A trough over south west Bay of Bengal off Tamil Nadu and Sri Lanka coast is expected to bring light showers in the city till Wednesday.

Several parts of Chennai received showers during early hours of Monday and a few roads were water logged. While the Meteorological department’s observatory in Nungambakkam registered a rainfall of 33 mm during the 24-hour period ending 8.30 a.m. on Monday, the facility at Meenambakkam recorded 41 mm during the corresponding period.

The showers helped in sustaining the normal day temperature of 29 degree Celsius in the city.

Meteorological department officials said Nungambakkam has registered 862 mm of rainfall since October 1, which is 131 mm above normal. Similarly, Meenambakkam observatory recorded 897 mm in the same period. During the 12-hour period ending 8.30 p.m., Nungambakkam recorded a rainfall of 5.9 mm and Meenambakkam 1.2 mm.

They said the trough would lead to rain or thundershowers in some locations in the city on Wednesday.