Santorini Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 57 °F14 °C Feb 56 °F14 °C Mar 61 °F16 °C Apr 63 °F17 °C May 68 °F20 °C Jun 81 °F27 °C Jul 81 °F27 °C Aug 82 °F28 °C Sep 77 °F25 °C Oct 72 °F22 °C Nov 69 °F21 °C Dec 61 °F16 °C Humidity Jan 58% Feb 60% Mar 61% Apr 63% May 62% Jun 59% Jul 56% Aug 60% Sep 60% Oct 67% Nov 65% Dec 60% Rain Jan 65mm Feb 48mm Mar 33mm Apr 30mm May 3mm Jun 1mm Jul 3mm Aug 1mm Sep 3mm Oct 9mm Nov 37mm Dec 51mm Clouds Jan 57% Feb 48% Mar 26% Apr 36% May 31% Jun 7% Jul 2% Aug 0% Sep 4% Oct 13% Nov 39% Dec 48% Sun Jan 2UVI Feb 3UVI Mar 5UVI Apr 6UVI May 7UVI Jun 10UVI Jul 10UVI Aug 10UVI Sep 8UVI Oct 5UVI Nov 3UVI Dec 2UVI