The northeast monsoon continues to dominate weather patterns across Northern and Central Luzon today, bringing cloudy conditions and light rainfall to millions of Filipinos, while the rest of the country enjoys generally fair weather conditions, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) reported in its latest 24-hour public weather forecast.
The weather bureau issued the nationwide forecast at 4:00 AM on March 18, 2026, valid until 4:00 AM tomorrow, providing detailed regional outlooks for all major island groups across the Philippines.
Northeast Monsoon Affects Northern Luzon
The northeast monsoon, locally known as "amihan," is currently the dominant weather system affecting the northern and central portions of Luzon, according to PAGASA meteorologists. This seasonal wind pattern typically brings cooler, drier conditions but can produce light to moderate rainfall in affected areas.
Batanes, Cagayan, and Isabela provinces are experiencing the most direct impact from the northeast monsoon, with residents waking up to cloudy skies accompanied by light rains throughout the day. PAGASA emphasizes that these conditions pose no significant impact to daily activities or public safety.
"The northeast monsoon affecting Northern and Central Luzon will continue to bring generally manageable weather conditions," the forecast indicates, providing reassurance to residents in these regions planning outdoor activities or travel.
Metro Manila and Central Luzon Outlook
Metro Manila, along with the Cordillera Administrative Region and the rest of Central Luzon, can expect partly cloudy to cloudy skies with isolated light rains due to the same northeast monsoon system. The capital region's 13 million residents should prepare for intermittent cloud cover but can expect minimal rainfall disruption to daily routines.
The partly cloudy conditions offer a welcome respite from intense heat, with comfortable temperatures expected throughout the day. Commuters and outdoor workers in Metro Manila and surrounding provinces can anticipate pleasant weather conditions with only brief, light rain showers possible.
Fair Weather Dominates Visayas and Mindanao
The rest of the Philippines, encompassing the entire Visayas region and Mindanao, will experience predominantly fair weather conditions characterized by partly cloudy to cloudy skies. These areas remain outside the direct influence of the northeast monsoon, allowing for more typical tropical weather patterns.
However, PAGASA cautions residents across Visayas and Mindanao to remain alert for isolated rain showers or thunderstorms caused by localized thunderstorm activity. While these weather disturbances are typically brief and scattered, they can produce intense rainfall over small areas.
The weather bureau specifically warns that "possible flash floods or landslides may occur during severe thunderstorms" in areas experiencing these isolated weather disturbances. Residents in mountainous regions and flood-prone areas should monitor local conditions and take appropriate precautions when thunderstorms develop.
Wind and Coastal Water Conditions
Maritime activities and coastal communities should pay close attention to wind and sea conditions, which vary significantly across different regions of the archipelago. PAGASA reports that the northern and eastern sections of Luzon, along with the eastern section of Visayas, will experience moderate to strong winds from the northeast to east direction.
These wind conditions will generate moderate to rough coastal waters with wave heights ranging from 2.1 to 3.4 meters, potentially affecting small fishing boats and recreational watercraft. Mariners in these areas should exercise increased caution and consider postponing non-essential sea travel.
The eastern section of Mindanao will face similar conditions with moderate to strong northeast to east winds producing moderate to rough seas. Local fishing communities and boat operators should monitor marine weather bulletins closely.
Meanwhile, the rest of the country will enjoy more favorable maritime conditions with light to moderate winds from the northeast to east direction, creating slight to moderate sea conditions ideal for most water-based activities.
Temperature and Humidity Outlook
Temperature readings from PAGASA's weather station at Science Garden in Diliman, Quezon City, provide insight into current atmospheric conditions. Yesterday's maximum temperature reached 28.1°C at 2:00 PM, while the minimum dropped to 20.7°C at 2:00 AM, indicating comfortable temperature ranges for this time of year.
Relative humidity levels peaked at 85% during the early morning hours at 2:00 AM and dropped to a minimum of 61% at 1:00 AM, reflecting typical tropical humidity patterns that residents can expect to continue.
Safety Recommendations and Preparedness
While current weather conditions across most of the Philippines remain generally favorable, PAGASA advises the public to maintain awareness of rapidly changing weather patterns, particularly in areas prone to localized thunderstorms.
Residents in Northern and Central Luzon experiencing northeast monsoon effects should keep umbrellas handy for light rain showers but can proceed with normal daily activities. Those in other regions should remain vigilant for sudden thunderstorm development and seek appropriate shelter when necessary.
Coastal communities and maritime operators should strictly observe wind and sea condition warnings, particularly in northern and eastern coastal areas where moderate to rough seas are forecast.
For the most current and detailed weather information, including any updates or changes to current forecasts, the public should monitor official PAGASA updates at pagasa.dost.gov.ph.