Winters in Lorient are cool and occasionally frosty, with temperatures often below freezing in January and December, but rarely staying below 0°C for an extended period. As the seasons transition into spring, temperatures gradually warm up, with March and April experiencing mild days with highs sometimes reaching 25°C. Summer months from June to August bring pleasant warmth, with July being the hottest month, while September and October return to a more temperate climate before the onset of winter's chill.