Tamil Nadu weather update: Heavy rain lashes Chennai, Karaikal; are schools and colleges closed today due to rain?

Heavy rain has already lashed Chennai and surrounding areas as northeast monsoon activity intensifies across Tamil Nadu, raising concerns over waterlogging, traffic movement and school attendance. Rainwater stagnation was reported beneath Chetpet bridge, while the India Meteorological Department (IMD) has forecast more showers across Chennai and several other districts on Saturday, October 17.

The weather department has warned of heavy to very heavy rain at isolated places in parts of Tamil Nadu, including districts around Chennai. With further spells expected, parents and students are also checking whether schools and colleges have declared a holiday due to rain. However, an IMD weather warning does not automatically mean educational institutions are closed.

Chennai weather today, October 17

Chennai is forecast to experience a generally cloudy sky, with moderate rain and heavy spells at times. Thunderstorms and lightning may accompany showers in some areas, according to IMD's city forecast. The maximum temperature is expected to remain around 32–33°C, with a minimum of about 25–26°C.


The latest spell of rain has also put road conditions in focus, particularly in areas where water tends to collect during intense showers. Commuters should expect possible delays, check traffic advisories and exercise caution around waterlogged stretches and underpasses. Rainfall intensity can differ across the city, so conditions on one route may not reflect those elsewhere.

Tamil Nadu school holidays list: Are schools and colleges closed today?

There is no official announcement received on school holidays yet. Schools and colleges in Chennai and other rain-affected districts should not be assumed closed unless the district administration or education department announces a holiday. No confirmed statewide closure announcement for October 17 was found in the official sources reviewed.

Parents should check updates from Chennai district authorities and their respective schools before sending children out. Holiday declarations can differ between districts, and an order covering schools may not automatically apply to colleges.

Tamil Nadu Weather Update: Which other districts in TN recorded heavy rain?

Some of the heaviest rainfall was recorded in southern and western districts. Adayamadai in Kanniyakumari district received 179.6 mm of rain in the 24 hours ending at 8.30 am on Friday. Pollachi and PWD Makkinampatti in Coimbatore district, along with Periyakulam in Theni, recorded around 15 cm each. Erode also received very heavy rainfall.

For Saturday, IMD has warned of heavy to very heavy rain at isolated places in Nilgiris, Coimbatore, Tiruvallur, Kancheepuram, Villupuram and Ranipet. Chennai, Chengalpattu, Erode, Salem, Madurai, Dindigul, Tirunelveli and several other districts are also under a heavy rain warning.

IMD's rain forecast for the week

IMD expects wet weather to continue over the coming days, with further heavy to very heavy rainfall possible in isolated areas through October 20. Heavy rain warnings extend to October 21 and 22 as well. Thunderstorms, lightning and gusty winds of 40–50 kmph are possible at isolated places across Tamil Nadu, Puducherry and Karaikal.

Residents should monitor official weather alerts and local administration announcements, particularly if travelling through areas prone to waterlogging. For school and college holidays, district-level notifications remain the most reliable confirmation.