Oceanic climate
Claremorris has a temperate oceanic climate with cold winters and warm damp summers. The coldest months being January and February and the wettest being December and October. Claremorris received roughly 1,500 hours of sunshine in 2010. Climate in this area has mild differences between highs and lows, and there is adequate rainfall year-round. The Köppen Climate Classification subtype for this climate is "" (Marine West Coast Climate/Oceanic climate).