The Philippines is expected to experience a day of varied weather conditions, with two major weather systems—the Intertropical Convergence Zone (ITCZ) and a Shear Line—dominating the forecast for Saturday, October 25, 2025, as reported by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
The ITCZ, a known rain-bringing weather system, is currently affecting Palawan, Visayas, and Mindanao. Residents in these areas are advised to brace for cloudy skies with scattered rain and thunderstorms. The weather bureau warns that precipitation could be moderate to heavy at times, significantly increasing the risk of flash floods or landslides. Multiple regions have already been issued General Flood Advisories (GFA), including MIMAROPA (GFA#7), Western Visayas (GFA#9), Central Visayas (GFA#9), and several regions in Mindanao (GFA#9 and GFA#10), underscoring the serious risk of water-related hazards.
Meanwhile, the Shear Line is impacting the extreme northern frontier. Batanes and the Babuyan Islands are expected to experience similar conditions: cloudy skies with scattered rains and thunderstorms, also carrying the potential for flash floods or landslides from moderate to heavy downpours.
In Luzon, the weather story is primarily influenced by the Easterlies. Aurora and Quezon provinces will see cloudy skies with scattered rains and thunderstorms, prompting the same warning for possible flash floods and landslides. The capital region, Metro Manila, and the rest of Luzon, however, can anticipate generally fairer weather with partly cloudy to cloudy skies punctuated by isolated rainshowers or thunderstorms. Even under these conditions, the possibility of flash floods or landslides during severe thunderstorms remains a threat.
Coastal conditions vary across the archipelago. Fisherfolk and maritime travelers in the northern and western sections of Northern Luzon should exercise caution, as northeasterly winds reaching Moderate to Strong (1.8 to 3.1 meters) will make sea travel Moderate to Rough. The rest of the country can expect calmer conditions, with light to moderate winds resulting in slight to moderate coastal waters.
With a minimal temperature recorded at $24.6 \,^{\circ}\text{C}$ and a peak temperature of $30.9 \,^{\circ}\text{C}$ on Friday, the high humidity, which reached $94\%$, is a contributing factor to the afternoon and evening thunderstorm activity. The public is strongly advised to heed the continuous weather advisories and implement precautionary measures, especially those in low-lying and mountainous areas subject to flood warnings.