Ko Pha Ngan Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 79 °F26 °C Feb 79 °F26 °C Mar 81 °F27 °C Apr 82 °F28 °C May 82 °F28 °C Jun 82 °F28 °C Jul 82 °F28 °C Aug 81 °F27 °C Sep 79 °F26 °C Oct 81 °F27 °C Nov 79 °F26 °C Dec 77 °F25 °C Humidity Jan 75% Feb 74% Mar 74% Apr 73% May 76% Jun 76% Jul 73% Aug 75% Sep 76% Oct 74% Nov 73% Dec 75% Rain Jan 95mm Feb 20mm Mar 16mm Apr 34mm May 93mm Jun 198mm Jul 89mm Aug 91mm Sep 133mm Oct 129mm Nov 72mm Dec 29mm Clouds Jan 57% Feb 24% Mar 32% Apr 70% May 82% Jun 96% Jul 78% Aug 96% Sep 90% Oct 75% Nov 69% Dec 58% Sun Jan 8UVI Feb 11UVI Mar 10UVI Apr 8UVI May 7UVI Jun 6UVI Jul 6UVI Aug 6UVI Sep 6UVI Oct 7UVI Nov 8UVI Dec 8UVI