Rajapalaiyam experiences a warm and humid climate year-round, with temperatures steadily rising throughout the winter months of January and February. As spring approaches in March and April, the mercury climbs even higher, often reaching scorching highs above 40°C. Summer is equally sweltering, with temperatures consistently staying above 30°C from May to August. The late summer months of September and October see a slight drop in temperature, but still remain warm and humid. As winter returns in November and December, the temperature cools down slightly, but remains mild compared to the scorching summers.