MANILA – The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) forecasts continued rainy conditions across various regions on Saturday, December 20, 2025, due to the combined influence of three weather systems: the shear line, northeast monsoon (amihan), and easterlies. While no tropical cyclones are monitored, the setup could lead to occasional heavy bursts triggering flash floods or landslides in susceptible areas.
The shear line will affect eastern sections of Luzon and Visayas, bringing cloudy skies with scattered rains and thunderstorms. The amihan will drive light rains over Northern Luzon, while easterlies contribute isolated thunderstorms nationwide, especially in the afternoon or evening.
Regional Weather Breakdown
- Northern Luzon (Cagayan Valley, Cordillera, Ilocos Region): Cloudy with light rains (amihan dominant).
- Eastern Luzon & Visayas (Bicol, Eastern Visayas, Quezon, Aurora): Cloudy with scattered rains/thunderstorms (shear line primary).
- Metro Manila & Rest of Luzon: Partly cloudy to cloudy with isolated rain showers.
- Mindanao: Partly cloudy to cloudy with isolated thunderstorms (easterlies/ITCZ fringe).
PAGASA advises vigilance in flood-prone and mountainous zones, with moderate to rough seas possible along northern and eastern coasts (small vessels cautioned).
As the holiday weekend approaches with travel and outdoor plans, stay dry and updated—rain may dampen some festivities, but safety keeps the spirit bright.
Weather Systems Snapshot (December 20, 2025):
| System | Main Impact Areas | Conditions |
|---|---|---|
| Shear Line | Eastern Luzon & Visayas | Scattered rains/thunderstorms |
| Amihan | Northern Luzon | Light rains |
| Easterlies | Nationwide (isolated) | Thunderstorms possible |