Maui's weatheris ideal for tourism and beach vacations year round. The weahter is remarkably stable and tropical, with highs (at sea level) in the region of 29 °C (80 to 85 °F) and lows around 20 °C (65 to 70 °F); rainfall is greater from November through April. However, because of the two volcanic mountains that dominate the topography, Maui has a very wide range of climatic conditions depending on elevation and whether an area faces toward or away from the prevailing Tradewinds (blowing from the northeast). For example the top of the West Maui mountain receives over 400 inches (10 m) of rainfall per year, whereas Kihei receives less than 10 inches (250 mm), being in the rain shadow of East Maui Volcano; Kahului airport (the main airport on Maui) has average rainfall of about 19 inches (480 mm), whereas Olinda (upslope from the airport) receives about 73 inches (1.8 m).
Maui has an unusual weather feature known as the Maui vortex, an area of clear sky that often forms over Pukalani due to the swirling of air as it enters the central valley after being forced to move around Haleakala.
These features, plus the fact that you can drive to just about anywhere on the island in less than an hour mean that if you don't like the weather in one spot, you find another sunny spot just a few minutes away.