Drenching rains and overcast skies gripped much of western Luzon and Western Visayas on Tuesday, June 2, 2026, as the Southwest Monsoon — locally called Habagat — tightened its grip over the Philippines' western seaboard. The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) released its 24-hour public weather forecast at 4:00 AM, with the bulletin remaining valid until 4:00 AM on Wednesday, June 3.
According to PAGASA, the Southwest Monsoon is the dominant weather system at play, pushing moisture-heavy winds from the southwest into coastal and inland areas stretching from the Ilocos Region all the way down through Metro Manila and into Western Visayas. The rest of the archipelago — including Mindanao and the eastern sections of Visayas — is expected to contend with isolated rainshowers and thunderstorms driven by localized convective activity rather than large-scale monsoon flow.
Primary Weather Driver
PAGASA identified the Habagat as the singular dominant system shaping today's weather picture across the western Philippines. The agency emphasized that communities situated near rivers, creeks, and hillside terrain face the greatest exposure to flash floods and landslides — the two foremost public safety concerns in the bulletin. Residents in these areas are strongly urged to monitor advisories from their respective local disaster risk reduction and management councils throughout the day.
Luzon Weather Conditions
Provinces Under Direct Monsoon Impact
The provinces of Zambales, Bataan, Cavite, Batangas, and Occidental Mindoro are bearing the full force of the Southwest Monsoon on Tuesday. PAGASA forecast occasional to moderate rains over these areas, accompanied by explicit warnings of possible flash floods and landslides brought on by moderate to heavy rainfall. Local government units in these provinces are expected to monitor river systems and drainage infrastructure closely.
Occidental Mindoro, facing the open southwestern coastline of Luzon, is particularly vulnerable to wind-driven rainfall originating from the southwest. In Cavite and Batangas, where dense communities sit alongside river channels draining from mountainous interiors, PAGASA's flash flood warning carries heightened urgency for both urban and rural barangays.
Metro Manila and Broader Luzon
Metro Manila should brace for a wet Tuesday, with PAGASA forecasting cloudy skies accompanied by scattered rains and thunderstorms. Moderate to at times heavy rainfall is possible, and the same flash flood and landslide warnings apply to the capital region. Commuters and motorists are advised to anticipate reduced road visibility during intense rain episodes and to steer clear of known flood-prone underpasses and low-lying streets.
The forecast also covers the broader expanse of Luzon — from the Ilocos Region and Cordillera Administrative Region in the north, across Central Luzon and CALABARZON, through MIMAROPA, and down to the Bicol Region in the south. PAGASA noted that the monsoon remains the driving force behind rainfall throughout this wide area.
For Extreme Northern Luzon — comprising the northernmost sections of Ilocos Norte and Cagayan, including Batanes and the Babuyan island groups — PAGASA forecasts moderate southwest winds. Coastal waters in this zone are classified as moderate, with wave heights expected to reach between 1.2 and 2.5 meters. Fishing communities and mariners operating in these northern waters are advised to exercise appropriate caution before heading out to sea.
Visayas Weather Conditions
Western Visayas Under Monsoon Influence
Western Visayas — covering the provinces of Iloilo, Capiz, Aklan, Antique, Guimaras, and Negros Occidental — falls under the same direct monsoon influence as Metro Manila and the rest of Luzon, according to PAGASA. Residents across this region should expect cloudy skies with scattered rains and thunderstorms, with moderate to at times heavy rainfall in the forecast. PAGASA specifically flagged the mountainous interior of Negros Occidental and the eastern highlands of Iloilo as areas at elevated risk for flash floods and landslides.
Rest of Visayas Including Negros Oriental
The eastern and remaining portions of the Visayas island group — including Cebu, Bohol, Leyte, Samar, Negros Oriental, and Siquijor — are not directly under the Southwest Monsoon's influence today, PAGASA said. These areas will instead see partly cloudy to cloudy skies with isolated rainshowers or thunderstorms generated by localized convective systems. While the overall threat level is considerably lower than in the western portions of the country, PAGASA cautioned that flash floods remain possible during particularly intense thunderstorm episodes. Residents are reminded not to dismiss the potential for sudden, localized downpours.
Mindanao Weather Conditions
All of Mindanao falls under the "rest of the country" classification in PAGASA's Tuesday bulletin. The island group will experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms fueled by localized thunderstorm activity. This covers all major administrative regions — including Davao Region, Northern Mindanao, the Zamboanga Peninsula, SOCCSKSARGEN, Caraga, and the Bangsamoro Autonomous Region in Muslim Mindanao.
Although the threat level across Mindanao is comparatively mild, PAGASA still warned that flash floods are possible in areas experiencing severe thunderstorms. Communities near river systems and low-lying zones should remain vigilant to rapidly developing weather conditions throughout the day.
Temperature and Humidity Data
PAGASA's weather station at Science Garden in Diliman, Quezon City recorded a maximum temperature of 30.4°C at 3:00 PM the previous day, with a minimum of 25.7°C logged at 5:00 AM. Relative humidity over the same 24-hour period — ending at 8:00 PM — ranged from a high of 94 percent down to a low of 75 percent. These warm and humid readings are consistent with conditions typically associated with the active southwest monsoon season.
Wind and Sea Conditions
PAGASA divided the country into two wind and sea condition zones for today's forecast. Over Extreme Northern Luzon, moderate southwest winds are expected, with coastal waters running moderate and wave heights ranging between 1.2 and 2.5 meters. Fishing vessels and small watercraft in this area are urged to take precautions before venturing offshore.
Across the rest of the Philippines, PAGASA forecast light to moderate winds blowing from the southeast to southwest direction, with coastal waters described as slight to moderate and wave heights falling between 0.6 and 2.5 meters. All mariners are encouraged to verify sea conditions before departure, especially given the active monsoon environment prevailing over much of the country.
Astronomical and Tidal Data for Metro Manila
According to PAGASA, sunrise over Metro Manila today is set for 5:26 AM, with sunset at 6:22 PM. The moon is scheduled to rise at 8:08 PM and set at 6:36 AM, carrying a 96-percent illumination — just shy of a full moon. Tidal data for Manila Bay, sourced from the National Mapping and Resource Information Authority (NAMRIA), shows a high tide of 1.23 meters at 10:25 AM and a low tide of -0.16 meters at 7:18 PM.
Safety Advisories
PAGASA's flash flood and landslide warnings should be treated as serious alerts by all residents in the affected zones. Those living in proximity to rivers, creeks, or elevated terrain — especially in Zambales, Bataan, Cavite, Batangas, and Occidental Mindoro — should monitor water levels closely and be prepared to respond quickly to evacuation orders issued by local authorities. Metro Manila residents in flood-prone barangays and Western Visayas communities susceptible to street flooding during heavy monsoon rains should likewise maintain readiness.
Motorists are advised to slow down in low-visibility conditions, avoid roads known to flood rapidly, and stay tuned to real-time updates from local disaster risk reduction and management councils. Those engaged in maritime and fishing activities should check the latest sea condition reports before putting out to sea.
Originally reported by: breakingnewsnegor.com