which are the rainiest month for the coastal district of Tamilnadu
Answers
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The state has three distinct periods of rainfall: advance rainfall ; rainfall from the tropical cyclones emerging in the neighbourhood of the Andaman islands during the Retreat of Monsoons(October–November); and the North East monsoon during the months of October–December, with dominant northeast monsoon winds from the western disturbances emerging over the Mediterranean Sea. The dry season is from February to early June.
Tamil Nadu has rain during the monsoon season due to the southwest trade winds which blow towards the northern hemisphere. Tamil Nadu receives rainfall in the winter season due to northeast trade winds. The normal annual rainfall of the state is about 945 mm (37.2 in) of which 48% is through the North East monsoon,and 32% through the South West monsoon. Since the state is entirely dependent on rains for recharging its water resources, monsoon failures lead to acute water scarcity and severe drought.
Tamil Nadu is classified into seven aggro-climatic zones: north-east, north-west, west, southern, high rainfall, high altitude hilly,and Cauvery Delta (the most fertile agricultural zone).
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