The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) forecasts isolated thunderstorms for the entire Philippines today. Issued at 4:00 AM on May 15, 2026, and valid until 4:00 AM tomorrow, the forecast advises residents nationwide to be prepared for potential impacts from these weather conditions.
National Weather Outlook
Across the Philippines, including Metro Manila, expect partly cloudy to cloudy skies with isolated rainshowers or thunderstorms. PAGASA warns that severe thunderstorms could trigger flash floods or landslides in vulnerable areas. It is crucial to stay informed and take necessary safety precautions.
Regional Forecasts
Luzon
For Luzon, PAGASA predicts partly cloudy to cloudy skies with isolated rainshowers or thunderstorms. Winds are expected to be light to moderate, blowing from the Northwest to North. Coastal waters will be slight to moderate, with wave heights ranging from 0.6 to 1.5 meters. Residents in mountainous areas should be particularly vigilant for potential landslides during heavy rainfall.
Visayas
The Visayas region will also experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms. Winds will be light to moderate, coming from the Northeast to North. Similar to Luzon, coastal waters are expected to be slight to moderate, with wave heights between 0.6 and 1.5 meters. Monitor local weather updates for specific areas within the Visayas.
Mindanao
In Mindanao, PAGASA forecasts partly cloudy to cloudy skies with isolated rainshowers or thunderstorms. Winds will be light to moderate and variable in direction. Coastal waters are expected to be slight to moderate, with wave heights ranging from 0.6 to 1.5 meters. Residents are advised to stay updated with the latest weather information and take precautions against possible flash floods.
Temperature and Humidity
Yesterday, the maximum temperature recorded at the PAGASA Weather Station in Science Garden, Diliman Quezon City, was 35.1°C at 1:00 PM. The minimum temperature was 27.4°C at 6:30 AM. The relative humidity ranged from a maximum of 79% at 5:00 AM to a minimum of 46% at 1:00 PM.
Wind and Coastal Water Conditions
Across the Philippines, winds are expected to be generally light to moderate. In Luzon, winds will blow from the Northwest to North. In the Visayas, the winds will come from the Northeast to North, while in Mindanao, winds will be variable. Coastal waters will be slight to moderate nationwide, with wave heights between 0.6 and 1.5 meters.
Tidal Information for Manila Bay
PAGASA, courtesy of NAMRIA, provides the following tidal predictions for Manila Bay:
- Today: Low tide at 1:45 AM (0.32m), High tide at 8:36 AM (0.94m), Low tide at 3:46 PM (0.03m), High tide at 10:12 PM (0.52m)
Sunrise and Sunset
Today's sunrise was at 5:28 AM, and sunset will be at 6:17 PM. The moonrise was at 3:42 AM, and moonset will be at 4:41 PM. The moon's illumination is at 3%.
Safety Measures During Thunderstorms
PAGASA advises the public to take the following safety precautions during thunderstorms:
- Stay indoors: Seek shelter in a sturdy building.
- Avoid electrical appliances: Unplug appliances to prevent damage from lightning strikes.
- Stay away from windows and metal objects: These can conduct electricity.
- Be aware of flash floods: If you live in a flood-prone area, be prepared to evacuate.
- Monitor PAGASA updates: Stay informed about the latest weather conditions.
Tracking the Low Pressure Area
As of 3:00 AM today, the Low Pressure Area (formerly "CALOY") was estimated to be 1,055 km East of Southeastern Luzon (14.9°N, 131.5°E). PAGASA continues to monitor its development.
Monitor official PAGASA updates at pagasa.dost.gov.ph