Archbishop is right. When my husband and I went there for our honeymoon in June 1993, we experienced two major downpours. They lasted a couple of hours in the late evening, and the rain was warm. By morning, the sky was blue and the beautiful sea was calm. Here is a link which will tell you a little about the rainy seasons in the Maldives. http://www.1uptravel.com/geography/maldives.html
Highly recommend it.