Is it warm enough to swim in Hawaii?

As a reminder, Hawaii's water temperatures stay several degrees above 70°F and are warm enough for swimming and snorkeling. The National Center for Cold Water Safety also provides some useful water temperature reference points: 85F(29.4C) Water feels pleasantly cool rather than warm.



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Water temperatures are around 74 degrees so swimming is a year round activity here in Hawaii. If you're looking into boating, snorkeling, surfing or any other Hawaii activity this winter, be sure to book as soon as possible!

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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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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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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 and Florida have 238 and 240 days of sunshine each year, respectively, on average. Hawaii is slightly hotter than Florida, 77 degrees F versus 72 degrees F, on average.

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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 best time to visit Hawaii is between March and September. This is when the islands see the highest temperatures and the lowest amount of rain.

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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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The State of Hawai'i is home to eight invasive species of mosquitoes - six that bite humans and two that feed solely on plants.

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With two days of travel, it is great to have 8 or more full days to explore the island you're staying on. If you are looking to hike, snorkel, or camp, we recommend taking even 14 days for your vacation.

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Temperatures usually range from 75-90 degrees year round in the daytime, and 70-80 degrees at night. Temperatures in the winter months may be a little cooler, where nighttime temperatures can sometimes fall into the 50's. (It feels much cooler than that with a 20 MPH trade wind blowing.)

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Swimming in the winter in Hawaii isn't just possible—it's practically required. Okay, not really, but it is a favorite pastime for local Hawaiians and visitors alike. Thanks to warm daytime temperatures and just as warm ocean waters, winter in Hawaii is the same dream vacation as summer in Hawaii.

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