The Meteorology Department says showers or thundershowers will occur at times in Eastern and Uva provinces and in Hambantota district while several spells of showers will occur in Northern and North-central provinces.
Showers or thundershowers will occur at several places in other provinces of the island after 01.00 p.m.
Fairly heavy showers about 75mm are likely at some places in Central, Uva and Sabaragamuwa provinces and in Galle and Matara districts, it said.