Gulf Islands National Seashore - Climate

Month Avg High Avg Low Rainfall Water Temp. January 61 42 5.0 64 February 63 45 4.0 64 March 70 52 6.0 66 April 77 60 4.5 72 May 83 66 3.4 78 June 87 71 5.2 81 July 89 74 7.2 83 August 90 74 7.0 85 September 87 70 6.8 84 October 80 60 3.2 81 November 69 50 3.4 72 December 63 44 4.0 64