Water TemperaturesAverage ocean temperatures throughout Hawaii stay around 75°F during this final winter month, meaning you'll always have pleasant temperatures for swimming, snorkeling, and other fun activities in the water.
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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.
The ocean temperature in Hawaii varies very little and is always warm. The average in Honolulu is between 76 and 81 degrees Fahrenheit all year. In March, it will be at the lower end of that range, but still warm. It's never cold here.
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.
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.
Hawaii in February sees ideal temperatures in the 78 to 80 F range. The waters and beaches remain warm and inviting all year round. With this weather, beaches are the perfect spot for sunbathing and water sports.
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.
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.
Spring is always a good time to travel to Hawaii. Unlike other areas, where the spring means rain, the rainy weather of the winter months is a distant memory in Hawaii. The daytime temperatures are comfortably warm, averaging in the high 70s and low 80s.
While Hawaii is a great destination year-round, the best opportunity for good weather exists during April, May, September, and October. As the tradewinds pick up over the winter months, so do the showers, and surf swells, particularly on the north/northeast (windward) shores of each island.
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. It's the perfect time to enjoy the beach or the water.
The cheapest time to fly to Hawaii is during February and March. The most expensive month to fly is December when the holiday period falls, with January being very expensive as well. The peak travel months of June and July are surprisingly not the most expensive months for flights, with middle figure prices.
The perfect year-round escape, Hawaii in winter boasts mild temperatures that rarely drop below 75°F and water plenty warm enough to swim, surf, or play in.
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. It's the perfect time to enjoy the beach or the water.
Just keep in mind that March is prime time for spring break, so you're more likely to see more kids and families, including partying college students. In my long experience you are more likely to have rain in March than in November. It will also likely be cooler in March, typically one of the cooler months in Hawaii.
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.
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.