Cancun Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 79 °F26 °C Feb 82 °F28 °C Mar 82 °F28 °C Apr 84 °F29 °C May 86 °F30 °C Jun 88 °F31 °C Jul 90 °F32 °C Aug 90 °F32 °C Sep 88 °F31 °C Oct 86 °F30 °C Nov 82 °F28 °C Dec 81 °F27 °C Humidity Jan 70% Feb 70% Mar 68% Apr 71% May 73% Jun 72% Jul 73% Aug 74% Sep 74% Oct 75% Nov 73% Dec 71% Rain Jan 62mm Feb 21mm Mar 13mm Apr 85mm May 27mm Jun 26mm Jul 51mm Aug 53mm Sep 122mm Oct 107mm Nov 45mm Dec 32mm Clouds Jan 38% Feb 16% Mar 14% Apr 18% May 21% Jun 40% Jul 36% Aug 40% Sep 51% Oct 60% Nov 40% Dec 28% Sun Jan 7UVI Feb 9UVI Mar 11UVI Apr 12UVI May 10UVI Jun 10UVI Jul 10UVI Aug 9UVI Sep 9UVI Oct 7UVI Nov 6UVI Dec 6UVI