Tamarindo Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 88 °F31 °C Feb 88 °F31 °C Mar 90 °F32 °C Apr 90 °F32 °C May 86 °F30 °C Jun 86 °F30 °C Jul 86 °F30 °C Aug 86 °F30 °C Sep 84 °F29 °C Oct 82 °F28 °C Nov 85 °F30 °C Dec 86 °F30 °C Humidity Jan 74% Feb 73% Mar 69% Apr 75% May 90% Jun 93% Jul 89% Aug 91% Sep 94% Oct 97% Nov 89% Dec 83% Rain Jan 3mm Feb 2mm Mar 4mm Apr 22mm May 145mm Jun 137mm Jul 137mm Aug 112mm Sep 156mm Oct 191mm Nov 76mm Dec 27mm Clouds Jan 8% Feb 22% Mar 29% Apr 35% May 81% Jun 63% Jul 49% Aug 61% Sep 75% Oct 74% Nov 51% Dec 19% Sun Jan 10UVI Feb 11UVI Mar 12UVI Apr 11UVI May 7UVI Jun 10UVI Jul 10UVI Aug 10UVI Sep 9UVI Oct 8UVI Nov 10UVI Dec 9UVI