May 19, Colombo (LNW): South-West monsoon is gradually getting established over the island, and showers or thundershowers, therefore, will occur at times in Western, Sabaragamuwa, Central and North-western provinces and in Galle and Matara districts, the Department of Meteorology said.
Several spells of showers will occur in Northern province and in Anuradhapura and Hambanthota districts.
Showers or thundershowers may occur at a few places in Uva and Eastern provinces and in Polonnaruwa district after 2.00 pm.
Fairly strong winds about (30-40) kmph can be expected at times over Western slopes of the central hills, Northern, North-central and North-western provinces and in Hambantota district.
The general public is kindly requested to take adequate precautions to minimise damage caused by temporary localised strong winds and lightning during thundershowers.
Marine Weather:
Condition of Rain: Showers or thundershowers will occur at several places in the sea areas off the coast extending from Puttalam to Hambantota via Colombo and Galle. Showers or thundershowers may occur at a few places elsewhere around the island in the evening or night.
Winds: Winds will be southwesterly. Wind speed will be (30-40) kmph. Wind speed can increase up to (50-60) kmph at times in the sea areas off the coast extending from Kankasanthurai to Puttalam via Mannar and from Hambantota to Pottuvil. Wind speed can increase up to 50 kmph at times in the sea areas off the coast extending from Puttalam to Hambantota via Colombo and Galle and from Kankasanthurai to Trincomalee.
State of Sea: The sea areas off the coasts extending from Trincomalee to Pottuvil via Kankasanthurai, Puttalam, Colombo, Galle and Hambantota will be rough at times. The other sea areas around the island can be moderate.
The wave height may increase (about 2.0 – 2.5m) in the sea areas off the coast extending from Mannar to Pottuvil via Puttalam, Colombo, Galle and Hambantota (this is not for land area).
Temporarily strong gusty winds and very rough seas can be expected during thundershowers.