MANILA, Philippines — The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) has officially announced the weakening of the Amihan (Northeast Monsoon), signaling a transition toward significantly warmer and more humid conditions across the archipelago. Replacing the cool monsoon breeze are the Easterlies—warm winds blowing from the Pacific Ocean—which are expected to drive temperatures upward as the country enters the peak of the dry season.
According to the latest PAGASA weather bulletin, the high-pressure area over mainland Asia has begun to recede, allowing the warmer air masses to dominate the local weather pattern. While the official “summer” season declaration is pending the total disappearance of the Amihan, the current shift is already bringing “sweltering” heat indices to Metro Manila, Central Luzon, and the Cagayan Valley.
“We are seeing a definitive shift in our wind patterns,” a PAGASA forecaster stated. “The cool mornings we experienced in February are being replaced by humid conditions. We advise the public to prepare for higher temperatures, especially during the midday hours, and to stay hydrated as the heat index begins to climb.”
The transition to hotter weather brings several localized impacts:
- Rising Heat Index: Areas in Northern Luzon, including Tuguegarao and Isabela, are expected to see “extreme caution” levels on the heat index, potentially reaching 40°C to 42°C in the coming weeks.
- Isolated Rain Showers: While the Easterlies bring heat, they also carry moisture that can trigger localized thunderstorms and short-lived rain showers, particularly in the afternoon or evening over the eastern section of the country.
- Agricultural Water Demand: The shift coincides with the peak growing season for several crops, increasing the demand for irrigation. This follows recent legislative pushes for solar-powered irrigation systems to help farmers manage water more efficiently during the dry months.
- Energy Consumption Peaks: As households and businesses ramp up air conditioning to combat the humidity, the national power grid is expected to face its highest demand of the year, highlighting the importance of recent renewable energy initiatives like the Isabela Solar Park.
The weather shift comes as the country navigates a complex economic landscape. The rising temperatures are expected to impact the logistics of the “Libreng Sakay” programs and the ongoing transport strikes, as commuters face more uncomfortable conditions at outdoor pick-up points.
Health officials are also issuing advisories regarding heat-related illnesses, such as heat exhaustion and heatstroke. With several universities and colleges shifting to online classes due to transport disruptions, the Department of Health (DOH) is encouraging students and remote workers to maintain well-ventilated spaces to mitigate the effects of the humidity.
As the second quarter of 2026 approaches and the Holy Week rush begins, the hotter weather is also expected to boost “domestic tourism” to cooler destinations like Baguio or the coastal resorts of Panay and Boracay. For those staying in the lowlands, the message from PAGASA is clear: the heat is here, and it’s time to adapt to the changing Philippine climate.