May 18, Colombo (LNW): South-West monsoon conditions are gradually getting established over the island, the Department of Meteorology said in its daily weather forecast today (18).
Cloudy skies can be expected over most part of the island.
Showers or thundershowers will occur at times in Western, Sabaragamuwa, North-western, Northern and North-central provinces and in Galle and Matara districts.
Fairly heavy falls above 75 mm are likely at some places in Western, Sabaragamuwa, North-western and Northern provinces.
Showers or thundershowers may occur at several places elsewhere of the island during the evening or night.
Fairly strong winds of about (30-40) kmph can be expected at times over North-western, North-central, Northern and Southern provinces and in Trincomalee district.
The general public is kindly requested to take adequate precautions to minimise damages 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 around the island.
Winds:
Winds will be westerly to south-westerly and wind speed will be (30-40) kmph. Wind speed can increase up to (55-60) kmph at times in the sea areas off the coast extending from Matara to Pottuvil via Hambanthota.
Wind speed can increase up to 50 kmph at times in the sea areas off the coast extending from Matara to Batticaloa via Colombo, Mannar, Kankasanthurai and Trincomalee .
State of Sea:
The sea areas off the coast extending from Matara to Pottuvil via Hambanthota will be rough at times.
The sea areas off the coast extending from Matara to Batticaloa via Colombo, Mannar, Kankasanthurai and Trincomalee will be fairly rough at times.
The swell waves height may increase (about 2.0–2.5 m) in the sea areas off the coast extending from Kaluthara to Pottuvil via Galle and Hambantota (this is not for land area).
Temporarily strong gusty winds and very rough seas can be expected during thundershowers.
