Southwest Monsoon Brings Isolated Rain, Thunderstorms Nationwide

PAGASA says the Southwest Monsoon is affecting the western section of Northern Luzon on 15 July 2026, bringing partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, moderate south to southwest winds, and coastal waters of northern and western Luzon at 1.2–2.5 meters; severe thunderstorms may cause flash floods or landslides. This forecast covers Metro Manila and the rest of the country but notes stronger monsoon effects over western Northern Luzon.

Locally, the forecast is relevant to La Union because the province lies within the western section of Northern Luzon cited by PAGASA; coastal communities can expect the same moderate seas and the possibility of heavy or isolated thunderstorms that could produce flash floods or landslides during severe activity. PAGASA issued this daily weather bulletin at 4:00 AM on 15 July 2026.

Key details from PAGASA’s bulletin:

• Weather: Partly cloudy to cloudy with isolated rainshowers or thunderstorms across the country; heavier activity over western Northern Luzon.
• Wind and seas: northern and western Luzon have moderate winds (south to southwest) and coastal waters 1.2–2.5 m; the rest of the country sees light to moderate winds and slight to moderate seas (0.6–1.5 m).
• Hazards: Possible flash floods or landslides during severe thunderstorms, per PAGASA’s impact note.
• Observations: PAGASA recorded a 24-hour maximum temperature of 33.3°C and a minimum of 24.2°C at its Diliman station.

PAGASA will continue to update forecasts and advisories as conditions evolve; this bulletin is the agency’s official daily weather outlook for 15 July 2026.

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SOURCE: PAGASA