The Philippines is bracing for widespread rainfall this Sunday as the Southwest Monsoon, locally known as "Habagat," and Typhoon Domeng bring unsettled weather conditions across the archipelago. PAGASA, the national weather agency, issued its 24-hour public weather forecast at 4:00 AM today, May 31, 2026, outlining the expected weather patterns until 4:00 AM tomorrow.
National Weather Overview
Across the country, varying weather conditions are expected. The Southwest Monsoon is significantly impacting Southern Luzon, Visayas, and Mindanao, leading to increased rainfall and potential hazards. Further north, the trough of Typhoon Domeng is causing similar conditions in specific areas of Luzon. Meanwhile, other regions should prepare for localized thunderstorms, particularly during the afternoon and evening hours.
Regional Forecasts
Luzon
Metro Manila, CALABARZON (Cavite, Laguna, Batangas, Rizal, Quezon), and the Bicol Region will experience cloudy skies with scattered rains and thunderstorms due to the Southwest Monsoon. Residents should be vigilant for possible flash floods or landslides due to moderate to heavy rains. Central Luzon, Cagayan, and Isabela will also have cloudy skies with scattered rains and thunderstorms, influenced by the trough of Typhoon Domeng. Northern Luzon will experience moderate to strong winds.
Visayas
Western Visayas and the Negros Island Region will experience cloudy skies with scattered rains and thunderstorms due to the Southwest Monsoon. There is a risk of flash floods and landslides in vulnerable areas. Coastal waters are expected to be slight to moderate, with wave heights ranging from 0.6 to 2.5 meters.
Mindanao
The Zamboanga Peninsula and BARMM (Bangsamoro Autonomous Region in Muslim Mindanao) will also be affected by the Southwest Monsoon, resulting in cloudy skies with scattered rains and thunderstorms. Residents are advised to take precautions against potential flash floods and landslides. The rest of Mindanao will experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, primarily in the afternoon or evening.
Typhoon Domeng Update
As of 3:00 AM today, the eye of Typhoon Domeng (international name: Jangmi) was located approximately 670 kilometers east of Basco, Batanes (20.2°N 128.4°E). The typhoon has maximum sustained winds of 120 km/h near the center and gustiness of up to 150 km/h. It is moving North Northwestward at 20 km/h. While Domeng is not expected to directly hit the Philippines, its trough is contributing to rainfall in parts of Northern Luzon.
Wind and Coastal Water Conditions
In Northern Luzon, winds will be moderate to strong, coming from the Northeast to Northwest. This will result in moderate to rough coastal waters, with wave heights between 1.2 to 3.4 meters. Central Luzon will have light to moderate winds from the Northwest to West, with slight to moderate coastal waters (0.6 to 2.5 meters). The rest of the country will experience light to moderate winds from the Southwest, with slight to moderate coastal waters.
Temperature and Humidity
Yesterday, the maximum temperature recorded at the PAGASA Weather Station in Quezon City was 33.7°C at 2:00 PM, while the minimum temperature was 28.8°C at 5:30 AM. The relative humidity ranged from 61% to 81%.
Safety Precautions
PAGASA advises the public to take the following precautions:
- Stay informed about the latest weather updates from PAGASA.
- Avoid low-lying areas and riverbanks during heavy rainfall to prevent flash floods.
- Be alert for signs of landslides, such as cracks in the ground or leaning trees.
- If a thunderstorm is approaching, seek shelter indoors.
- Monitor water levels and be prepared to evacuate if necessary.
- Fishermen and those with small seacraft are advised to avoid venturing out to sea, especially in areas with moderate to rough coastal waters.
PAGASA Monitoring
PAGASA continues to monitor Typhoon Domeng and the Southwest Monsoon closely. The agency will provide updated forecasts as necessary. The public is urged to stay vigilant and take all necessary precautions to ensure their safety.
Monitor official PAGASA updates at pagasa.dost.gov.ph