Christchurch Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 73 °F23 °C Feb 71 °F22 °C Mar 66 °F19 °C Apr 59 °F15 °C May 59 °F15 °C Jun 52 °F11 °C Jul 54 °F12 °C Aug 54 °F12 °C Sep 55 °F13 °C Oct 57 °F14 °C Nov 65 °F19 °C Dec 64 °F18 °C Humidity Jan 63% Feb 61% Mar 70% Apr 69% May 66% Jun 64% Jul 68% Aug 62% Sep 63% Oct 64% Nov 62% Dec 60% Rain Jan 13mm Feb 19mm Mar 20mm Apr 23mm May 22mm Jun 133mm Jul 46mm Aug 29mm Sep 27mm Oct 46mm Nov 26mm Dec 19mm Clouds Jan 47% Feb 32% Mar 52% Apr 49% May 34% Jun 51% Jul 73% Aug 45% Sep 54% Oct 62% Nov 62% Dec 57% Air quality US AQI Jan 23 Feb 23 Mar 23 Apr 35 May 48 Jun 66 Jul 57 Aug 50 Sep 31 Oct 27 Nov 24 Dec 22 Sun Jan 9UVI Feb 8UVI Mar 5UVI Apr 3UVI May 2UVI Jun 1UVI Jul 1UVI Aug 2UVI Sep 3UVI Oct 5UVI Nov 6UVI Dec 7UVI