Tamil Nadu heavy rainfall alert: Thunderstorms, 40–50 kmph winds forecast for June 10–13
Synopsis
A low-pressure system over South India is pushing heavy rainfall and 40–50 kmph winds into Tamil Nadu's hill districts and beyond. The RMC has flagged Tirunelveli, Kanniyakumari, Coimbatore, the Nilgiris, and six northern districts for intensifying showers through 13 June — with Chennai bracing for evening thunderstorms and temperatures between 38°C and 39°C.
Key Takeaways
The Regional Meteorological Centre (RMC), Chennai has issued a rainfall forecast covering Tamil Nadu , Puducherry , and Karaikal from 10 to 13 June .
Heavy rainfall is expected in the hill areas of Tirunelveli , Theni , Kanniyakumari , Coimbatore , and the Nilgiris .
Surface winds of 40–50 kmph are forecast during thunderstorm activity across affected regions.
Isolated heavy showers are also likely in Vellore , Tirupattur , Krishnagiri , Dharmapuri , Erode , and Salem districts.
Chennai is expected to see evening or night thunderstorms with temperatures between 38°C and 39°C .
Maximum temperatures across the region are expected to remain near normal through 13 June .
The Regional Meteorological Centre (RMC) in Chennai has forecast widespread rainfall across Tamil Nadu, Puducherry, and Karaikal over the next several days, driven by a low-pressure circulation over South India. The weather bulletin, issued on 10 June, warns of thunderstorms, lightning, and gusty surface winds reaching 40–50 kmph at several locations through 13 June.
Wednesday and Thursday Outlook
On Wednesday, 10 June, light to moderate rainfall accompanied by thunderstorms and lightning is likely across isolated parts of Tamil Nadu, Puducherry, and Karaikal. Heavy rainfall is expected at one or two locations in the hilly regions of Tirunelveli, Theni, and Kanniyakumari districts.
The pattern is forecast to persist into Thursday, 11 June, with light to moderate rain at a few places and continued heavy showers in the hill areas of Tirunelveli and Kanniyakumari. Strong winds are expected to accompany the showers on both days.
Intensification Expected in Western and Northern Tamil Nadu
Meteorologists have warned that rainfall is likely to intensify further across western and northern parts of the state in the coming days. The hill areas of Coimbatore district and the Nilgiris are among the regions flagged for heavy rainfall with thunderstorms. Isolated heavy showers are also anticipated in Vellore, Tirupattur, Krishnagiri, Dharmapuri, Erode, and Salem districts, with gusty winds in the 40–50 kmph range.
According to meteorologists, the prevailing weather pattern is linked to the low-pressure circulation over South India, which is drawing moisture into the region and creating favourable conditions for rain-bearing clouds.
Chennai Forecast
For Chennai and its suburbs, the RMC has forecast partly cloudy skies on Wednesday, with light rain and thunderstorms likely during the evening or night hours. The maximum temperature in the city is expected to hover between 38°C and 39°C, while the minimum is likely to remain around 30°C.
The weather department noted there is little likelihood of any significant change in maximum temperatures across Tamil Nadu, Puducherry, and Karaikal between 10 June and 13 June, with daytime temperatures expected to remain near normal levels despite ongoing rainfall activity.
Safety Advisory
Residents across affected districts have been advised to exercise caution during thunderstorm activity, particularly in areas likely to experience strong winds and heavy rain. The combination of reduced visibility, lightning risk, and gusty winds poses a heightened hazard in hilly terrain. This comes amid the broader onset of the southwest monsoon season, when low-pressure systems over peninsular India typically drive the first sustained rainfall spells across the state.
Point of View
Coastal, and inland Tamil Nadu simultaneously. What stands out is the wind warning: 40–50 kmph gusts during thunderstorms in hilly terrain carry real risk for agriculture, power infrastructure, and road connectivity in districts like Tirunelveli and Kanniyakumari. The forecast of near-normal temperatures despite widespread rain also signals that this is a moisture-driven event, not a cooling system — humidity stress will remain high. Authorities in hill districts would do well to pre-position emergency response rather than wait for the showers to intensify.
NationPress
6 Aug 2026
Frequently Asked Questions
Which districts in Tamil Nadu are under heavy rainfall alert?
The hill areas of Tirunelveli, Theni, Kanniyakumari, Coimbatore, and the Nilgiris are under heavy rainfall alert. Isolated heavy showers are also forecast for Vellore, Tirupattur, Krishnagiri, Dharmapuri, Erode, and Salem districts between 10 and 13 June.
What is causing the heavy rainfall in Tamil Nadu?
The rainfall is driven by a low-pressure circulation over South India, which is drawing moisture into the region and creating favourable conditions for rain-bearing clouds, according to the RMC Chennai.
What is the weather forecast for Chennai on June 10?
Chennai is expected to have partly cloudy skies on 10 June, with light rain and thunderstorms likely during the evening or night hours. The maximum temperature is forecast between 38°C and 39°C, with a minimum around 30°C.
How strong are the winds expected during the thunderstorms?
Surface winds of 40 to 50 kmph are forecast during thunderstorm activity in the affected districts, particularly in hilly regions. Residents have been advised to exercise caution during these spells.
Will temperatures change significantly during this rainfall period?
No significant change in maximum temperatures is expected across Tamil Nadu, Puducherry, and Karaikal between 10 and 13 June. Daytime temperatures are anticipated to remain near normal despite the ongoing rainfall activity.
