Sliema Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 59 °F15 °C Feb 59 °F15 °C Mar 63 °F17 °C Apr 64 °F18 °C May 68 °F20 °C Jun 81 °F27 °C Jul 84 °F29 °C Aug 86 °F30 °C Sep 81 °F27 °C Oct 75 °F24 °C Nov 68 °F20 °C Dec 66 °F19 °C Humidity Jan 56% Feb 57% Mar 65% Apr 64% May 64% Jun 63% Jul 65% Aug 64% Sep 65% Oct 66% Nov 62% Dec 63% Rain Jan 33mm Feb 33mm Mar 22mm Apr 12mm May 20mm Jun 0mm Jul 1mm Aug 1mm Sep 24mm Oct 46mm Nov 59mm Dec 21mm Clouds Jan 41% Feb 21% Mar 30% Apr 31% May 30% Jun 10% Jul 1% Aug 1% Sep 20% Oct 19% Nov 54% Dec 37% Sun Jan 2UVI Feb 4UVI Mar 5UVI Apr 7UVI May 8UVI Jun 10UVI Jul 10UVI Aug 10UVI Sep 7UVI Oct 5UVI Nov 3UVI Dec 2UVI