Is the water in Hawaii warm?

As a general rule, Hawaiian waters average 77 degrees in the wintertime to 82 degrees in the summertime. Now, compared to the U.S. West Coast, Hawaiian waters are definitely much warmer (10-20 degrees warmer) than the waters off Southern California. No comparison really for the U.S. West Coast.



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The Hawaiian Islands' near-shore water temperatures remain comfortable throughout the year. The average water temperature is 74° F (23.3° C), with a summer high of 80° F (26.7° C). Wave action varies dramatically between island coasts and seasons. Summer waters are typically gentle on all beaches.

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So overall, compared to those warm water areas of the U.S. Gulf and Florida, Hawaiian waters are warmer in the winter and cooler in the summer. As a general rule, Hawaiian waters average 77 degrees in the wintertime to 82 degrees in the summertime.

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As a general rule, Hawaiian waters average 77 degrees in the wintertime to 82 degrees in the summertime. Now, compared to the U.S. West Coast, Hawaiian waters are definitely much warmer (10-20 degrees warmer) than the waters off Southern California. No comparison really for the U.S. West Coast.

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Additionally, August and September are Hawaii's warmest months, with August being the hottest month overall. You can expect the average high temperature to reach around 87 degrees daily, while the average low temperature tends to stay around 76 degrees in August.

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The Big Island Early in the year you might see migrating humpback whales offshore, and all year long the water is perfect for swimming, bodyboarding, and snorkeling, though as is true on most Hawaiian beaches, the surf will tend to be higher in the winter months and far gentler in summer.

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The risk of being attacked by a wild animal when swimming in Hawaii is low, as there is only a small number of shark attacks reported each year, and other marine life such as jellyfish, Portuguese man-of-war, moray eels, and sea urchins are more likely to cause a minor injury than a serious one.

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Hawaii's rainy season lasts from October to March, with Hawaii's rainiest month being December.

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While it is very common on the Hawaiian Islands to go barefoot or wear flip-flops (locals call them slippers), you should never spend the day at the Polynesian Cultural Center or any of the many outdoor activities across our island without the proper footwear. Make sure you wear some good walking shoes or sneakers!

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You'll want at least two sets of swimwear so that you can dry one out each day. Washing and repeating other outfits is a great way to save space in the suitcase and many hotels and condos have laundry facilities for longer stays.

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Daytime temperatures reach well into the 80s and even the lower 90s in some locations, especially the drier leeward sides. Overnight low temperatures are in the 70s. At higher elevations, such as Haleakala on Maui and Mauna Kea and Mauna Loa on the Big Island, temperatures are much cooler.

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Hawaii is blessed with sunshine virtually all year-round, so any time would be a great time for a visit. Temperature changes are minor: During the summer, the average daytime temperature is 85°; in the winter, it's 78°. Even near-shore ocean temperatures don't vary that much, averaging 74° throughout the year.

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