Tulum Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 81 °F27 °C Feb 83 °F29 °C Mar 84 °F29 °C Apr 86 °F30 °C May 88 °F31 °C Jun 90 °F32 °C Jul 90 °F32 °C Aug 90 °F32 °C Sep 90 °F32 °C Oct 88 °F31 °C Nov 84 °F29 °C Dec 82 °F28 °C Humidity Jan 76% Feb 76% Mar 73% Apr 75% May 78% Jun 77% Jul 76% Aug 77% Sep 80% Oct 83% Nov 81% Dec 77% Rain Jan 50mm Feb 20mm Mar 18mm Apr 59mm May 27mm Jun 84mm Jul 29mm Aug 127mm Sep 122mm Oct 116mm Nov 87mm Dec 25mm Clouds Jan 26% Feb 16% Mar 13% Apr 19% May 28% Jun 48% Jul 29% Aug 38% Sep 57% Oct 67% Nov 42% Dec 28% Sun Jan 8UVI Feb 9UVI Mar 11UVI Apr 12UVI May 10UVI Jun 10UVI Jul 11UVI Aug 10UVI Sep 9UVI Oct 6UVI Nov 7UVI Dec 6UVI