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

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

As for Honolulu (Oahu), Miami, Hawaii, Kauai (Garden Isle), Key West, Maui, Florida, Hilo, Captain Cook, Hana, Kahului, Kekaha, Kilauea, La'ie, Molokai, Niihau, Pahala, Waianae, Biscayne National Park, Boynton Beach, Cocoa Beach, Fort Lauderdale, Fort Pierce, island of Hawaii (Big Island), Kahoolawe, Key Largo, Lanai and Lihue, swimming is pleasant in march. The sea water is 76°F on average (min: 75°F/max: 77°F) so you can easily spend time in the water.

Swimming in march in New Orleans, Houston, St. Augustine, Tampa, Anna Maria Island, Apalachicola, Caladesi Island, Cameron, Captiva Island, Cedar Key, Clearwater, Dauphin Island (Alabama), Egmont Key, Fort Walton Beach, Grand Isle, Gulf Islands National Seashore, Gulf Shores (Alabama), Hernando Beach, Holly Beach, Houma, Lake Charles and Lido Key is possible but the sea is generally cool. So though the sea temperature may sometimes reach 72°F, it can also go as low as 55°F. Note that the average is 63°F.

Swimming in march in San Diego, Edisto Beach, Encinitas and Jacksonville is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 58°F/max: 62°F).

Forget about swimming in Anchorage, California, Los Angeles , Washington D. C., Boston, New York City, San Francisco, Seattle, Anchor Point, Dillingham, Dutch Harbor, Ketchikan, Long Beach (Washington), Myrtle Beach, Philadelphia, Portland, Atlantic City, Baltimore, Bar Harbor (Maine), Big Sur, Brooklyn, Cambria, Cape Cod National Seashore, Carmel-by-the-Sea, Carolina Beach, Channel Islands National Park, Cordova, Crescent City, Eureka, Gambell (St. Lawrence Island), Gaviota, Golden Gate National Recreation Area, Gualala, Haines, Half Moon Bay, Hampton Beach, Hollywood, Jenner, Kenai, Klamath, Kodiak, Kotzebue, La Push (Washington), Lincoln City (Oregon), Malibu and Manhattan Beach in march! The water temperature is freezing, reaching as low as 35°F (and only 38°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!