Sun/Weather Safety, Maui
Free Local Guides and maps are available on the street, at visitor centers and at the airport. Take advantage of the local happenings, attractions, shopping and dining suggestions; you never know what you might find.
Maui's main enemy has to be erosion. Whether it be wind or sea, both are slowly taking Maui off the planet. Someday, Maui will cease to exist. Fortunately, it will be thousands of years from now. The sea constantly chips away at the shore lines creating beautiful and unimaginable shapes. Wind and rain have eroded sites like Haleakala and much of the National Park leaving behind the crater and valleys you see today. The big misnomer is that volcanic activity is the big cause. This is very wrong. It's the sea, wind, and rain. No where is this more evident than on the neighboring island of Kaho'olawe, and island no longer accessible to people. Enjoy the beautiful island paradise of Maui while it's there!
The weather on Maui depends more on where you are than on what season is. The average daily temperature along the coast is about 78ºF (25.5ºC) in summer and during the winter it drops to 72ºF (22ºC).
On Haleakala summit, the average is about 43-50ºF (6-10ºC).Nights are no more than 10 degrees Fahrenheit cooler than days.