The convergence of multiple weather systems is currently destabilizing conditions across the Philippines. While a low-pressure area (LPA) positioned over the coastal waters of Rapu-Rapu, Albay is the primary driver for much of Luzon, the Southwest Monsoon (Habagat) and easterlies are simultaneously pushing moisture into the western and southern sections of the archipelago.
LPA and Easterlies Impacting Luzon
According to a 4 a.m. advisory from Pagasa, the LPA is responsible for cloudy skies with scattered rain and thunderstorms across a broad swath of the mainland. The affected areas include Metro Manila, Central Luzon, CALABARZON, the Bicol Region, and the island provinces of Oriental Mindoro, Occidental Mindoro, Romblon, and Marinduque.
Further north, the easterlies are the dominant force. In Northern Luzon, specifically within Isabela and the Cagayan Valley, residents can expect cloudy skies with scattered rain and thunderstorms. Other areas, including the Ilocos Region, the Cordillera Administrative Region, and the remainder of the Cagayan Valley, will see partly to mostly cloudy skies with isolated thunderstorms.
The agency has issued a specific warning for areas experiencing moderate to heavy rainfall, noting that these conditions increase the risk of landslides or flash floods.
Southwest Monsoon and Regional Forecasts
While the LPA centers on the east, the Southwest Monsoon (Habagat) is impacting the western section of Luzon. GMA News reported on July 28, 2026, that Bataan, Zambales, and the Ilocos Region are facing cloudy skies with scattered rains and thunderstorms. Similar to the LPA-affected areas, these regions are at risk for flash floods or landslides during periods of moderate to heavy rain.
The Habagat is also influencing conditions in Palawan, the Cordillera Administrative Region, and several provinces including Pampanga, Tarlac, Bulacan, Cavite, and Batangas, where partly cloudy to cloudy skies with isolated rain showers or thunderstorms are expected. Pagasa noted that flash floods or landslides may occur during severe thunderstorms in these areas.
Beyond Luzon, the easterlies are bringing scattered rains and thunderstorms to the Davao Region, Caraga, and Eastern Visayas. The potential for flash floods and landslides remains a concern in these southern and eastern sectors as well due to moderate to at times heavy rains.
Wind and Coastal Water Conditions
The atmospheric pressure systems are creating varying wind patterns across the country. In the western section of Luzon, wind speeds are moderate, moving in a southwest to southeast direction, with coastal waters remaining moderate. The rest of Luzon is experiencing light to moderate winds moving south to southeast, resulting in slight to moderate coastal waters.
For those in Visayas and Mindanao, winds are light to moderate and moving in a south to southwest direction, with coastal waters described as slight to moderate.
| Region | Primary Weather Driver | Expected Condition |
|---|---|---|
| Bicol / Metro Manila / CALABARZON | LPA / Easterlies | Cloudy with scattered rain/thunderstorms |
| Ilocos / Zambales / Bataan | Southwest Monsoon (Habagat) | Cloudy with scattered rains/thunderstorms |
| Eastern Visayas / Caraga / Davao | Easterlies | Cloudy with scattered rains/thunderstorms |
| Rest of the Country | Localized Thunderstorms | Partly cloudy to cloudy with isolated rain |
As of the most recent updates, the rest of the country continues to experience partly cloudy to cloudy skies with isolated rain showers caused by localized thunderstorms. Pagasa maintains that flash floods or landslides may still occur during severe thunderstorms regardless of the primary weather system in place.
Additional astronomical data provided by GMA News indicates that sunrise will be at 5:38 a.m. and sunset will be at 6:27 p.m.
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