Looking for the weather, climate conditions and forecast for Tamil Nadu, India? View current (latest) Tamil Nadu weather conditions; see a 7 or 14-day rainfall forecast, get local travel conditions and review Tamil Nadu, India satellite and radar maps, temperature and rainfall statistics for Tamil Nadu.
Best Time to Visit Tamil Nadu: July to September and January to April
Tamil Nadu is heavily dependent on monsoon rains as the climate of the state ranges from dry sub-humid to semi-arid.The advancing monsoon period, South West monsoon from June to September, with strong southwest winds North East monsoon from October to December, with dominant northeast winds dry season from January to May.
The normal annual rainfall of the state is about 945 mm. The climate in most of Tamil Nadu is essentially tropical as it is hottest in April, May, June with the mercury going well over 40°C and coolest in December and January, but not really cold anywhere except in the hills where night temperatures may dip below 5° C. The rains arrive in October and continue till the end of December. In the plains, Tamil Nadu as a rule is either hot and humid or hot and dry and never anything in between.
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