<P> The region has a very (tropical climate) with the monsoons playing a major part . The southwest monsoon accounts for most of the rainfall in the region and much of it falls from about June to October . Tamil Nadu and southeast Andhra Pradesh receive rains from the northeast monsoon from about November to February . Much of Andhra Pradesh and Karnataka has a distinct dry season from about October - May when there is not much rainfall . This region also experiences cooler nights from October to March while the days are pleasantly warm . In the northern parts of the region temperatures can fall below 10 degrees Celsius on occasions at night during this time . Days are very hot from March to June when temps can go over 40 degrees . </P> <P> The five states of South India generally follow linguistic boundaries . In addition to these linguistic regions, South India has a number of overlapping traditional geographic regions . Some of these regions are: </P> <Ul> <Li> Bayaluseemae - The plain area of Deccan plateau in Karnataka </Li> <Li> Carnatic - etymologically related to the Deccan, refers to all of South India </Li> <Li> Canara or Karaavali - the Karnataka coast </Li> <Li> Chera Nadu - Western Tamil Nadu and most of modern Kerala </Li> <Li> Chettinadu - Central Tamil Nadu surrounding Sivagangai </Li> <Li> Chola Nadu - Central Tamil Nadu surrounding Thanjavur </Li> <Li> Coromandel Coast - south coastal Andhra Pradesh, north coastal Tamil Nadu and the Puducherry Union Territory </Li> <Li> Deccan - plateau region covering interior Maharashtra, Andhra Pradesh and Karnataka . Includes the Marathwada, Vidarbha, Telangana, Rayalaseema, North Karnataka and Mysore regions . </Li> <Li> Kammanadu - Region south of Krishna river up to Nellore </Li> <Li> Kongu Nadu - Western Tamil Nadu surrounding Coimbatore </Li> <Li> Konkan - coastal region comprising coastal Maharashtra, Goa and part of coastal Karnataka </Li> <Li> Kosta - Coastal districts of Andhra Pradesh </Li> <Li> Malabar region - Northern Kerala </Li> <Li> Malenad - Sahyadri hills between the coast and the plateau in Karnataka </Li> <Li> Mulakanadu - Region to the north of the Godavari river </Li> <Li> Mysore - South Karnataka around Mysore </Li> <Li> North Karnataka - North Karnataka around Dharawad </Li> <Li> Northern Circars - Muslim administrative units in Madras state in British India, namely Chicacole, Rajahmundry, Ellore, Kondapalli and Guntur </Li> <Li> Palnadu - Northern Tamil Nadu and Southern districts of Andhra Pradesh </Li> <Li> Pandya Nadu - Central and southern Tamil Nadu around Madurai </Li> <Li> Raichur Doab - mostly northern Karnataka, between the Krishna and Tungabhadra rivers </Li> <Li> Rayalaseema - Southern Andhra Pradesh consisting of Kurnool, Chittor, Cuddapah and Anantapura districts </Li> <Li> Tondai Nadu - Central Tamil Nadu around Pudukkotai </Li> <Li> Thiruvithaamkoor or Travancore - Southern Kerala </Li> <Li> Tulu Nadu - Coastal districts of Udupi and South Canara in Karnataka </Li> <Li> Velanadu - Places on the banks of Krishna River from Guntur to Srisailam </Li> </Ul> <Li> Bayaluseemae - The plain area of Deccan plateau in Karnataka </Li>

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