Manila, April 11 -- Warm weather will prevail across the country, the weather bureau said Saturday.

In its 4 a.m. advisory, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said the whole country will experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms.

Moderate winds and moderate seas will prevail over the eastern section of Northern Luzon, while the rest of the archipelago will experience light to moderate winds and slight to moderate seas.

PAGASA forecast the heat index, or the temperature felt by the human body when relative humidity combines with actual air temperature, to peak at 43C in Dumangas, Iloilo.

The heat index in parts of Metro Manila could reach...