Ko Lanta Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 88 °F31 °C Feb 88 °F31 °C Mar 88 °F31 °C Apr 90 °F32 °C May 88 °F31 °C Jun 88 °F31 °C Jul 88 °F31 °C Aug 86 °F30 °C Sep 86 °F30 °C Oct 84 °F29 °C Nov 86 °F30 °C Dec 86 °F30 °C Humidity Jan 76% Feb 74% Mar 76% Apr 79% May 79% Jun 81% Jul 77% Aug 80% Sep 81% Oct 84% Nov 82% Dec 75% Rain Jan 42mm Feb 15mm Mar 66mm Apr 71mm May 59mm Jun 168mm Jul 46mm Aug 73mm Sep 84mm Oct 186mm Nov 119mm Dec 43mm Clouds Jan 74% Feb 28% Mar 44% Apr 78% May 90% Jun 90% Jul 78% Aug 92% Sep 89% Oct 87% Nov 77% Dec 45% Sun Jan 7UVI Feb 11UVI Mar 11UVI Apr 7UVI May 6UVI Jun 6UVI Jul 7UVI Aug 6UVI Sep 7UVI Oct 7UVI Nov 7UVI Dec 8UVI