As the Christmas week begins, the state weather bureau PAGASA reported today, December 22, 2025, that three distinct weather systems—the Shear Line, the Northeast Monsoon (Amihan), and the Easterlies—are currently influencing the country’s weather patterns, bringing scattered rains and potential flood risks to several regions.
Major Weather Drivers
- Shear Line: This system is currently affecting the eastern sections of Northern and Central Luzon.
- Northeast Monsoon (Amihan): Dominating the rest of Northern Luzon, bringing cooler winds and steady rain.
- Easterlies: Warm winds from the Pacific are impacting the rest of the country, including Visayas and Mindanao.
Regional Weather Breakdown
| Area | Weather Condition | Primary Cause | Potential Impact |
| Isabela, Quirino, Nueva Vizcaya, Kalinga, Mountain Province, Ifugao, Aurora, Nueva Ecija, Bulacan, Rizal, & Quezon | Cloudy with scattered rains & isolated thunderstorms | Shear Line | Possible flash floods or landslides |
| Visayas, MIMAROPA, Bicol Region, Dinagat Islands, & Surigao del Norte | Cloudy with scattered rains & thunderstorms | Easterlies | Possible flash floods or landslides |
| Ilocos Norte, rest of Cagayan Valley, & rest of CAR | Cloudy with rains | Northeast Monsoon | Possible flash floods or landslides |
| Partly cloudy to cloudy with isolated rain showers | Partly cloudy to cloudy with isolated rain showers | Shear Line | Flooding during severe thunderstorms |
| Rest of Ilocos Region | Partly cloudy to cloudy with isolated light rains | Northeast Monsoon | No significant impact |
| Rest of the Philippines | Partly cloudy to cloudy with isolated rainshowers | Easterlies | Metro Manila & the rest of Central Luzon |
Marine and Wind Conditions
Seafarers and coastal residents should remain vigilant as the Northeast Monsoon strengthens:
- Extreme Northern Luzon: Strong to Gale-force winds with Rough to Very Rough seas (up to 4.5 meters).
- Rest of Northern & Central Luzon: Moderate to Strong winds with Moderate to Rough seas (up to 3.4 meters).
- Rest of the Country: Light to Moderate winds with Slight to Moderate seas.
Flood Advisories
PAGASA has maintained General Flood Advisories for several regions, including CAR, Region 2, Region 3, Region 5, Region 8, and CARAGA. Residents in low-lying areas and near mountain slopes are advised to monitor local alerts, as moderate to heavy rains could trigger sudden landslides or rising river levels.
Temperature Check: Yesterday’s temperatures peaked at 29.5°C at 11:00 AM, with a cool minimum of 23.4°C recorded early this morning. Humidity remains high, peaking at 97%.