Showers will occur at times in the Western, Sabaragamuwa and North-western Provinces and in Kandy, Nuwara-Eliya, Galle and Matara Districts, the Department of Meteorology said.
It said a few showers may occur in Hambantota District as well.
Showers or thundershowers may occur at a few places in Uva Province and in Batticaloa and Ampara Districts during the evening or night.
Meanwhile, fairly strong winds of about 40-45 kmph can be expected at times in western slopes of the central hills, Northern, North-central, and North-western Provinces and in Trincomalee and Hambantota Districts.
The department requested the people to take precautions to minimise damages caused by temporary localized strong winds and lightning during thundershowers.