Karur experiences a hot and humid climate throughout the year, with temperatures gradually increasing from spring to summer. March marks the beginning of warmer days, with temperatures rising above 40°C on occasion, while April and May are the hottest months, often reaching scorching highs. The summer months of June to August bring moderate temperatures, but humidity remains high. As the monsoon season sets in during September, temperatures drop slightly, but remain warm, followed by a gentle decrease in temperature from October onwards, with November and December experiencing relatively cooler days, though still quite mild.