QUEZON CITY, June 13, 2026 — Residents across the eastern flanks of the Philippines face a heightened risk of flash floods and landslides on Saturday as the easterlies drive scattered rains and thunderstorms into several key regions, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). The state weather bureau issued its 24-hour public weather forecast at 4:00 AM on June 13, 2026, valid until 4:00 AM on June 14.
While much of the country will see only isolated rain showers or thunderstorms, specific areas — particularly in Mindanao, the Bicol peninsula, Eastern Visayas, and the Caraga region — are under a more significant weather threat, with moderate to at times heavy rainfall making flash floods and landslides a real concern for communities in low-lying and mountainous terrain.
National Weather Overview
PAGASA identified the easterlies — winds blowing in from the east — as the dominant weather system influencing the country on this date. These winds are directly affecting the eastern sections of Southern Luzon, Visayas, and Mindanao, funneling moisture into those areas and generating the rainfall activity expected for the day.
Elsewhere, localized thunderstorm development — a common occurrence during this time of year — will be responsible for isolated rain showers and thunderstorms in Metro Manila and most other parts of the country not directly in the path of the easterlies.
Luzon Forecast
Bicol Region
Residents of the Bicol Region should prepare for cloudy skies with scattered rains and thunderstorms throughout the forecast period. PAGASA warns that the combination of moderate to at times heavy rainfall creates conditions favorable for flash floods and landslides. People living near rivers, coastal areas, and mountainous terrain in provinces such as Albay, Camarines Sur, Camarines Norte, Sorsogon, Catanduanes, and Masbate are advised to remain on alert and avoid areas known to be prone to flooding or soil movement.
Extreme Northern Luzon
The northernmost parts of Luzon — including areas in the Ilocos Region, Cagayan Valley, and the Cordillera Administrative Region bordering the northern tip of the archipelago — will experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, driven by the same easterlies system. While conditions are less intense than in Bicol or Mindanao, PAGASA notes that flash floods and landslides remain possible during severe thunderstorm episodes. Residents in highland communities and those near river systems should monitor rainfall closely.
Metro Manila and the Rest of Luzon
The nation's capital and surrounding areas will see partly cloudy to cloudy skies with isolated rainshowers or thunderstorms attributed to localized thunderstorm activity. Although the probability of rain is lower than in the eastern regions, PAGASA still cautions that flash floods and landslides are possible during severe thunderstorms. Urban flooding, a recurring concern in Metro Manila, remains a risk during concentrated downpours, particularly in low-lying communities and areas with poor drainage.
Visayas Forecast
Eastern Visayas
Eastern Visayas — which includes Leyte, Southern Leyte, Samar, Eastern Samar, Northern Samar, and Biliran — is among the areas most directly affected by the easterlies on Saturday. PAGASA forecasts cloudy skies with scattered rains and thunderstorms for the region, with the threat of flash floods and landslides due to moderate to at times heavy rainfall. Residents in the region, which has historically experienced significant rainfall-related hazards, should exercise caution and heed any local government advisories.
Western Sections of Visayas
The western parts of the Visayas — including areas on the western coasts of the island group — will experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, linked to the easterlies. Flash floods and landslides are possible during severe thunderstorm events, according to PAGASA's forecast.
Mindanao Forecast
Davao Region
The Davao Region faces the most significant weather conditions in Mindanao on Saturday, with PAGASA forecasting cloudy skies with scattered rains and thunderstorms. The risk of flash floods and landslides from moderate to at times heavy rains is explicitly flagged by the weather bureau. Communities in upland areas and along major river basins in the region — including Davao City, Davao del Norte, Davao del Sur, Davao Oriental, Davao Occidental, and Davao de Oro — should be on heightened alert.
Caraga Region
The Caraga region in northeastern Mindanao is similarly affected, with cloudy skies and scattered rains and thunderstorms expected. Like the Davao Region, Caraga faces the risk of flash floods and landslides due to moderate to at times heavy rainfall. Provinces in Caraga — Agusan del Norte, Agusan del Sur, Surigao del Norte, Surigao del Sur, and Dinagat Islands — are urged to stay alert, particularly those in flood-prone valleys and steep terrain.
Western Mindanao and Palawan
The western sections of Mindanao, along with Palawan, will see partly cloudy to cloudy skies with isolated rainshowers or thunderstorms associated with the easterlies. PAGASA notes that flash floods and landslides are possible during severe thunderstorm episodes in these areas as well.
Temperature and Humidity
For reference, PAGASA's weather station at Science Garden in Diliman, Quezon City recorded a maximum temperature of 32.9°C at 11:00 AM and a minimum of 26.0°C at 5:00 AM during the 24-hour period ending at 8:00 PM yesterday, June 12. Relative humidity ranged from a high of 94 percent to a low of 62 percent over the same period, reflecting the muggy conditions typical of the Philippine wet season.
Wind and Coastal Water Conditions
Winds across the country are expected to be light to moderate on Saturday. In Extreme Northern Luzon, winds will blow from the south to southwest. Over Palawan and the western sections of Visayas and Mindanao, winds will come from the southwest to south. The rest of the country will experience winds from the southeast to south.
Coastal waters remain generally manageable, with slight to moderate wave heights forecast nationwide. Extreme Northern Luzon's coastal waters may see waves of 0.6 to 1.5 meters, while Palawan, western Visayas, western Mindanao, and the rest of the country can expect wave heights of 0.6 to 1.2 meters. Fisherfolk and small watercraft operators should exercise standard caution given these sea conditions.
Astronomical and Tidal Information for Metro Manila
For Metro Manila on June 13, 2026, the sun will rise at 5:27 AM and set at 6:26 PM. The moon will rise at 3:07 AM and set at 4:30 PM, with lunar illumination at just 4 percent — indicating a near-new moon phase. Manila Bay tidal predictions, courtesy of NAMRIA, show a high tide of 1.2 meters at 7:43 AM and a low tide of -0.05 meters at 4:01 PM.
Safety Reminders
PAGASA urges residents in areas under threat of scattered rains and thunderstorms — particularly those in flood-prone and landslide-prone zones in the Davao Region, Bicol Region, Eastern Visayas, and Caraga — to remain vigilant throughout the day. Avoid crossing swollen rivers or flooded roads, and stay clear of steep slopes during periods of heavy rainfall. Those in coastal communities should also take note of current sea conditions before venturing out on the water.
Local government units and disaster risk reduction offices in affected areas are encouraged to coordinate preparedness measures and disseminate timely warnings to their communities.
The public is advised to monitor official PAGASA updates at pagasa.dost.gov.ph for the latest forecasts, warnings, and advisories as conditions may change throughout the day.