Several spells of showers will occur in Eastern and Uva provinces, as well as in Matale and Polonnaruwa districts, the Department of Meteorology says.
Showers or thundershowers may occur at a few places in Central, Sabaragamuwa and Southern provinces after 4.00 p.m.
Misty conditions can be expected at some places in Central and Sabaragamuwa provinces and Galle and Matara districts during the morning.
The public is urged to take adequate precautions to minimize damages caused by temporary localized strong winds and lightning during thundershowers.
Sea areas:
Showers or thundershowers will occur at several places in the sea areas off the coast extending from Mullaitivu to Hambantota via Trincomalee and Batticaloa.
Showers or thundershowers may occur at a few places in the sea areas off the coast extending from Puttalam to Galle via Colombo during the evening or night.
Winds will be north-easterly or easterly and wind speed will be 20-30 kmph.
Wind speed may increase up to 40-45kmph at times in the sea areas off the coasts extending from Colombo to Mannar via Puttalam.
The sea areas off the coasts extending from Colombo to Mannar via Puttalam can be fairly rough at times
Temporarily strong gusty winds and very rough seas can be expected during thundershowers.