Nippy mornings are set to come back for Chennai. The low pressure trough in the bay had brought in warmer than normal conditions over the last few days or so in Chennai.
The slightly overcast conditions had reduced the radiation back from ground providing the warmer than normal minimum temperatures. Bay is expected quite consequent to the availability of poor moisture along the Peninsular coast.
The next few days would be fairly dry with clear skies. Most of North Tamil Nadu could see the return of early morning cold in the next couple of days. Places in the interiors could see minimum temperatures drop to sub 20 degrees. Day time temperature could be warm thanks to the clear skies though lower humidity would make it comfortable afternoons.