Showers or thundershowers will occur over most places of the island in the evening or night, the Department of Meteorology said.
Heavy rainfall about 100 mm are likely at some places in Sabaragamuwa, Uva, Central and North-central provinces and in Galle, Matara and Kaluthara districts.
Showers or thundershowers are likely over coastal areas of Southern, Western and Eastern provinces during the morning too.
General public is kindly requested to take adequate precautions to minimize damages caused by lightning activity and localized strong winds during thundershowers.
Showers or thundershowers will occur at several places in the sea areas around the island. Heavy showers can be expected at some places in the sea areas to the South-west, South and South-east of the island.
Winds will be South-westerly in the sea area extending from Kankasanturai to Potuvil via Mannar, Colombo, Galle and Hambantota and winds will be South-easterly in the other sea areas around the island.
Wind speed will be (20-30) kmph. Wind speed can be increase up to 40 kmph at times in the sea area extending from Galle to Hambantota via Matara.
The sea areas around the island can be moderately rough. Temporarily strong gusty winds (up to 70-80 kmph) and rough seas can be expected during thundershowers.