May 26, Colombo (LNW): Southwest Monsoon is gradually establishing across the island, an increase in rainfall over the southwestern parts of the island is expected, the Department of Meteorology said.
Showers or thundershowers will occur at times in Western, Sabaragamuwa and North-western provinces and in Galle, Matara, Kandy and Nuwara-Eliya districts. Heavy falls about 100 mm are likely at some places in these areas.
Showers or thundershowers may occur at a few places in Uva province and in Ampara and Batticaloa district after 1.00 pm.
Fairly strong winds about (30-40) kmph can be expected at times over Western slopes of the central hills, Northern, North-central, North-western and Southern provinces and in Trincomalee 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 in the other sea areas 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 Chilaw via Mannar and from Matara to Pottuvil via Hambantota. Wind speed can increase up to 50 kmph at times in the other sea areas around the island.
State of Sea: The sea areas off the coasts extending from Kankasanthurai to Chilaw via Mannar and from Matara to Pottuvil via Hambantota will be rough at times. The other sea areas around the island will be fairly rough at times.
The wave height may increase about (2.0 – 2.5) meters in the sea areas off the coast extending from Hambantota to Pottuvil (this is not for land area).
Temporarily strong gusty winds and very rough seas can be expected during thundershowers.