Which part of India does experience the highest diurnal range of temperature and why?

The northwestern part of India, notably the Thar Desert, encounters the highest diurnal temperature range due to specific factors. The region’s arid climate with low humidity and minimal vegetation facilitates rapid heat absorption during the day and quick cooling at night. Additionally, the desert’s sandy terrain lacks heat retention capacity, causing swift temperature fluctuations between day and night. These conditions contribute to the substantial variation in temperatures, marking the area with the highest diurnal temperature range in India.