As far as the rainfall in North India is concerned, at least 18 people have died due to rain-related incidents as of Sunday in several regions.

The continuous spells have led the government to declare holiday for schools on Monday in six northern districts of Tamil Nadu including Chennai.

The weather department has forecast that the sky condition in Chennai and its suburbs would remain cloudy.

The state governments of Tamil Nadu, Puducherry, and Andhra Pradesh have deployed the frontliners as the shores of three states are preparing for the landfall of Cyclone Mandous.

The state is getting ready to brace up for another round of very heavy downpours from November 10 and the trend would remain nearly for four days. 

After a high-level meeting of ministers and officials, Chief Minister MK Stalin said that Tamil Nadu may get 35 to 75 percent more rain.

The Regional Meteorological Centre in Chennai has predicted that the month of September is likely to get more intense spells.

On Sunday, Chennai and its suburbs had rainy dusk with incessant rainfall and thunderstorms. The sudden downpour has caused major disruption and several areas in the city were waterlogged.

The country's premier weather watchdog has said that this pattern of rainfall would remain from August 1- Monday to August 4 - Thursday. 

Several parts of the city including the downtown and outskirts had witnessed heavy rainfall and the rainfall had inundated important roads in the city.