Is it warm enough to swim in Hawaii in April?

The relatively high ocean temperatures and perfect weather make Hawaii the ideal destination for swimming and surfing. The average temperature of the ocean during April is around 77°F, which is warm enough for most visitors, especially those from cold climates.



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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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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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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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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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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 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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If the weather is your only consideration, April is perhaps the best time to visit Hawaii. Do you want to enjoy sunny days in the Kohala coast region, explore the Kilauea Volcano, or go surfing in Waikiki?

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Hawaii's hurricane season runs from June 1 to Nov. 30. This year, the National Oceanic and Atmospheric Administration (NOAA) predicts more cyclone activity in the central Pacific than usual, due to it being an El Nino summer. NOAA predicts that there will be four to seven cyclones this year.

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If it's your first time in Hawaii, your ideal island will depend on your travel style and to-do list. For most travelers visiting Hawaii for the first time, the Big Island of Hawaii should be the winner because it offers the most diverse experiences.

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While many vacations are five to seven days long, we recommend staying for at least 10 days to enjoy your Hawaiian vacation. The time change is difficult to adjust to at first and takes about 3 days to get fully acclimated. So, allowing a couple days to get over the jet lag is important.

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The rainy season is October through April, so pack your umbrella and a patient smile. The weather stays warm when it rains, so not many people wear rain jackets or boots. You'll still see flip flops all around. When planning what to pack for Hawaii, choose breezy tops and casual shorts or capris.

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Whether you want to get some extra Vitamin D or surf with the locals, these are the best Hawaiian beaches to keep you warm during the winter.
  • Waimea Bay, Oahu. ...
  • Yokohama Bay, Oahu. ...
  • Kalapaki Beach, Kauai. ...
  • Kehana Beach, Big Island. ...
  • Ho'okipa Beach Park, Maui. ...
  • Lanikai Beach, Oahu. ...
  • Punaluu Beach, Big Island.


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Maui, Florida, and Southern California are all known for their balmy surf and fabulous beaches. But not all warm water is created equal. With temperatures that summer between 75 and 80 degrees all year, Maui is by far the most reliable place in the U.S. to dive, dunk, swim, and snorkel in comfort.

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