Thundershowers will occur in the Western, Sabaragamuwa, Central, North-Western, and Southern Provinces, the Forecasting Division of the National Meteorological Centre said.
They said showers would occur in the Northern province as well.
Thundershowers will occur over the country, particularly during the afternoon or night.
Strong winds up to 45kmph can be expected at times over the western and southern coastal areas and along the western slopes of the central hills.
Therefore, the public is requested to take adequate precautions to minimize damages caused by temporary, localized strong winds and lightning during thundershowers.