Despite Hawaii's location, it does get colder (relatively) during winter, so we'll dress appropriately: long pants, shoes, jackets and sweaters, etc. For me, growing up in Hawai'i, anything below 60 was freezing.
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Hawaii weather is warm and humid, with temperatures between 70ºF to mid 80ºF and the pleasant trade winds. Even so, you'll need pack at least one pair of long pants and a light sweater.
From November to April, weather winter Hawaii temperatures typically range from 75 to 80°F, with the rainiest months being March and April. Rainfall is less common on the southern and western coasts of most Hawaiian Islands.
While you may need a light sweater or light jacket in the evenings during your trip, Hawaii's high humidity and sunny, pleasant temperatures create the perfect beach weather to swim and get some sun.
Take a light jacket or sweater, but chances are you won't even wear that. Of course, if you're planning to stargaze atop Mauna Kea volcano or see sunrise at the summit of Haleakala, you'll need heavier attire because it can dip below the 30s Fahrenheit there.
Thanks to warm daytime temperatures and just as warm ocean waters, winter in Hawaii is the same dream vacation as summer in Hawaii. The average daytime winter temperature sits around 78°F. Compare that to the average daytime summer temperature of 85°F, and most won't even notice the difference.
Hawaii only has two seasons: summer and winter. Summer in the islands is characterized by warmer temperatures ranging from 75 – 85 Fahrenheit, a fairly dry climate, and a calmer ocean. Winter in Hawaii is cooler (65 – 75°), wetter, and has a larger, rougher surf.
Pacific Ocean temperatures on Honolulu shores are warmer than those of Hilo, but both are still swim-worthy at 77 and 73 degrees, respectively. Ocean temperatures in December all around the Hawaiian islands rest comfortably at about 77 degrees.
Hawaii has semi-tropical weather. 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.
Aloha attire for women : Slacks and a blouse are great as well as an aloha-style dress and sandals. Aloha attire for men: Aloha shirts (obviously) with either loose fitting pants (think linen or cotton) or tasteful length shorts. Polo shirts are also great.
You'll want to bring a light jacket or sweater; evenings can be cool. Rain probably won't be an all-day affair, but the north shore will certainly be cooler, and it gets more rain in winter. South shore should be warm and sunny. For swimming in winter I wear the equivalent of a short-sleeve rash guard.
Crowds: Hawaii Can Feel Crowded During Christmas. The fall shoulder season (slow season) ends in mid-November as Hawaii starts to get busy for the Thanksgiving holiday. Thanksgiving till the end of March is considered the winter busy season.
Hawaii Crowds in DecemberThe end of the month gets pretty busy in Hawaii, with people flocking to this tropical paradise for the holidays. December is the most active tourist season for the islands. However, the rest of the month is tranquil, making it a lovely choice for a winter getaway.
Hawaii's warmest months are not June and July, but August and September. Its coolest months, are not December and January, but February and March, reflecting the seasonal lag in the oceans's temperature.
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.
Does it snow in Hawaii? The answer is yes, although only on top of the highest peaks on Maui and the Big Island. Every winter, storm systems bring frequent snow storms to elevations generally above 11,000 feet. This means that only Mauna Kea and Mauna Loa are impacted.
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.