MANILA, September 3, 2026 — Millions of Filipinos across Luzon and Visayas woke up to overcast skies and rain on Wednesday, September 3, as the southwest monsoon continued to push moisture across the western half of the country. While Tropical Storm Pilandok (international name: Krovanh) remains far outside Philippine territory, its indirect influence — combined with the prevailing monsoon — is enough to keep conditions wet and unsettled for a significant portion of the nation today, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
What Is Driving Today's Weather
The primary driver of today's conditions is the southwest monsoon, known locally as "habagat." This is the seasonal wind flow that arrives from the southwest and carries warm, moisture-laden air from the sea onto land — typically bringing persistent, heavy rainfall to the western side of the Philippines from June through September. When a tropical cyclone is present nearby, it can enhance the monsoon's strength by pulling in additional moisture, intensifying rainfall well beyond the storm's immediate path.
Separately, Tropical Storm Pilandok was located approximately 1,030 km east-northeast of Extreme Northern Luzon (coordinates: 24.8°N, 130.9°E) as of 3:00 AM today. PAGASA reports it had maximum sustained winds of 75 km/h near the center, with gusts of up to 90 km/h, and was moving northwestward at 20 km/h. The storm is outside the Philippine Area of Responsibility (PAR) as of the 5:00 AM update, and no storm signals are currently in effect anywhere in the country. Nonetheless, its presence in the broader region continues to strengthen the southwest monsoon's impact across western Luzon and Visayas.
Region-by-Region Forecast: What to Expect Today
Northern and Western Luzon
Residents of the Ilocos Region, Abra, Benguet, Zambales, and Bataan face the wettest conditions in the country today. PAGASA forecasts cloudy skies with moderate to heavy rain for these areas, driven by the southwest monsoon. People in low-lying areas and communities near rivers and slopes should remain alert to the possibility of flooding and landslides if rainfall persists or intensifies throughout the day.
Metro Manila and Central Luzon
The National Capital Region and its neighboring provinces — including Cavite, Laguna, and Oriental Mindoro — can expect cloudy skies with light to moderate rain and possible thunderstorms. Commuters should prepare for wet roads and reduced visibility during rain bursts. Flooding in low-lying streets and heavy traffic are real possibilities, particularly during the morning and afternoon rush hours.
The rest of Central Luzon, along with other parts of Luzon not mentioned above, should see partly cloudy skies with isolated rain showers or thunderstorms. Dry spells are possible between rain events.
Visayas
The Visayas region will experience partly cloudy skies with isolated rain showers or thunderstorms for most of the day. While conditions are less intense than those in western Luzon, residents should still keep an umbrella handy, as localized downpours can develop quickly, especially in the afternoon.
Mindanao
Mindanao will have partly cloudy to cloudy skies with isolated rain showers or thunderstorms, driven by localized weather systems. No widespread severe weather is expected, but afternoon thunderstorms remain possible in many areas. Residents are advised to stay aware of changing local conditions.
Decoding the Warnings: What Each Advisory Means
As of PAGASA's 4:00 AM bulletin on September 3, 2026, no Tropical Cyclone Wind Signals are in effect anywhere in the Philippines. Tropical Storm Pilandok is outside PAR and poses no direct wind threat to any part of the country at this time.
However, PAGASA has flagged rough sea conditions over specific bodies of water — a practical warning that is just as important for many Filipinos as any storm signal. If you live in a coastal community or plan to travel by sea, understanding what these advisories mean is critical. For a full guide on all of PAGASA's warning systems, read how to read PAGASA's weather warnings — it covers rainfall color codes, tropical cyclone wind signals, and heat index categories in plain language.
Sea and Coastal Conditions
PAGASA's sea condition forecast for today paints a sharp contrast between the western and eastern seaboards:
- Luzon and Visayas (western seaboard): Winds are described as northerly to northwesterly, strong, producing rough seas with wave heights that make conditions hazardous for small watercraft.
