In September warmest sea in USA is usually observed in the following locations: Key West, Fort Lauderdale, West Palm Beach.
Table below shows the average sea water temperature for marine resorts of USA in September for the last three years.
| Place name | September 2025 | September 2024 | September 2023 |
|---|---|---|---|
| Key West | 86.9°F | 87.4°F | 87.3°F |
| Fort Lauderdale | 86.4°F | 86.4°F | 86.2°F |
| West Palm Beach | 86.2°F | 86.4°F | 86.2°F |
| Miami Beach | 86.1°F | 86.3°F | 86.3°F |
| Naples | 86.1°F | 87.2°F | 86.8°F |
| South Padre Island | 86.0°F | 85.8°F | 86.3°F |
| Corpus Christi | 85.8°F | 84.7°F | 87.1°F |
| Miami | 85.8°F | 86.0°F | 86.0°F |
| Houston | 84.9°F | 83.4°F | 86.1°F |
| Siesta Key | 84.9°F | 86.8°F | 85.8°F |
| Sarasota | 84.8°F | 86.7°F | 85.8°F |
| Cocoa Beach | 84.6°F | 85.2°F | 84.4°F |
| Tampa | 84.3°F | 86.0°F | 85.5°F |
| New Orleans | 84.3°F | 82.9°F | 85.1°F |
| St. Petersburg | 84.1°F | 86.1°F | 85.3°F |
| Clearwater Beach | 84.0°F | 86.2°F | 85.5°F |
| Pensacola | 83.9°F | 84.2°F | 84.4°F |
| Panama City Beach | 83.4°F | 84.8°F | 85.1°F |
| Destin | 83.1°F | 84.5°F | 85.0°F |
| Orlando | 82.8°F | 83.6°F | 83.4°F |
| Daytona Beach | 82.7°F | 83.2°F | 83.5°F |
| St. Augustine | 81.8°F | 82.7°F | 83.4°F |
| Kauai | 81.5°F | 79.4°F | 80.4°F |
| Jacksonville | 81.1°F | 82.0°F | 82.8°F |
| Kailua Kona | 80.9°F | 81.0°F | 80.5°F |
| Honolulu | 80.6°F | 81.0°F | 80.2°F |
| Hawaii | 80.5°F | 80.8°F | 80.0°F |
| Maui | 79.9°F | 79.7°F | 79.4°F |
| Oahu | 79.8°F | 80.0°F | 79.6°F |
| Charleston (SC) | 78.8°F | 78.9°F | 82.2°F |
| Isle of Palms | 78.8°F | 79.3°F | 81.2°F |
| Myrtle Beach | 78.6°F | 79.5°F | 80.6°F |
| North Myrtle Beach | 78.5°F | 79.5°F | 80.5°F |
| Carolina Beach | 78.0°F | 78.4°F | 79.9°F |
| Wilmington (NC) | 78.0°F | 78.3°F | 80.1°F |
| Wrightsville Beach | 77.9°F | 78.5°F | 80.2°F |
| North Topsail Beach | 77.7°F | 78.5°F | 80.2°F |
| Washington | 74.7°F | 75.2°F | 77.2°F |
| Corolla | 74.6°F | 74.2°F | 76.8°F |
| Baltimore | 74.3°F | 74.4°F | 76.0°F |
| Tangier Island | 73.8°F | 74.9°F | 77.3°F |
| Virginia Beach | 73.8°F | 73.9°F | 76.4°F |
| Ocean City (MD) | 72.9°F | 71.6°F | 74.4°F |
| Rehoboth Beach | 72.5°F | 71.5°F | 74.0°F |
| Cape May | 72.2°F | 71.4°F | 73.9°F |
| Wildwood | 72.1°F | 71.3°F | 73.8°F |
| Ocean City (NJ) | 71.7°F | 71.2°F | 73.3°F |
| Atlantic City | 71.6°F | 71.3°F | 73.1°F |
