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Tiruvanantapuram has an equable climate because of its proximity to the sea. The sea exerts a moderating influence on the climate of the region.
For most parts of the country, the months of October to November form a period of transition from hot rainy season to dry winter conditions. However, Chennai experiences a lot of rainfall during this period because of the retreating monsoons, and also because of the tropical cyclones.
Jodhpur lies in the north-western part of the country. The Great Indian Desert is located in this region. Due to the presence of sand, the region experiences high diurnal range of temperature. Hence, Jodhpur has a hot desert type of climate.
While it receives scanty rainfall throughout the year, Leh does experience snowfall due to the extremely low temperatures. As a result, it experiences moderate precipitation almost throughout the year.
Being located in the interior parts of the country, Delhi and Jodhpur receive rainfall mostly from the south-west monsoons. Hence, the rains in these regions are confined to the monsoon period. While Tiruvanantapuram and Shillong do receive heavy rains during the monsoons, their proximity to the sea makes them experience rains apart from the ones received during the monsoon period.
Though factors like wind systems, pressure, latitude, altitude, distance from the sea, presence of mountains, etc., are responsible for the presence of variations across the country, the seasonal arrival and retreat of monsoons provides a kind of climatic unity to the entire country. In spite of the differences, a distinct climatic pattern is evident—a climate characterised by hot rainy summers and cold dry winters.