Ooty is at a higher altitude than Coimbatore. As altitude increases, temperature decreases due to lower air pressure and less heat retention. Although both are at similar latitudes, elevation causes Ooty to have cooler temperatures while Coimbatore remains hotter at lower elevation.
Class 7 Social Science Exploring Society: India and Beyond
Class 7 Social Science Chapter 3 Climates of India question answer
Though Ooty and Coimbatore lie at similar latitudes in Tamil Nadu, Ooty is situated at a much higher altitude in the Nilgiri Hills. Temperature drops with altitude because the air becomes thinner and holds less heat. Coimbatore, being in the plains, retains more heat and stays warmer. Thus, altitude plays a significant role in temperature variation. The hill station of Ooty enjoys a cool climate year-round, while Coimbatore experiences warmer conditions despite being geographically close.
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