Climate of Tamil Nadu

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Daytime view of an almost lifeless expanse, dry rocks and sand marked only by the odd lone shrub. The dry terrain reaches to a chain of mountains in the far distance, near the horizon. A bank of clouds soars above the void, but it does not appear to hold the promise of rain. A far darker, larger, more turgid cloud bank sits above the distant mountains, above the horizon.
A semi-arid wasteland near Tirunelveli, Tamil Nadu. Monsoon clouds dump torrents of rain on lush forests only kilometres away in windward-facing Kerala. The Agasthyamalai Range mostly stops them from reaching Tirunelveli.
Late daytime view looking far out over an ocean from a beach, which is out of view off the bottom margin. Three-fourths of the shot features a sky marked by heavy cloud cover, which is parting near the middle, revealing a dazzlingly bright cerulean blue sky that darkens near the margins. The ocean is striated with waves coming in parallel to the horizon.
Late-season monsoonal sunset, Coromandel Coast

The Climate of Tamil Nadu, India is generally tropical and features fairly hot temperatures over the year except during the monsoon seasons.


Under the Köppen climate classification the greater part of Tamil Nadu falls under Tropical savanna climate and a smaller portions of the state falls under Humid subtropical climate; the climate of the state ranges from dry sub-humid to semi-arid.



The summer in Tamil Nadu runs throughout April and May and is characterized by intense heat and scant rainfall across the state.


The cold weather commences early in February and comes to an end in the middle of March. The climate in the cold weather is pleasant. The days are bright and sunny the sun is not too hot.

As soon as the sun sets the temperature falls and the heat of the day yields place to cooler weather.


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).



Average temperatures in various cities of Tamil Nadu (°C)[1][2][3]
– Feb)
(Mar – May)
(Jun – Sep)
(Oct – Dec)
City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg
Coimbatore 32 - - - - - - - - - - - -


Average precipitation in various cities of Tamil Nadu (mm)[1][2][3]
(Jan – Feb)
(Mar – May)
Monsoon 1
(Jun – Sep)
Monsoon 2
(Oct – Dec)
City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total



2015 South Indian floods ( mostly affected areas chennai and cuddalore) Chennai received 1,049 mm (41.3 in) of rainfall in November, the highest recorded since November 1918 when 1,088 mm (42.8 in) in of rainfall was recorded.[24][25] The flooding in Chennai city was described as the worst in a century.[26]


2004 Asian tsunami disaster[edit]

Drought & famine[edit]


See also[edit]


  1. ^ a b "Weatherbase". Weatherbase. Retrieved 2007-03--.  Check date values in: |accessdate= (help)
  2. ^ a b "Wunderground". Weather Underground. Retrieved 2007-03--.  Check date values in: |accessdate= (help)
  3. ^ a b "". The Weather Channel. Retrieved 2007-03--.  Check date values in: |accessdate= (help)