Bermuda's average water temperatures: Month F° Visibility Water Colour January 65 150–200' Blue February 65 150–200' Blue March 68 150–200' Blue April 69 150–200' Blue May 75 100–150' Blue June 79 100–110' Blue-green July 83  80–100' Blue-green August 86  60–80' Green September 81  80–100' Blue-green October 75 100–120' Blue November 71 100–120' Blue December 68 150–200' Blue