Showery weather conditions are expected to enhance over the island due to an atmospheric disturbance over the Southeast Bay of Bengal Sea area, the Department of Meteorology says.
Additionally, the North-East monsoon is gradually getting established over the island.
As a result, showers or thundershowers are expected at times in Northern, Eastern, Southern, North-central and Uva provinces.
Showers or thundershowers will occur at several places in other provinces of the island after 01.00 p.m.
Heavy showers of about 100mm are likely at some places in Eastern, Central, Uva and Sabaragamuwa provinces and in Galle and Matara districts.
The general public is advised to take adequate precautions to minimize damages caused by temporary localized strong winds and lightning during thundershowers.