I've been to Maui in late February, early March, April, May and June. The weather in Maui only varies a few degrees throughout the year. I actually found that I liked the weather better in Feb, March and April than in May and June. It didn't rain at all while I was there in Feb, March or April (and actually rained some this past May when I was there) and was less windy (when I went in June a year ago it was hot and really, really windy). I think it all depends on the week, though. If I had a choice I would have planned by wedding for March or April - since I thought the weather was so great those months. However, with school, etc, I'm having to plan it in August. It seems to be much more expensive to fly to Maui during the summer months.