Is the water in Hawaii warm in the summer?

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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According to data from the National Oceanic Atmospheric Association (NOAA), the warmest water off Honolulu can be found from July to September—averaging 80 to 81 degrees Fahrenheit. However, Honolulu water temperatures drop to only 76 degrees in January, according to NOAA.

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They're actually really close. For example, in Kauai, which is the northernmost of the major Hawaiian Islands, ocean temperatures range from 77°F to 83°F. On the beach resort side of Hawaii (Big) Island, ocean temperatures range between 77°F and 81°F.

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Best Time for Snorkeling and Swimming: Great swimming and snorkeling are possible year-round in Hawaii, but during summer months (May through September) water is warmer, waves are smaller, and skies are sunnier, making conditions ideal for these water-based activities.

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In Miami Beach, water temps average as low as 71°F and as high as 86°F. In comparison to Hawaii, Miami's water temperatures dip lower than Hawaii's in the winter, but are a bit warmer in the summer. For a look at other coastal temperatures, see this link to the NOAA data.

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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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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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Due to the Hawaiian Island's proximity to the equator, the suns rays are much stronger that what you might experience at home. (Unless of course, your home is also near the equator.) And, isn't it miserable to get a sunburn on vacation?! You do need to take even more precautions in the sun at the Hawaiian Islands.

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Encounters between sharks and people are infrequent, and most inshore species pose little threat to humans. Although any shark may be potentially dangerous, especially if provoked, it is believed that only a few species of Hawaiian sharks have been responsible for biting people.

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Makunufushi Island, Maldives The Maldives doesn't have a swimming season because the water is always warm enough (82 to 86 degrees) to dive right in and splash around. There are tons of gorgeous beaches, but we're partial to the private island of Makunufushi.

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