Tamil Nadu and Puducherry may face rains from December one as a result of the formation of a low pressure area over the Bay of Bengal on November 30, the regional weather office said on Friday.

The system is expected to intensify into a depression later, Deputy Director General of Meteorology, Chennai, S Balachandran, told reporters.

"A low pressure area is likely to form over southeast Bay of Bengal during the next 48 hours. It is very likely to intensify into a depression on November 30 and move towards the Tamil Nadu coast," he said.

This will result in Tamil Nadu and neighbouring Puducherry receiving widespread rains from December 1 to 3, he added.

The forecast for more rains for the southern state and the union territory comes a day after severe cyclonic storm Nivar battered Tamil Nadu and Pudicherry after making a landfall on early Thursday, bringing in heavy showers.

At least three people were killed in Tamil Nadu due to the cyclone in rain-related incidents including tree and wall collapse, while more than a thousand trees were uprooted.

Over the last 24 hours, northwestern districts in Tamil Nadu received rains, with Sholinghur in Ranipet recording the highest rainfall of 23 cm, Balachandran further said.

He also forecast light to moderate rains in Tamil Nadu and Puducherry for the next two days in some places.