The Philippines can expect possible thunderstorms nationwide, according to the 4:00 AM PAGASA weather forecast issued today, April 18, 2026. The forecast is valid until 4:00 AM tomorrow.
PAGASA reports that a ridge of high pressure area (HPA) is extending over Northern Luzon. While a typhoon, SINLAKU (2604), is present, it is located 2,570 KM east of Extreme Northern Luzon (21.4N, 146.5°E) and is not expected to directly affect the country's weather. The typhoon has maximum sustained winds of 120 km/h near the center and gustiness up to 150 km/h, and is moving north-northeastward at 15 km/h.
Regional Forecasts
Luzon
Residents in Luzon should prepare for possible thunderstorms. These thunderstorms could bring lightning, heavy rains, and strong winds. Specifically, the eastern sections of Northern and Central Luzon will experience moderate winds from the east to southeast. Coastal waters will be moderate, with wave heights of 1.5 to 2.5 meters. The rest of Luzon will experience light to moderate winds from the northeast, with slight to moderate seas.
Visayas
The Visayas region is also under a forecast of possible thunderstorms. Pay close attention to local weather updates and be prepared for potential heavy rainfall and gusty winds. While no specific wind or sea conditions are mentioned for the Visayas, the overall national forecast indicates light to moderate winds across the islands, so be aware of local conditions.
Mindanao
Mindanao, similar to Luzon and Visayas, has a forecast of possible thunderstorms. Take precautions and stay informed on the latest weather updates from PAGASA. The general forecast indicates light to moderate winds from varying directions across the islands, with slight to moderate seas, so be aware of local conditions.
Temperature and Humidity
Yesterday's (April 17, 2026) recorded temperatures at the PAGASA Weather Station in Science Garden, Diliman, Quezon City, showed a maximum temperature of 34.3°C at 2:00 PM and a minimum temperature of 23.4°C at 5:30 AM. The relative humidity reached a maximum of 80% at 5:00 AM and a minimum of 38% at 2:00 PM.
Wind and Coastal Waters
Across the Philippines, expect generally light to moderate winds.
- Eastern sections of Northern and Central Luzon: Moderate winds from the east to southeast; moderate seas.
- Rest of Luzon: Light to moderate winds from the northeast; slight to moderate seas.
- Rest of the country: Light to moderate winds from varying directions; slight to moderate seas.
Safety Tips During Thunderstorms
During thunderstorms, remember these safety tips:
- Seek shelter indoors. A sturdy building is the safest place to be.
- Avoid open fields and isolated high objects like trees.
- If you are caught outdoors, crouch low to the ground in a lightning-safe position.
- Stay away from bodies of water.
- Unplug electronic devices to protect them from lightning strikes.
- Postpone outdoor activities until the storm has passed.
Tides and Astronomical Information (Metro Manila)
Today:
- Low Tide: 5:48 AM (0.32 meters)
- High Tide: 11:05 AM (0.97 meters)
- Low Tide: 5:20 PM (0.18 meters)
- Sunrise: 5:51 AM
- Sunset: 6:10 PM
- Moonrise: 6:34 PM
- Moonset: 7:52 AM
- New Moon: 5
Stay Informed
Monitor official PAGASA updates at pagasa.dost.gov.ph