In Chennai, the sky is expected to remain partly cloudy on Tuesday. Some parts of the city may receive light to moderate rain accompanied by thunderstorms during the evening or night.
The maximum temperature is likely to remain around 36-37 degrees Celsius, while the minimum temperature may hover around 27-28 degrees Celsius.
Between August 18 and August 21, temperatures in parts of north interior Tamil Nadu may remain 2-4 degrees Celsius above normal. Temperatures across the rest of Tamil Nadu, Puducherry and Karaikal are expected to remain close to normal.
Fishermen have also been advised to stay away from certain sea areas. Along the southern Tamil Nadu coast and parts of the Gulf of Mannar, winds may reach 45-55 kmph, with gusts up to 65 kmph, between August 18 and 21.
On August 18, squally winds of 45-55 kmph, occasionally reaching 65 kmph, are expected over parts of the southwest Bay of Bengal. Winds of 40-50 kmph, occasionally reaching 60 kmph, may prevail over parts of the central Bay of Bengal.
Similar conditions are expected over parts of the east-central Arabian Sea adjoining the central-west Arabian Sea between August 18 and 21, with winds reaching 45-55 kmph and gusting up to 65 kmph.
The weather department has advised fishermen not to venture into the affected sea areas during the specified period.