Archive · 20 Aug 2026
Tamil Nadu Western Ghats May See Rain, Chennai Thunderstorms
A weak weather system near coastal Tamil Nadu may bring some rain.
The Western Ghat districts could get moderate showers from Thursday.
Thunderstorms, lightning and strong winds may happen during the rain.
Chennai could also get short periods of rain on Thursday evening or night.
After that, rain is expected to become lighter and more scattered.
Most other parts of Tamil Nadu should stay dry, although a few local showers are possible.
The weather department does not expect widespread or extremely heavy rain.
Devala and Yercaud received the highest reported rainfall, at six centimetres each.
A weak low-pressure circulation over coastal Tamil Nadu is expected to bring rain over the next few days.
Western Ghat districts may receive moderate rain, thunderstorms, lightning and strong winds from Thursday.
From August 21 to 25, isolated light rain is forecast over Western Ghats and northern coastal districts.
Chennai may see moderate evening or nighttime rain with thunderstorms and lightning on Thursday.
Devala and Yercaud recorded six centimetres of rain each, while Mangalur received five centimetres.
- Who
- The Regional Meteorological Centre in Chennai issued the forecast.
- What
- A weak low-pressure circulation is expected to produce scattered rain, thunderstorms and lightning in parts of Tamil Nadu.
- When
- Moderate rain is expected from Thursday; isolated light rain is forecast from August 21 to 25.
- Where
- The Western Ghats, northern coastal Tamil Nadu and parts of Chennai may receive rain.
- Why
- The weak atmospheric system is influencing moisture movement and cloud formation over the state.
- Expected rainfall
- Moderate rain is possible in one or two Western Ghat districts from Thursday.
- Chennai forecast
- Some areas may receive moderate rain with thunderstorms and lightning during Thursday evening or night.
- August 21–25 outlook
- Light rain is likely at one or two places in Western Ghats and northern coastal districts.
- Widespread rain
- The bulletin does not forecast widespread or extremely heavy rain.
- Highest rainfall
- Devala in the Nilgiris district and Yercaud in Salem district each recorded six centimetres.
- Other rainfall
- Mangalur in Cuddalore district recorded five centimetres.
- Additional hazards
- Strong surface winds may occur during thundershowers in the Western Ghat districts.