Tue Jan 20 13:57:29 UTC 2026: # Tamil Nadu Braces for Temperature Drop Followed by Rainfall

The Story:
Tamil Nadu is experiencing a period of unseasonably cool weather, with minimum temperatures dropping 2-3 degrees Celsius below normal. Several regions have reported misty mornings and chilly nights. However, the Regional Meteorological Centre (RMC) forecasts a change in weather patterns, with light to moderate rainfall expected to arrive from January 23, 2026, due to an approaching weather system over the Bay of Bengal. Warmer nights will follow.

Key Points:

  • Minimum temperatures in Tamil Nadu have dropped below normal in the past two days.
  • Tiruttani recorded the lowest minimum temperature in the plains at 15.2 degrees Celsius.
  • The Northeast monsoon has retreated from the region.
  • Rainfall is expected to begin in coastal areas from January 23, 2026, spreading inland over the weekend.
  • Tamil Nadu has recorded 25.8 mm of surplus rainfall since January 1, 2026.

Critical Analysis:
The historical context provided gives insight into the larger weather events that are transpiring across the globe. While Tamil Nadu is bracing for cooler temperature and rain, locations in the US are battling bitter cold and snow. It is hard to infer direct relations between these occurences, but both areas are preparing for extreme weather.

Key Takeaways:

  • Tamil Nadu is currently experiencing a dip in temperature, below normal levels.
  • The shift in weather is attributed to easterly wave activity and an upper air circulation over the Southeast Bay of Bengal.
  • While the Northeast monsoon has retreated, the approaching weather system promises rainfall across the state.
  • The RMC is monitoring the system’s movement to determine the intensity of the expected rainfall.
  • The surplus rainfall recorded since January 1, 2026, suggests a wetter than usual winter season for the region.

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