The Disaster Management Center (DMC) said that 1024 people have been displaced so far and have been sheltered at temporary locations.
The most number of displaced have been reported from Badulla, Kegalle and Kalutara, the DMC said.
Over 170 houses have been damaged as a result of the adverse weather affecting the country over the past few days.
Landslide warnings were issued for several areas while people living along major rivers were cautioned over the possibility of floods.
The Army, Navy and Air Force were deployed to the most affected areas to provide relief and join the rescue operations.
President Maithripala Sirisena directed the relevant authorities to provide immediate relief to those affected.
Meanwhile, the Department of Meteorology said that the prevailing rainy conditions along with cloudy skies in the Southwestern part of the island is expected to continue during next few days.
Showers or thundershowers will occur at times in the Western, Southern, Sabaragamuwa, Central and North-western provinces on Tuesday.
Showers or thundershowers will occur elsewhere particularly after 2.00 p.m on Tuesday.
Very heavy falls, about 150 mm can be expected at some places in the Sabaragamuwa, Western North-western provinces and in the Galle and Matara districts.
Heavy falls, above 100 mm can be expected at some places, particularly in the Central and Uva provinces and in the Hambantota district, the Department of Meteorology said. (Colombo Gazette)