Bay Islands Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 79 °F26 °C Feb 82 °F28 °C Mar 82 °F28 °C Apr 84 °F29 °C May 86 °F30 °C Jun 86 °F30 °C Jul 86 °F30 °C Aug 88 °F31 °C Sep 88 °F31 °C Oct 86 °F30 °C Nov 82 °F28 °C Dec 81 °F27 °C Humidity Jan 82% Feb 79% Mar 77% Apr 80% May 81% Jun 80% Jul 81% Aug 80% Sep 80% Oct 80% Nov 82% Dec 82% Rain Jan 48mm Feb 16mm Mar 13mm Apr 17mm May 20mm Jun 20mm Jul 42mm Aug 23mm Sep 45mm Oct 69mm Nov 71mm Dec 98mm Clouds Jan 33% Feb 19% Mar 20% Apr 21% May 39% Jun 39% Jul 35% Aug 35% Sep 38% Oct 55% Nov 41% Dec 40% Sun Jan 8UVI Feb 10UVI Mar 11UVI Apr 12UVI May 10UVI Jun 10UVI Jul 10UVI Aug 10UVI Sep 9UVI Oct 8UVI Nov 7UVI Dec 7UVI