Key Points

Tamil Nadu experienced varied rainfall patterns across different regions. Coastal and northern districts received substantial showers while southern areas remained relatively dry. Puducherry recorded the highest rainfall at 54mm, providing much-needed relief from humid conditions. The India Meteorological Department data shows significant local variations in rainfall distribution across the state.

Key Points: Tamil Nadu Coastal Districts Receive Heavy Rainfall Showers

  • Puducherry recorded highest rainfall at 54mm among all districts
  • Chennai's Nungambakkam received 29.2mm bringing humidity relief
  • Salem district's Sandhiyur agro station measured 28mm rainfall
  • Southern districts like Cuddalore got only 0.1mm showing uneven distribution
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Tamil Nadu's coastal and northern districts receive heavy showers

Chennai and Puducherry get relief from humidity with 54mm and 29mm rainfall respectively, while southern districts see minimal showers as per IMD data.

"Puducherry topped the charts with 54 mm of rainfall - India Meteorological Department"

Chennai, September 1

Tamil Nadu experienced widespread but uneven rainfall between August 31 and September 1, 2025, with heavy showers recorded in coastal and northern districts.

The rainfall activity was concentrated over north coastal Tamil Nadu, Puducherry, and parts of the Salem district, bringing relief from the humid conditions in Chennai and its surrounding areas.

As per India Meteorological Department observatories, Puducherry topped the charts with 54 mm of rainfall, followed by Nungambakkam (Chennai) with 29.2 mm and Salem with 22 mm.

Meenambakkam (Chennai) recorded only 2.1 mm, while Cuddalore received a negligible 0.1 mm. Valparai in Coimbatore district reported 0.6 mm of rain until 5:30 pm, and Tiruchirappalli airport registered only traces of rain.

The Automatic Weather Stations (AWS) highlighted substantial local variations, with Chennai AWS measuring 31 mm, while VIT Chennai (Chengalpattu) received 15.5 mm and New Chennai Township 13.5 mm.

Hosur in Krishnagiri received 5 mm, while Tiruvallur's Jaya Engineering College and Tiruttani each recorded between 5 mm and 2.5 mm, and Mahabalipuram registered 2.5 mm.

From the Agro stations, Sandhiyur in Salem district stood out with 28 mm, while Vamban in Pudukottai recorded 2 mm.

Among ARG stations, Goodwill School in Villivakkam (Tiruvallur) received 14 mm, followed by Poonamallee with 12.5 mm. Kanchipuram district locations, such as ACS Medical College and Hindustan University, saw rainfall of 7.5 mm and 5.5 mm, respectively, while Pudukottai also registered 7.5 mm.

Smaller amounts of 1-3 mm were reported from locations such as Vazhapadi (Salem), Kolapakkam, Chembarambakkam, West Tambaram, Anna University (Chennai), Puzhal, and Cheyyar.

- ANI

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Reader Comments

R
Rohit P
The uneven distribution is concerning. While some areas got good rainfall, places like Cuddalore with only 0.1mm shows how unpredictable monsoon can be in TN.
K
Karthik V
As a farmer from Salem district, the 28mm in Sandhiyur is excellent news for our crops. Hope the northern districts continue to receive good showers this season.
S
Sarah B
The detailed rainfall data from different stations is impressive! Shows how advanced our meteorological department has become. Great work by IMD 👍
A
Arjun K
While the rainfall is welcome, I hope the corporation is ensuring proper drainage in Chennai. Last time heavy rains caused waterlogging in many areas. Prevention is better than cure!
M
Meera T
The variation between Nungambakkam (29.2mm) and Meenambakkam (2.1mm) within the same city is fascinating! Weather patterns can be so localized sometimes 🌧️

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