Kadaiyanallur experiences a warm and humid climate year-round, with temperatures gradually increasing from the low twenties in winter months to high thirties in spring. The summer season brings scorching heat, with temperature fluctuations between 34°C to 36°C, while the monsoon months see moderate temperatures ranging from 23°C to 35°C. Autumn is relatively mild, with temperatures dipping slightly to around 24°C to 30°C. Winters are cool and pleasant, with temperatures hovering between 19°C to 32°C. Overall, temperature variations are minimal throughout the year, with an average high of around 34-36°C in spring and summer, and a moderate low of around 23-25°C during winter months.