Fairly heavy falls above 50mm can be expected at some places, they said.
A few showers can be expected in the South-Western coastal areas during the morning too.
Temporary localized strong winds during thundershower are expected and the public is requested to take adequate precautions to minimize damages caused by lightning.
Meanwhile, on the apparent northward relative motion of the sun, it is going to be directly over the latitudes of Sri Lanka during 05th and 15th of April this year.
The nearest areas of Sri Lanka over which the sun is overhead today (05th April) are Hambantota, Katudampe, Nakiyadeniya and Maliduwa about 12:13 noon.