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Heavy Rain Alert in Chennai: Prepare for Overcast Weather, Sprinkles, and Potential Thunderstorms

In the metropolis of Chennai, on September 20, 2025, the weather was cloudy and wet, featuring rainfall and rolling thunderstorms. The temperature hovered around 25.6°C, while humidity reached 93% and light winds blew from the southwest, resulting in a damp, sweltering atmosphere all day long.

Anticipate Cloud Cover, Intermittent Rainfall, and Potential Thunderstorms in Chennai
Anticipate Cloud Cover, Intermittent Rainfall, and Potential Thunderstorms in Chennai

Heavy Rain Alert in Chennai: Prepare for Overcast Weather, Sprinkles, and Potential Thunderstorms

Headline: Wet Weather Ahead: Thunderstorms, Rain, and High Humidity Forecasted in Chennai

Subhead: Residents urged to prepare for continued wet weather and potential disruptions

As the city of Chennai braces for the upcoming week, residents are advised to prepare for wet weather conditions, including thunderstorms, rain, and high humidity levels. According to the regional meteorological centre, the city will likely experience normal to above-normal rainfall on September 21, 2025, as part of a wetter-than-average September in India.

On September 20, 2025, the weather in Chennai is partly cloudy with intermittent rain and thunderstorms. Nungambakkam records a temperature of 31°C, while Arumbakkam reaches 34.1°C. Maximum temperatures are expected to reach 32-33°C, while minimums will hover around 25-26°C. Humidity levels vary across the city, with some stations reporting 49%.

Thunderstorms and lightning with gusty winds reaching 30-40 kmph are forecasted in some areas. Health advisories recommend carrying rain protection due to 80-90% precipitation chances throughout the week. Potential waterlogging in low-lying areas during heavy shower periods is possible.

Residents should be aware of the high humidity levels combined with warm temperatures, which may cause discomfort. It is advised to stay adequately hydrated and wear light, breathable clothing. Visibility is 3 miles due to fog and haze in the morning.

The weather station predicts that wind speeds remain gentle at 5.3 kmph from the southwest, with occasional gusts reaching 8.78 kmph. Continuous rainfall helps maintain acceptable air quality levels by washing away pollutants. As of now, the air quality in Chennai remains satisfactory. However, it's important to note that the air quality in Hyderabad remains satisfactory with an AQI of 60.

Residents should prepare for continued wet weather with thunderstorm activity throughout the week. The extended forecast indicates persistent shower activity and continued rainy conditions. With potential risks of heavy rain and related disruptions in some regions, it's crucial for everyone to stay informed and take necessary precautions to ensure their safety.

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