F |
| Petoskey | 74.6°F | 72.6°F | 72.7°F |
| Jamestown | 74.5°F | 73.0°F | 74.3°F |
| San Diego | 74.5°F | 71.0°F | 72.3°F |
| Chula Vista | 74.2°F | 70.7°F | 72.2°F |
| Harbor Springs | 74.2°F | 72.7°F | 72.6°F |
| Malibu | 74.2°F | 71.2°F | 69.0°F |
| Edgartown | 74.0°F | 72.4°F | 72.7°F |
| Niagara Falls | 73.9°F | 75.5°F | 74.1°F |
| Nantucket | 73.9°F | 71.9°F | 72.9°F |
| New London | 73.8°F | 72.6°F | 72.2°F |
| Anaheim | 73.7°F | 72.2°F | 70.2°F |
| Groton | 73.7°F | 72.6°F | 72.1°F |
| Montauk | 73.7°F | 72.2°F | 72.5°F |
| Charlevoix | 73.6°F | 72.6°F | 72.2°F |
| Milwaukee | 73.6°F | 73.5°F | 75.9°F |
| Oxnard | 73.4°F | 68.0°F | 65.7°F |
| Santa Barbara | 73.2°F | 68.0°F | 66.6°F |
| Martha's Vineyard | 73.0°F | 71.2°F | 71.4°F |
| Charlestown | 72.9°F | 71.8°F | 72.1°F |
| Stonington | 72.7°F | 71.9°F | 71.3°F |
| Mystic | 72.7°F | 71.9°F | 71.3°F |
| South Haven | 72.6°F | 74.3°F | 74.4°F |
| Westerly | 72.5°F | 71.5°F | 71.3°F |
| Block Island | 72.5°F | 71.1°F | 71.7°F |
| New Shoreham | 72.5°F | 71.1°F | 71.7°F |
| Fremont | 72.3°F | 69.2°F | 69.7°F |
| South Lake Tahoe | 72.3°F | 70.2°F | 69.8°F |
| Incline Village | 72.3°F | 70.0°F | 69.8°F |
| San Jose | 72.2°F | 68.9°F | 69.4°F |
| Saugatuck | 72.2°F | 72.9°F | 73.9°F |
| Sturgeon Bay | 72.1°F | 72.2°F | 73.8°F |
| Stateline | 72.0°F | 70.1°F | 69.8°F |
| Long Beach | 72.0°F | 71.2°F | 67.6°F |
| Provincetown | 71.9°F | 68.7°F | 69.1°F |
| Holland | 71.7°F | 71.5°F | 73.2°F |
| Siasconset | 71.7°F | 69.8°F | 70.7°F |
| Chatham | 71.6°F | 69.8°F | 69.8°F |
| Lake Tahoe | 71.4°F | 69.6°F | 69.2°F |
| Cambridge | 70.6°F | 69.3°F | 68.7°F |
| Boston | 70.4°F | 69.2°F | 68.4°F |
| Mackinac Island | 70.4°F | 71.6°F | 70.2°F |
| Plymouth | 70.3°F | 69.3°F | 68.7°F |
| Salem | 69.7°F | 67.1°F | 67.5°F |
| Hampton | 69.5°F | 65.7°F | 66.6°F |
| Hampton Beach | 69.5°F | 65.7°F | 66.6°F |
| Portsmouth | 69.1°F | 64.8°F | 65.9°F |
| Bayfield | 68.8°F | 69.2°F | 70.5°F |
| Oakland | 68.3°F | 67.9°F | 66.9°F |
| Ogunquit | 68.0°F | 65.7°F | 67.8°F |
| Marquette | 67.6°F | 67.7°F | 69.9°F |
| Wells | 67.6°F | 65.7°F | 67.6°F |
| Freeport | 67.6°F | 66.7°F | 67.8°F |
| York Beach | 67.5°F | 65.6°F | 67.5°F |
| Kennebunkport | 67.5°F | 65.7°F | 67.4°F |
| Old Orchard Beach | 67.2°F | 65.6°F | 67.2°F |
| Brunswick | 67.1°F | 66.6°F | 67.6°F |
| Astoria | 67.0°F | 67.6°F | 65.2°F |
| Duluth | 66.6°F | 69.4°F | 68.7°F |
| San Francisco | 66.0°F | 65.3°F | 63.8°F |
| Sausalito | 65.5°F | 65.3°F | 63.9°F |
| Camden | 64.7°F | 63.9°F | 65.7°F |
| Bellingham | 63.4°F | 62.3°F | 60.3°F |
| Rockland | 63.1°F | 61.9°F | 63.5°F |
| Mount Desert Island | 62.3°F | 61.4°F | 61.3°F |
| Santa Cruz | 62.2°F | 60.2°F | 57.9°F |
| Bar Harbor | 61.8°F | 60.8°F | 61.0°F |
| Tacoma | 61.4°F | 60.9°F | 59.7°F |
| Whidbey Island | 60.8°F | 60.6°F | 60.3°F |
| Ketchikan | 60.1°F | 60.6°F | 60.8°F |
| Ocean Shores | 60.0°F | 60.2°F | 60.8°F |
| Bellevue | 59.6°F | 59.2°F | 58.9°F |
| Monterey | 59.3°F | 60.7°F | 58.0°F |
| Seaside | 57.6°F | 58.1°F | 59.8°F |
| Juneau | 57.5°F | 56.7°F | 56.4°F |
| Sitka | 57.2°F | 58.8°F | 57.2°F |
| Anchorage | 57.1°F | 58.7°F | 56.0°F |
| Cannon Beach | 56.6°F | 58.0°F | 59.6°F |
| Newport | 55.7°F | 56.0°F | 56.7°F |
| Girdwood | 55.7°F | 53.1°F | 52.2°F |
| Rockaway Beach | 55.5°F | 54.8°F | 57.9°F |
| Seward | 55.5°F | 56.6°F | 55.0°F |
| Kenai | 55.4°F | 57.5°F | 55.5°F |
| Valdez | 54.9°F | 55.8°F | 56.4°F |
| Pacific City | 54.8°F | 55.4°F | 56.9°F |
| Haines | 54.5°F | 55.1°F | 54.1°F |
| Grand Marais | 54.3°F | 62.5°F | 63.7°F |
| Depoe Bay | 53.7°F | 55.3°F | 56.1°F |
| Lincoln City | 53.6°F | 54.9°F | 56.3°F |
| Florence | 53.5°F | 54.5°F | 56.1°F |
| Port Angeles | 53.1°F | 52.6°F | 52.0°F |
| Wasilla | 53.1°F | 52.6°F | 52.9°F |
| Homer | 52.9°F | 54.6°F | 52.7°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 August.
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 |
