Sundapalaiyam experiences mild winters with temperatures ranging from 8-11°C in January and December, while summers are hot with highs reaching up to 38°C in April, May, and March. The temperature gradually cools down in the monsoon season, June to August, but stays relatively consistent throughout the year. Winters are cool and pleasant, with a noticeable drop in temperatures from February onwards. The summer months see a sharp rise in temperature, with July and August being marginally cooler than the preceding months. Autumn and spring seasons have mild temperatures, ranging from 13-15°C to 32-38°C respectively.