Swimming in the United States (USA) in october 2025 Sea temperature by city in october

In october in the United States (USA) swimming conditions vary by city. Details below:

In october in Honolulu (Oahu), Miami, Hawaii, Kauai (Garden Isle), Key West, Maui, Florida, Hilo, Captain Cook, Hana, Kahului, Kekaha, Kilauea, La'ie, Molokai, Niihau, Pahala, St. Augustine, Tampa, Waianae, Anna Maria Island, Apalachicola, Biscayne National Park, Boynton Beach, Caladesi Island, Captiva Island, Cedar Key, Clearwater, Cocoa Beach, Egmont Key, Fort Lauderdale, Fort Pierce, Fort Walton Beach, Hernando Beach, island of Hawaii (Big Island), Jacksonville, Kahoolawe, Key Largo, Lanai, Lido Key and Lihue, swimming conditions are perfect! With water reaching a maximum of 82°F and an average of 81°F, going in the water (and staying there!) feels great.

As for New Orleans, Houston, Myrtle Beach, Cameron, Carolina Beach, Dauphin Island (Alabama), Edisto Beach, Grand Isle, Gulf Islands National Seashore, Gulf Shores (Alabama), Holly Beach, Houma and Lake Charles, swimming is pleasant in october. The sea water is 77°F on average (min: 72°F/max: 82°F) so you can easily spend time in the water.

Swimming in october in California, Los Angeles , Washington D. C., New York City, Philadelphia, San Diego, Atlantic City, Baltimore, Brooklyn, Encinitas, Hollywood, Malibu and Manhattan Beach is possible but the sea is generally cool. So though the sea temperature may sometimes reach 68°F, it can also go as low as 62°F. Note that the average is 65°F.

Swimming in october in Boston, Channel Islands National Park and Gaviota is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 54°F/max: 65°F).

Forget about swimming in Anchorage, San Francisco, Seattle, Anchor Point, Dillingham, Dutch Harbor, Ketchikan, Long Beach (Washington), Portland, Bar Harbor (Maine), Big Sur, Cambria, Cape Cod National Seashore, Carmel-by-the-Sea, Cordova, Crescent City, Eureka, Gambell (St. Lawrence Island), Golden Gate National Recreation Area, Gualala, Haines, Half Moon Bay, Hampton Beach, Jenner, Kenai, Klamath, Kodiak, Kotzebue, La Push (Washington) and Lincoln City (Oregon) in october! The water temperature is freezing, reaching as low as 45°F (and only 50°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!