MANILA, Philippines — Expect a sweltering Sunday across the archipelago as a ridge of a high-pressure area (HPA) continues to dictate weather conditions, bringing hot and humid air to most parts of the country.
According to the 5:00 AM forecast from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) on April 12, 2026, the HPA is currently extending over Northern Luzon, effectively suppressing the formation of rain clouds.
Pagasa has issued a stern warning regarding the heat index—the temperature as perceived by the human body—which is expected to hit “danger levels” in several regions.
- Eastern Samar: A peak heat index of 43°C is forecast for Guiuan.
- Metro Manila: Heat levels are expected to range between 38°C and 40°C.
- Danger Zone: Pagasa classifies heat indices between 42°C and 51°C as a “danger level,” where heat cramps and exhaustion are likely, and heatstroke becomes a serious risk with prolonged exposure.
Pagasa weather specialist Veronica Torres noted that the presence of the HPA ridge significantly lowers the chances of thunderstorm development.
- General Conditions: Partly cloudy to cloudy skies will prevail nationwide.
- Localized Rain: While the weather is generally dry, isolated rain showers or thunderstorms may still occur, primarily in the late afternoon or evening, due to localized convection.
- Sea Conditions: Coastal waters remain generally slight to moderate, favorable for maritime activities, though the heat remains the primary concern for outdoor workers and travelers.
As the country grapples with the peak of the dry season, health authorities are reiterating key safety protocols to prevent heat-related illnesses:
- Hydrate Regularly: Drink plenty of water even if you do not feel thirsty. Avoid caffeine and alcohol, which can cause dehydration.
- Limit Exposure: Stay indoors during the hottest part of the day, typically between 10:00 AM and 4:00 PM.
- Wear Appropriate Clothing: Opt for lightweight, light-colored, and loose-fitting clothes that allow the skin to breathe.
- Monitor Vulnerable Groups: Check on the elderly, young children, and those with pre-existing health conditions, as they are more susceptible to the effects of extreme heat.
The current weather pattern is expected to persist for the next few days as the ridge of high pressure maintains its influence over the Philippine landmass.