Home Tamil Nadu All Districts Meteorological Data Rainfall Annual Rainfall 2021
Sample Data Format
 District-wise Actual and Normal Rainfall by Season in Tamil Nadu
(2020-2021) 
 (In mm) 
 District  Pre-Monsoon Period
(1st March to 31st May 2020) 		  South-West Monsoon Period
(1st June to 30th Sept. 2020) 		  Post Monsoon Period
(1st Oct. to 31st Dec. 2020) 		  Winter Season
(1st Jan. to 28th Feb. 2021) 		  Annual 
 Actual  Normal  %age Deviation  Actual  Normal  %age Deviation  Actual  Normal  %age Deviation  Actual  Normal  %age Deviation  Actual  Normal 
 Ariyalur                             
 Chennai                             
 Coimbatore                             
 Cuddalore                             
 Dharmapuri                             
 Dindigul                             
 Erode                             
 Kancheepuram / Kanchipuram                             
 Kanyakumari                             
 Karur                             
 Krishnagiri                             
 Madurai                             
 Nagapattinam                             
 Namakkal                             
 Perambalur                             
 Pudukkottai                             
 Ramanathapuram                             
 Salem                             
 Sivaganga                             
 Thanjavur                             
 The Nilgiris                             
 Theni                             
 Thiruvallur                             
 Thiruvarur                             
 Thoothukkudi                             
 Tiruchirappalli                             
 Tirunelveli  122.60  153.90  -20  172.30  128.40  34  477.60  491.40  -3  419.80  68.90  509  1192.30  842.60 
 Tiruppur                             
 Tiruvannamalai                             
 Vellore                             
 Viluppuram                             
 Virudhunagar                             
 Tamil Nadu                             
 
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