An average temperature as high as 35- 37 degrees Celsius, shower and thunderstorm are forecast in the regions at nights.
From April 28 to May 1, temperature is expected to drop down 31- 35 degrees Celsius.
However, a high-intensity heatwave is forecast to continue in the western part of the Northern and several mountainous areas of the Central regions within next ten days.
Thunderstorm, hail, lightning and a gusty wind are predicted in some places ahead of the hot spell moving hot and muggy weather.
