Rainy Season in Manila: What to Know in 2026

By August 19, 2026, the rains had gotten disruptive enough to postpone a scheduled Senate impeachment trial session, a small but telling sign of how much rainy season in Manila can disrupt daily life. PAGASA declared the official start of the 2026 southwest monsoon on May 30, warning that 9 to 13 tropical cyclones were likely to form or enter the country's area of responsibility from June through November. PAGASA's own climate models also flagged a developing El Niño with a growing chance of reaching "very strong" status by late 2026, and PAGASA noted that pattern was expected to enhance the habagat from June through September rather than dry things out early, driving heavier-than-usual rainfall over western Luzon and the Visayas.

On August 10, PAGASA forecast more than 200 millimeters of rain over Benguet in a single day, keeping an already-saturated Metro Manila under continued threat of flooding and landslides. If you live, work, or commute anywhere in Metro Manila, here's what you need to know before the next downpour hits.

10 Ways to Stay Safe This Rainy Season in Manila

1. Know What the Rainfall Warning Colors Mean
2. Check the Weather Forecast Before You Leave the House
3. Avoid Wading Through Floodwater
4. Get Rid of Stagnant Water to Prevent Dengue
5. Prepare an Emergency Bag Before the Rains Come
6. Never Drive Through a Flooded Road
7. Keep Your Phone, Documents, and Cash Dry
8. Clean Your Drains Before Rainy Season Starts
9. Learn the Warning Signs of Rainy Season Illnesses
10. Follow Real-Time Weather Alerts, Not Just the Morning News

1. Know What the Rainfall Warning Colors Mean

PAGASA's rainfall warnings are measured thresholds: a yellow warning means 7.5 to 15 millimeters of rain within an hour, with slight flooding possible in low-lying areas, orange means 15 to 30 millimeters an hour, the point where officials advise the public to stay alert and ready to act on guidance from local disaster units, and red means more than 30 millimeters in an hour, or rain that has kept falling for three hours and already passed 65 millimeters, the level at which severe flooding is expected and evacuation is the assumption, not the option. Keep in mind that these warnings cover a whole province, not your specific street, so two houses nearby can flood very differently depending on elevation and proximity to a creek or canal.

Your takeaway: treat yellow as your cue to plan, orange as your cue to act, and red as confirmation you should already be somewhere safe.

2. Check the Weather Forecast Before You Leave the House

Checking PAGASA's live advisories takes less time than deciding what to wear: the agency's regional forecast pages can name individual barangays and towns expected to get hit by thunderstorms within the next two hours, alongside risks like flash floods and landslides, and PAGASA's main site keeps a running feed of the week's dominant weather systems. If you're in Metro Manila, bookmark the NCR regional forecast page since it updates multiple times a day and gets far more specific than the evening news.

Your takeaway: make checking PAGASA part of your morning routine, the same way you'd check traffic.

3. Avoid Wading Through Floodwater

Leptospirosis is the disease most closely tied to floodwater exposure, and this rainy season has strained hospitals directly: DOH had recorded 4,285 leptospirosis cases nationwide as of August 22, actually 37% lower than the 6,839 cases logged over the same period in 2025, though case counts ticked up again in late July and into August as the enhanced habagat continued, and the surge was severe enough that the National Kidney and Transplant Institute reached full bed capacity by August 23, limiting walk-in admissions and referring patients to other hospitals. The bacteria spreads through the urine of infected animals, and symptoms, including fever, chills, severe headache, and muscle pain, usually appear one to two weeks after exposure; doxycycline is available at health centers based on a clinician's assessment, but DOH warns against self-medicating with antibiotics.

Your takeaway: if wading through floodwater is unavoidable, wear boots, cover open cuts, and see a doctor if fever or body pain shows up within the next month.

4. Get Rid of Stagnant Water to Prevent Dengue

Here's an encouraging number, with a caveat: DOH recorded 93,155 dengue cases nationwide from January 4 to August 1, 2026, a 46% decrease from the 174,077 cases logged over the same period in 2025, with deaths down to 386 from 699. The National Capital Region alone still accounted for 10,611 of those cases, and several local government units, including Mandaluyong City, had already breached the epidemic threshold by early August, so a national decline doesn't mean every neighborhood is in the clear. The prevention checklist hasn't changed: search and destroy standing water around your home, use repellent, and watch for high fever, rashes, or body aches. If symptoms appear, the World Health Organization advises managing pain and fever with paracetamol, and explicitly avoiding ibuprofen and aspirin, since both increase the risk of bleeding.

