Country: Philippines Source: International Federation of Red Cross and Red Crescent Societies Please refer to the attached file. Description of the Event Date when the trigger was met 27-08-2026 What happened, where and when? The Southwest Monsoon (locally known as Habagat) has brought prolonged moderate to heavy rainfall across parts of Luzon and Visayas since late July 2026. Multiple weather disturbances, including successive tropical cyclones inside and outside the Philippine Area of Responsibility (PAR), have enhanced the monsoon, resulting in widespread flooding in low-lying areas, saturated ground conditions, and increased risks of rainfall-induced landslides. On 17 August 2026, intensified Habagat rainfall significantly affected Metro Manila and surrounding areas, with approximately 200 mm rainfall recorded across parts of the National Capital Region within hours. Widespread flooding affected roads, residential areas and critical infrastructure, disrupting mobility and daily activities. Although rainfall temporarily eased from 21 August, several communities in Central Luzon and Metro Manila remained inundated, leaving them vulnerable to further rainfall. On 23 August 2026, PAGASA warned of renewed monsoon rains over Ilocos Region, Central Luzon, Occidental Mindoro, and western parts of CAR and CALABARZON. By 27 August 2026, heavy rainfall had resumed, raising flood levels and exacerbating existing flooding and landslide risks. Continued rainfall has delayed the recession of floodwaters and prolonged the displacement of affected families. Prolonged flooding has also increased public health risks, including rising leptospirosis cases linked to exposure to contaminated floodwater. As of 28 August 2026, increasing cases and hospital admissions were placing additional pressure on local health facilities. Continued rainfall and inundation have also contributed to further infrastructure damage and structural failures, particularly in Central Luzon. As of 30 August 2026, heavy rainfall and flooding continued across Luzon, particularly in western areas. Tropical Depression Pilandok, which developed from a low-pressure area east of northern Luzon, is not expected to directly affect the country but may further enhance Habagat. With heavy rainfall forecast through 2 September, conditions in already affected communities may deteriorate further, increasing humanitarian needs and pressure on household coping capacity and essential services.
Philippines Cyclone and Southwest Monsoon in Luzon – DREF Operation (MDRPH060)
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