We come to Maui to play in the sun and there is a lot of it. Like the mainland summer is the driest season and winter the wettest. Ironically winter is the most popular and expensive months to come. I suppose Maui rain is always warmer than freezing snow.
One of the many things that attracted me to buy a South Main Vacation Rental Condo is that area gets the least rain of the whole island. Check out what it's like in South Kihei now:
South Kihei Beach Web Cam
Part time Maui resident sharing my Kihei condo with guests when I'm staying in my mainland home.