Byron Bay Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 84 °F29 °C Feb 81 °F27 °C Mar 81 °F27 °C Apr 75 °F24 °C May 72 °F22 °C Jun 68 °F20 °C Jul 68 °F20 °C Aug 68 °F20 °C Sep 72 °F22 °C Oct 75 °F24 °C Nov 80 °F27 °C Dec 81 °F27 °C Humidity Jan 66% Feb 66% Mar 73% Apr 69% May 65% Jun 67% Jul 67% Aug 63% Sep 62% Oct 64% Nov 63% Dec 69% Rain Jan 13mm Feb 21mm Mar 66mm Apr 36mm May 22mm Jun 229mm Jul 20mm Aug 16mm Sep 12mm Oct 20mm Nov 9mm Dec 70mm Clouds Jan 13% Feb 50% Mar 51% Apr 33% May 29% Jun 46% Jul 8% Aug 14% Sep 11% Oct 36% Nov 27% Dec 42% Sun Jan 13UVI Feb 9UVI Mar 8UVI Apr 6UVI May 5UVI Jun 4UVI Jul 4UVI Aug 5UVI Sep 7UVI Oct 9UVI Nov 11UVI Dec 10UVI