By Benny Reyes
MANILA – Several areas across the country are expected to experience rainfall on Monday (12 Jan 2026) as three weather systems continue to affect the Philippines, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
PAGASA said a shear line will bring cloudy skies with scattered rains and isolated thunderstorms over Cagayan, Isabela, Aurora, and Quezon provinces. Residents in these areas are advised to be cautious as moderate to at times heavy rainfall may trigger flash floods or landslides.
The northeast monsoon, locally known as amihan, will continue to influence the Cordillera Administrative Region and the rest of Cagayan Valley, resulting in generally cloudy skies with light rains.
Metro Manila, the Ilocos Region, and the rest of Central Luzon may also experience isolated light rains due to the ongoing amihan.
Meanwhile, the easterlies will affect the remaining parts of the country, bringing isolated rain showers or thunderstorms, particularly in the afternoon or evening.
PAGASA added that moderate to strong winds and moderate to rough sea conditions will prevail over Luzon and the eastern sections of the Visayas and Mindanao. In other areas, winds will be light to moderate, with slight to moderate coastal waters.
As of 2 a.m., PAGASA reported that no low pressure area is being monitored for possible tropical cyclone development.
