Busan Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 46 °F8 °C Feb 49 °F10 °C Mar 57 °F14 °C Apr 62 °F17 °C May 72 °F22 °C Jun 75 °F24 °C Jul 79 °F26 °C Aug 86 °F30 °C Sep 79 °F26 °C Oct 72 °F22 °C Nov 63 °F17 °C Dec 50 °F10 °C Humidity Jan 34% Feb 43% Mar 49% Apr 55% May 55% Jun 68% Jul 83% Aug 74% Sep 75% Oct 61% Nov 55% Dec 48% Rain Jan 10mm Feb 30mm Mar 39mm Apr 66mm May 27mm Jun 324mm Jul 140mm Aug 81mm Sep 123mm Oct 47mm Nov 16mm Dec 28mm Clouds Jan 28% Feb 57% Mar 53% Apr 58% May 60% Jun 62% Jul 87% Aug 62% Sep 68% Oct 51% Nov 31% Dec 45% Air quality US AQI Jan 74 Feb 98 Mar 78 Apr 69 May 83 Jun 54 Jul 52 Aug 64 Sep 53 Oct 46 Nov 60 Dec 65 Sun Jan 3UVI Feb 4UVI Mar 5UVI Apr 5UVI May 6UVI Jun 6UVI Jul 6UVI Aug 7UVI Sep 6UVI Oct 5UVI Nov 3UVI Dec 2UVI