Your takeaway: a container of stagnant water sitting out for a week is basically a mosquito nursery, dump it before the next rain fills it again.

5. Prepare an Emergency Bag Before the Rains Come

Pack a small waterproof bag with a flashlight, a power bank, a basic first-aid kit, copies of your IDs sealed in plastic, and cash in small bills, since ATMs and card terminals are often among the first things to go down during an outage. Quezon City's own disaster risk reduction office recommends regularly updating the bag and checking expiration dates on food and medications inside it, not just packing it once and forgetting about it.

Your takeaway: build the bag in June, not while you're already ankle-deep in floodwater in August.

6. Never Drive Through a Flooded Road

Engine stall in floodwater is one of the most common, and most preventable, ways vehicles get written off, and assuming a familiar road will behave the same way it always has is riskier than usual this year: a nationwide audit into flood control projects found missing structures, relocated work, and payments for flood controls that already existed, scrutiny significant enough that the World Bank cited it in cutting its 2026 Philippine growth forecast from 5.3% to 3.7%. If you can't see the road markings under the water, don't drive through it: the MMDA's own flood gauge classifies water at 8 to 10 inches, roughly gutter to half-knee level, as still passable to all vehicles, but once it reaches 13 to 19 inches, or knee to half-tire level, the road is no longer passable to light vehicles, and by the time you can eyeball that difference, it's often too late.

Your takeaway: a flooded road that looked fine last rainy season isn't a guarantee this one will behave the same way.

7. Keep Your Phone, Documents, and Cash Dry

Use a waterproof pouch for your phone and wallet whenever you're commuting through active habagat weather, and keep copies of critical documents like IDs and insurance papers somewhere dry, in addition to digital backups. If you work from home, this is also the season for backup power for your router, since a blackout usually knocks out broadband before it knocks out mobile data.

Your takeaway: if it can't survive a dunk in a puddle, it shouldn't be in your pocket during a downpour.

8. Clean Your Drains Before Rainy Season Starts

MMDA officials have identified garbage-clogged waterways as the leading cause of flooding in Metro Manila, which is exactly why clearing your own gutters and canal frontage matters more than it looks like it should. Clear leaves, trash, and debris from gutters, downspouts, and any drainage canals near your property before the rains fully set in, ideally before June. If you live in a low-lying area with a history of flooding, elevate appliances off the floor and know your evacuation route before you need it.

Your takeaway: preventive maintenance in May saves you from bailing water out of your living room in August.

9. Learn the Warning Signs of Rainy Season Illnesses

Health authorities use a blunt acronym for the illness categories that spike every rainy season: Water-borne diseases, Influenza-like illness, Leptospirosis, and Dengue, or WILD for short. Water-borne illnesses spread through drinking water contaminated during flooding, so boil it when in doubt, while leptospirosis and dengue are covered above. The common thread: symptoms that seem mild for a day or two, like fever or body pain, shouldn't be ignored, and anything that worsens after two to three days is a reason to see a doctor.

Your takeaway: a fever that would normally pass on its own is worth a same-day check-up during rainy season.

10. Follow Real-Time Weather Alerts, Not Just the Morning News

Habagat conditions can shift within hours, so follow PAGASA, NDRRMC, and your city or barangay's official channels directly, rather than relying on secondhand screenshots making the rounds in group chats. This matters just as much if you manage a brand's social channels or handle PR for an organization operating in Metro Manila, since a flood-related disruption can spike public conversation within a single day, and by the time it shows up in a weekly report, the moment to respond has usually passed.

Your takeaway: real-time information matters just as much when you're deciding if it's safe to leave the house as it does when your brand has to decide how to respond.

What You Do This Rainy Season Matters

Habagat is not new to Manila, but 2026 has been a reminder that "normal" rainy season and "manageable" rainy season aren't always the same thing. Most of the risk is still manageable with habits you can build before the next downpour: know your warning colors, keep your bag packed, avoid the floodwater, and stay plugged into real information instead of rumors. Rainy season in Manila isn't going away. How ready you are for it is still up to you.

Stay Informed This Rainy Season and Every Season

Knowing what's happening in your city, and what's being said about it, is the first step to staying ahead of it. A flood advisory, a public health warning, a story that affects your brand: the conversations that matter are already happening across Philippine media in real time.

With Media Meter's real-time media monitoring, you'll always know what's being said, when it's being said, and where it matters most. Explore how Media Meter can help you and your brand stay ahead of every conversation, from breaking weather emergencies to long-term reputation management.