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

Do you want to go to the beach in the United States (USA) in august 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in august in the United States (USA) by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in the United States (USA) in august 2025

Here, find the average sea temperature in the United States (USA) in august in several coastal cities.

Alaska in august

on average:

53°F

min: 50°F / max: 56°F

on average:

54°F

min: 50°F / max: 58°F

on average:

55°F

min: 50°F / max: 60°F

on average:

50°F

min: 48°F / max: 53°F

on average:

57°F

min: 53°F / max: 60°F

Cordova

on average:

57°F

min: 53°F / max: 60°F

Hawaii in august

on average:

80°F

min: 79°F / max: 81°F

on average:

79°F

min: 78°F / max: 81°F

on average:

80°F

min: 79°F / max: 82°F

on average:

80°F

min: 78°F / max: 81°F

on average:

80°F

min: 79°F / max: 82°F

on average:

80°F

min: 79°F / max: 82°F

Louisiana in august

on average:

87°F

min: 84°F / max: 90°F

Cameron

on average:

88°F

min: 85°F / max: 90°F

Grand Isle

on average:

88°F

min: 85°F / max: 92°F

Holly Beach

on average:

88°F

min: 85°F / max: 91°F

Houma

on average:

88°F

min: 84°F / max: 92°F

Lake Charles

on average:

88°F

min: 85°F / max: 91°F

California in august

on average:

68°F

min: 66°F / max: 71°F

on average:

57°F

min: 55°F / max: 59°F

on average:

68°F

min: 66°F / max: 71°F

on average:

59°F

min: 56°F / max: 61°F

Cambria

on average:

59°F

min: 56°F / max: 62°F

on average:

58°F

min: 56°F / max: 61°F

Florida in august

on average:

87°F

min: 85°F / max: 89°F

on average:

87°F

min: 85°F / max: 90°F

on average:

85°F

min: 82°F / max: 87°F

on average:

87°F

min: 85°F / max: 89°F

on average:

87°F

min: 85°F / max: 90°F

Apalachicola

on average:

87°F

min: 84°F / max: 88°F

Northeastern Coast in august

on average:

79°F

min: 76°F / max: 81°F

on average:

68°F

min: 66°F / max: 71°F

on average:

74°F

min: 71°F / max: 78°F

on average:

77°F

min: 73°F / max: 81°F

on average:

77°F

min: 72°F / max: 82°F

on average:

78°F

min: 75°F / max: 81°F

Northwest Coast in august

on average:

54°F

min: 52°F / max: 56°F

on average:

58°F

min: 54°F / max: 61°F

on average:

57°F

min: 55°F / max: 60°F

La Push (Washington)

on average:

53°F

min: 51°F / max: 55°F

Lincoln City (Oregon)

on average:

56°F

min: 53°F / max: 58°F

South West in august

on average:

87°F

min: 85°F / max: 90°F

South East in august

on average:

83°F

min: 81°F / max: 85°F

on average:

83°F

min: 81°F / max: 85°F

Dauphin Island (Alabama)

on average:

87°F

min: 84°F / max: 90°F

Edisto Beach

on average:

84°F

min: 82°F / max: 87°F

on average:

87°F

min: 85°F / max: 90°F

Where should you go swimming in the United States (USA) in the month of august?

Swimming in the United States (USA) in august is ideal (in the best case scenario)

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

In august in Honolulu (Oahu), New Orleans, Miami, Hawaii, Kauai (Garden Isle), Key West, Maui, Florida, Hilo, Captain Cook, Hana, Houston, Kahului, Kekaha, Kilauea, La'ie, Molokai, Myrtle Beach, Niihau, Pahala, St. Augustine, Tampa, Waianae, Anna Maria Island, Apalachicola, Biscayne National Park, Boynton Beach, Caladesi Island, Cameron, Captiva Island, Carolina Beach, Cedar Key, Clearwater, Cocoa Beach, Dauphin Island (Alabama), Edisto Beach, 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), Jacksonville, Kahoolawe, Key Largo, Lake Charles, Lanai, Lido Key and Lihue, swimming conditions are perfect! With water reaching a maximum of 81°F and an average of 80°F, going in the water (and staying there!) feels great.

As for Washington D. C., New York City, Philadelphia, Atlantic City, Baltimore and Brooklyn, swimming is pleasant in august. The sea water is 79°F on average (min: 76°F/max: 81°F) so you can easily spend time in the water.

Swimming in august in California, Los Angeles , Boston, San Diego, Cape Cod National Seashore, Encinitas, Hampton Beach, Hollywood, Malibu and Manhattan Beach is possible but the sea is generally cool. So though the sea temperature may sometimes reach 71°F, it can also go as low as 66°F. Note that the average is 68°F.

Swimming in august in 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 63°F (min: 60°F/max: 66°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, Carmel-by-the-Sea, Cordova, Crescent City, Eureka, Gambell (St. Lawrence Island), Golden Gate National Recreation Area, Gualala, Haines, Half Moon Bay, Jenner, Kenai, Klamath, Kodiak, Kotzebue, La Push (Washington) and Lincoln City (Oregon) in august! The water temperature is freezing, reaching as low as 50°F (and only 56°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!

