If you have an aversion to rain, avoid traveling to Hawaii between November and March. Using Oahu as an example, Waikiki sees an average of 3 to 4 inches of rain per month during that time period.
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Climate. Many microclimates occur over Maui&#039;s varied landscape. The island&#039;s leeward (western) side, where most of its upscale resorts sit, is generally drier than the windward (eastern) side. Lush rain forests and volcanic terrain, including the Iao Valley and twisty road to Hana, characterize Maui&#039;s tropical windward side.
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The short answer to this question is that there is no worst time. Yet some visitors prefer to arrive in Hawaii when it’s not as crowded or when the weather is more to their liking. Others prefer not to be in town at the same time a major event is being hosted. The following are some helpful suggestions for avoiding some of these obstacles on your next Hawaiian vacation.
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In addition, big wave surfing in Maui is best in the winter months. If you don&#039;t want to attempt Jaws, a monster wave created by water rolling over a barrier reef off Hookipa Beach, watch the brave surfers from rocky cliffs overlooking nearby Honolua Bay.
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Any time is the best time to travel to Maui -- just ask the 2.3 million tourists who visit this stunningly beautiful Hawaiian island each year.
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The best times to visit Maui are April through May and September through November. The spring and fall shoulder seasons provide the pleasant weather Hawaii vacationers seek without the high rates and heavy crowds that accompany the summer and winter. However, if you're into surfing, you'll want to travel in the winter for the best conditions — just book as early as possible to get a discounted rate.
http://travel.usnews.com/Maui_HI/When_To_Visit/
Maui sees large numbers of snowbirds flying the chilly coop during the winter months. Those who visit Maui in the winter are willing to shell out the high airfare costs and room rates for a taste of the island's 80-degree weather.
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The two weeks around Christmas and New Year’s are the most expensive times to travel to Hawaii. Not only are the specials gone, but accommodations are often sold out months in advance. Hotel rates can increase by as much as 50 percent, sometimes more. Deposit requirements and cancellation fees are much more restrictive.
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Temperatures may be warm on the mainland, but travelers can't resist Maui in the summer. This is when the island sees a large influx of families — the arrival of summertime brings with it less forceful currents, making swimming conditions better for younger beach bums.
http://travel.usnews.com/Maui_HI/When_To_Visit/
Appropriate Clothing. Maui is warm and tropical, and its dress code is resolutely casual. Locals wear a daily uniform of Aloha shirts, shorts and sandals to all but the fanciest dinner or nightclub. Bring T-shirts, jeans, skirts, sundresses and bathing suits, but leave the formal outfits at home.
http://traveltips.usatoday.com/time-travel-maui-15413.html
what is the best weather month to visit maui
The best weather month to visit Maui is April through May and September through November.