This link from The Weather Channel
shows the average temperatures in Bermuda by month. Elsewhere on the site, I read that the best time to go is between May and October. We've been to Bermuda 3x -- once each in June, August, and October -- and felt June was the best of the three as it wasn't too hot and wasn't too cool. A group of friends went a couple of years ago in May and loved it.Of course, this can vary from year to year.