Showers will occur at times in the Western, Sabaragamuwa, Central, North-western and Southern provinces, the Department of Meteorology has stated.
Showers or thundershowers may occur at a several places elsewhere after 2.00 pm.
The department also stated that showers will occur at times in the sea areas off the coast extending from Colombo to Potuvil via Galle, Matara and Hambantota.
Showers or thunder showers may occur at a few places in the other sea areas.
Winds will be south-westerly in direction and speed will be 30-40 kmph, it added.
The sea area extending from Mannar to Colombo via Puttalam and the sea area extending from Matara to Potuvil via Hambantota can be fairly rough at times as the wind speed can increase up to 50 kmph.