Showers or thundershowers will occur at several places in Western, North-western, Sabaragamuwa and Central provinces and in Galle and Matara districts, says the Department of Meteorology.
Wind speed can increase up to (40-50) kmph at times over the island, particularly in the western slope of the Central hills and Northern, North-central, North-western provinces and in Hambantota district.
Showers or thundershowers may occur at a few places in the sea areas extending from Puttalam to Hambantota via Colombo and Galle.
Winds will be South-westerly and wind speed will be (35-45) kmph in the sea areas around the island.
Wind speed can increase up to (50-60) kmph at times in the deep and shallow sea areas extending from Balapitiya to Trincomalee via Colombo and Kankesanturai and from Matara to Batticaloa via Hambantota.
The deep and shallow sea areas extending from Balapitiya to Trincomalee via Colombo and Kankesanturai and from Matara to Batticaloa via Hambantota can be rough at times. The other sea areas around the island can be fairly rough at times.
Temporarily strong gusty winds (up to 70-80 kmph) and very rough seas can be expected during thundershowers.
Naval and fishing communities are requested to be vigilant in this regard.