| Long Beach Island | 71.5°F | 71.1°F | 72.9°F |
| Cleveland | 71.3°F | 72.1°F | 72.1°F |
| New York | 71.2°F | 70.6°F | 72.2°F |
| Jersey City | 71.2°F | 70.6°F | 72.2°F |
| Milford | 70.8°F | 71.2°F | 71.5°F |
| Los Angeles | 70.6°F | 68.8°F | 68.9°F |
| New Haven | 70.6°F | 70.6°F | 71.1°F |
| Beverly Hills | 70.4°F | 68.7°F | 68.4°F |
| Hollywood | 70.4°F | 68.7°F | 68.4°F |
| Santa Monica | 70.3°F | 68.6°F | 68.4°F |
| Hampton Bays | 70.1°F | 69.7°F | 71.1°F |
| Westbrook | 69.7°F | 68.8°F | 69.5°F |
| Evanston | 69.6°F | 71.6°F | 69.5°F |
| San Jose | 69.5°F | 68.5°F | 68.6°F |
| Erie | 69.5°F | 70.6°F | 71.2°F |
| Newport Beach | 69.5°F | 68.2°F | 68.0°F |
| Malibu | 69.5°F | 66.8°F | 67.9°F |
| Irvine | 69.4°F | 68.3°F | 67.9°F |
| Providence | 69.1°F | 68.2°F | 70.0°F |
| Michigan City | 68.8°F | 70.7°F | 70.5°F |
| Montauk | 68.7°F | 67.4°F | 68.7°F |
| Santa Barbara | 68.5°F | 65.4°F | 66.6°F |
| Buffalo (NY) | 68.0°F | 69.8°F | 69.7°F |
| Martha's Vineyard | 67.9°F | 66.0°F | 69.5°F |
| Nantucket | 67.7°F | 66.3°F | 68.3°F |
| Holland | 67.6°F | 68.8°F | 67.1°F |
| Long Beach (CA) | 67.5°F | 65.9°F | 66.3°F |
| San Diego | 67.3°F | 69.2°F | 67.5°F |
| Oakland | 67.1°F | 65.3°F | 66.7°F |
| Niagara Falls | 66.4°F | 68.2°F | 68.5°F |
| South Lake Tahoe | 65.9°F | 64.3°F | 64.9°F |
| Lake Tahoe | 65.9°F | 64.2°F | 64.9°F |
| Yosemite | 65.6°F | 65.6°F | 65.6°F |
| Chicago | 65.0°F | 71.6°F | 69.6°F |
| San Francisco | 64.8°F | 63.0°F | 64.7°F |
| Plymouth | 64.5°F | 64.7°F | 65.7°F |
| Cambridge | 63.9°F | 64.6°F | 65.7°F |
| Boston | 63.7°F | 64.4°F | 65.7°F |
| Hampton | 61.6°F | 62.3°F | 64.4°F |
| Hampton Beach | 61.6°F | 62.3°F | 64.6°F |
| Portsmouth | 61.1°F | 61.2°F | 63.6°F |
| Monterey | 60.7°F | 57.3°F | 60.6°F |
| Tacoma | 58.5°F | 57.7°F | 57.7°F |
| Bar Harbor | 58.5°F | 57.8°F | 59.0°F |
| Bellevue | 57.3°F | 57.0°F | 56.9°F |
| Seaside | 55.5°F | 56.6°F | 57.4°F |
| Newport (OR) | 54.9°F | 55.4°F | 55.0°F |
| Sitka | 54.8°F | 53.4°F | 54.7°F |
| Florence | 54.1°F | 54.4°F | 53.5°F |
| Anchorage | 53.8°F | 52.6°F | 52.2°F |
| Rockaway Beach | 53.4°F | 55.4°F | 54.8°F |
| Wasilla | 51.3°F | 50.8°F | 50.7°F |
Charts below show average sea water temperature for USA resorts with the warmest sea in September.
You can also check other months of the year to see sea temperature of USA resorts at that time.
Places in USA:
Name
°F