Where to go swimming in the United States (USA) in august: the map of sea temperatures

ideal swimming pleasant swimming cool swimming cold swimming freezing swimming

Water temperature and seasonal norms in august

Anchorage

August
Average sea temperature 53°F
Minimum sea temperature 50°F
Maximum sea temperature 56°F
Average outside temperature 58°F
Maximum outside temperature 63°F
Minimum outside temperature 52°F
Precipitation 4in
Number of days of precipitation 7 jour(s)
(23%)
Cloud cover 44%
Our opinion freezing swimming

More information on swimming in Anchorage in august

California

August
Average sea temperature 68°F
Minimum sea temperature 66°F
Maximum sea temperature 71°F
Average outside temperature 90°F
Maximum outside temperature 104°F
Minimum outside temperature 76°F
Precipitation 0.2in
Cloud cover 4%
Our opinion cool swimming

More information on swimming in California in august

Honolulu (Oahu)

August
Average sea temperature 80°F
Minimum sea temperature 79°F
Maximum sea temperature 81°F
Average outside temperature 81°F
Maximum outside temperature 83°F
Minimum outside temperature 79°F
Precipitation 2.5in
Number of days of precipitation 3 jour(s)
(9%)
Cloud cover 35%
Our opinion ideal swimming

More information on swimming in Honolulu (Oahu) in august

New Orleans

August
Average sea temperature 87°F
Minimum sea temperature 84°F
Maximum sea temperature 90°F
Average outside temperature 86°F
Maximum outside temperature 92°F
Minimum outside temperature 81°F
Precipitation 7.7in
Number of days of precipitation 13 jour(s)
(43%)
Cloud cover 27%
Our opinion ideal swimming

More information on swimming in New Orleans in august

Los Angeles

August
Average sea temperature 68°F
Minimum sea temperature 66°F
Maximum sea temperature 71°F
Average outside temperature 81°F
Maximum outside temperature 86°F
Minimum outside temperature 74°F
Precipitation 0.2in
Number of days of precipitation 0 jour(s)
(1%)
Cloud cover 6%
Our opinion cool swimming

More information on swimming in Los Angeles in august

List of coastal cities in the United States (USA)

Anchorage in augustfreezing swimming
California in augustcool swimming
Honolulu (Oahu) in augustideal swimming
New Orleans in augustideal swimming
Los Angeles in augustcool swimming
Miami in augustideal swimming
Washington D. C. in augustpleasant swimming
Boston in augustcool swimming
Hawaii in augustideal swimming
Kauai (Garden Isle) in augustideal swimming
Key West in augustideal swimming
Maui in augustideal swimming
Florida in augustideal swimming
New York City in augustpleasant swimming
San Francisco in augustfreezing swimming
Seattle in augustfreezing swimming
Anchor Point in augustfreezing swimming
Hilo in augustideal swimming
Captain Cook in augustideal swimming
Dillingham in augustfreezing swimming
Dutch Harbor in augustfreezing swimming
Hana in augustideal swimming
Houston in augustideal swimming
Kahului in augustideal swimming
Kekaha in augustideal swimming
Ketchikan in augustfreezing swimming
Kilauea in augustideal swimming
La'ie in augustideal swimming
Long Beach (Washington) in augustfreezing swimming
Molokai in augustideal swimming
Myrtle Beach in augustideal swimming
Niihau in augustideal swimming
Pahala in augustideal swimming
Philadelphia in augustpleasant swimming
Portland in augustfreezing swimming
St. Augustine in augustideal swimming
San Diego in augustcool swimming
Tampa in augustideal swimming
Waianae in augustideal swimming
Anna Maria Island in augustideal swimming
Apalachicola in augustideal swimming
Atlantic City in augustpleasant swimming
Baltimore in augustpleasant swimming
Bar Harbor (Maine) in augustfreezing swimming
Big Sur in augustfreezing swimming
Biscayne National Park in augustideal swimming
Boynton Beach in augustideal swimming
Brooklyn in augustpleasant swimming
Caladesi Island in augustideal swimming
Cambria in augustfreezing swimming
Cameron in augustideal swimming
Cape Cod National Seashore in augustcool swimming
Captiva Island in augustideal swimming
Carmel-by-the-Sea in augustfreezing swimming
Carolina Beach in augustideal swimming
Cedar Key in augustideal swimming
Channel Islands National Park in augustcold swimming
Clearwater in augustideal swimming
Cocoa Beach in augustideal swimming
Cordova in augustfreezing swimming
Crescent City in augustfreezing swimming
Dauphin Island (Alabama) in augustideal swimming
Edisto Beach in augustideal swimming
Egmont Key in augustideal swimming
Encinitas in augustcool swimming
Eureka in augustfreezing swimming
Fort Lauderdale in augustideal swimming
Fort Pierce in augustideal swimming
Fort Walton Beach in augustideal swimming
Gambell (St. Lawrence Island) in augustfreezing swimming
Gaviota in augustcold swimming
Golden Gate National Recreation Area in augustfreezing swimming
Grand Isle in augustideal swimming
Gualala in augustfreezing swimming
Gulf Islands National Seashore in augustideal swimming
Gulf Shores (Alabama) in augustideal swimming
Haines in augustfreezing swimming
Half Moon Bay in augustfreezing swimming
Hampton Beach in augustcool swimming
Hernando Beach in augustideal swimming
Holly Beach in augustideal swimming
Hollywood in augustcool swimming
Houma in augustideal swimming
island of Hawaii (Big Island) in augustideal swimming
Jacksonville in augustideal swimming
Jenner in augustfreezing swimming
Kahoolawe in augustideal swimming
Kenai in augustfreezing swimming
Key Largo in augustideal swimming
Klamath in augustfreezing swimming
Kodiak in augustfreezing swimming
Kotzebue in augustfreezing swimming
La Push (Washington) in augustfreezing swimming
Lake Charles in augustideal swimming
Lanai in augustideal swimming
Lido Key in augustideal swimming
Lihue in augustideal swimming
Lincoln City (Oregon) in augustfreezing swimming
Malibu in augustcool swimming
Manhattan Beach in augustcool swimming
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