- Mindanao waters: Winds are southwest, light to moderate, with wave heights of 0.6 to 2.1 meters — described as slight to moderate. Conditions are more manageable but still require caution.
PAGASA strongly advises all fisherfolk, small-boat operators, and seafarers to take sea condition advisories seriously before heading out. Rough seas along the western seaboards of Luzon and Visayas are dangerous for small vessels and may result in capsizing.
What Today's Weather Means for You
Commuters
If you travel through Metro Manila, Central Luzon, or western Luzon, expect wet roads and the likelihood of traffic slowdowns caused by rain-related flooding in low-lying areas. Leave earlier than usual and keep a rain jacket or umbrella within reach. Allow extra travel time particularly in the morning and late afternoon.
Fisherfolk and Small-Boat Operators
Do not venture into the western waters off Luzon and Visayas today. PAGASA's rough sea advisory for these areas means conditions are unsafe for small fishing boats and bancas. Those in Mindanao waters face lighter conditions, but wave heights of up to 2.1 meters still demand caution and proper safety gear.
Farmers
Farmers in Ilocos, Benguet, and Zambales should take precautions ahead of moderate to heavy rainfall, which could cause soil erosion and crop damage in low-lying or sloped farmlands. Those in Metro Manila and Central Luzon should monitor drainage around their fields, as light to moderate rain with possible thunderstorms could lead to localized waterlogging.
Students, Parents, and Schools
No class suspensions have been announced by PAGASA — those decisions rest with local government officials. However, parents in areas forecasted to receive moderate to heavy rain — particularly the Ilocos Region, Abra, Benguet, Zambales, Bataan, Metro Manila, Cavite, and Laguna — should stay tuned to their local government units for any advisories before sending children to school. Pack rain gear and prepare for delays.
Outdoor Workers
Construction workers, delivery riders, and others who work outdoors in western Luzon and Metro Manila face a challenging day. Moderate to heavy rain can reduce visibility, make surfaces slippery, and increase the risk of accidents. Supervisors are encouraged to assess site safety and consider adjusting work schedules around the heaviest rain periods, typically mid-morning through the afternoon.
Temperature Outlook
PAGASA recorded the following temperature and humidity data for the 24-hour period ending 4:00 PM yesterday at the Science Garden station in Quezon City:
Maximum Temperature: 31.3°C (recorded at 12:00 noon) | Minimum Temperature: 28.1°C (recorded at 8:00 AM)
Maximum Relative Humidity: 100% | Minimum Relative Humidity: 67% (recorded at 3:00 PM)
The combination of temperatures in the low-to-mid 30s and high humidity levels means the heat index — or "feels-like" temperature — may be notably higher than the thermometer reading during any dry spells in the afternoon. Residents in areas not receiving significant rainfall should stay hydrated and avoid prolonged exposure to direct sunlight during peak afternoon hours.
Astronomical Information for September 3
For planning purposes, PAGASA notes that sunrise is at 5:47 AM and sunset is at 6:07 PM today, giving approximately 12 hours and 20 minutes of daylight. The moon is at 30% illumination, providing limited natural light after dark — a relevant consideration for anyone traveling in poorly lit areas during the evening rain.
Bottom Line
The southwest monsoon is the main story today, September 3, 2026. Western Luzon — from Ilocos down to Bataan — will bear the brunt of moderate to heavy rainfall, while Metro Manila and surrounding provinces can expect persistent light to moderate rain with thunderstorms. Visayas and Mindanao will see mostly isolated showers. Tropical Storm Pilandok is outside PAR and poses no direct threat at this time, but the monsoon it is enhancing is real and already affecting millions. If you live in or will travel through western Luzon or Metro Manila today, prepare for a wet day, avoid swollen waterways, and stay off rough western seas.
Monitor official PAGASA updates at pagasa.dost.gov.ph.