Osijek Weather OverviewScoresFors & AgainstsWeatherPhotos Osijek has a warm-summer humid continental climate . Average Temperature Jan 34 °F1 °C Feb 46 °F8 °C Mar 59 °F15 °C Apr 64 °F18 °C May 64 °F18 °C Jun 80 °F27 °C Jul 81 °F27 °C Aug 84 °F29 °C Sep 74 °F24 °C Oct 70 °F21 °C Nov 57 °F14 °C Dec 43 °F6 °C Humidity Jan 79% Feb 72% Mar 56% Apr 69% May 78% Jun 81% Jul 73% Aug 67% Sep 66% Oct 69% Nov 80% Dec 79% Rain Jan 30mm Feb 13mm Mar 8mm Apr 48mm May 60mm Jun 57mm Jul 50mm Aug 31mm Sep 35mm Oct 18mm Nov 26mm Dec 26mm Clouds Jan 88% Feb 49% Mar 63% Apr 59% May 66% Jun 39% Jul 37% Aug 26% Sep 45% Oct 31% Nov 67% Dec 59% Air quality US AQI Jan 28 Feb 23 Mar 21 Apr 22 May 17 Jun 18 Jul 18 Aug 21 Sep 21 Oct 28 Nov 22 Dec 24 Sun Jan 1UVI Feb 2UVI Mar 3UVI Apr 4UVI May 4UVI Jun 7UVI Jul 7UVI Aug 7UVI Sep 5UVI Oct 3UVI Nov 2UVI Dec 1UVI