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

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

In april in Miami, Florida, Biscayne National Park and Key Largo, swimming conditions are perfect! With water reaching a maximum of 83°F and an average of 79°F, going in the water (and staying there!) feels great.

As for Honolulu (Oahu), New Orleans, Hawaii, Kauai (Garden Isle), Key West, Maui, Hilo, Captain Cook, Hana, Houston, Kahului, Kekaha, Kilauea, La'ie, Molokai, Niihau, Pahala, St. Augustine, Tampa, Waianae, Anna Maria Island, Apalachicola, Boynton Beach, Caladesi Island, Cameron, Captiva Island, Cedar Key, Clearwater, Cocoa Beach, Dauphin Island (Alabama), Egmont Key, Fort Lauderdale, Fort Pierce, Fort Walton Beach, Grand Isle, Gulf Islands National Seashore, Gulf Shores (Alabama), Hernando Beach, Holly Beach, Houma, island of Hawaii (Big Island), Kahoolawe, Lake Charles, Lanai, Lido Key and Lihue, swimming is pleasant in april. The sea water is 77°F on average (min: 75°F/max: 80°F) so you can easily spend time in the water.

Swimming in april in Myrtle Beach, Carolina Beach, Edisto Beach and Jacksonville is possible but the sea is generally cool. So though the sea temperature may sometimes reach 70°F, it can also go as low as 57°F. Note that the average is 63°F.

Swimming in april in California, Los Angeles , San Diego, Encinitas, Hollywood and Manhattan Beach is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 56°F/max: 63°F).

Forget about swimming in Anchorage, Washington D. C., Boston, New York City, San Francisco, Seattle, Anchor Point, Dillingham, Dutch Harbor, Ketchikan, Long Beach (Washington), Philadelphia, Portland, Atlantic City, Baltimore, Bar Harbor (Maine), Big Sur, Brooklyn, Cambria, Cape Cod National Seashore, Carmel-by-the-Sea, 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, Jenner, Kenai, Klamath, Kodiak, Kotzebue, La Push (Washington), Lincoln City (Oregon) and Malibu in april! The water temperature is freezing, reaching as low as 35°F (and only 41°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!