Philippine Rainy-Season Downpours and Manila Flooding — Causes, Timing, and a Typhoon-Name Tip

Philippine Rainy-Season Downpours and Manila Flooding — Causes, Timing, and a Typhoon-Name Tip

In one line
A host with 14 years in the Philippines explains the heavy rains of summer 2025, why Manila floods whenever it rains, when the rainy and dry seasons are, and how Philippine typhoon names work.

💡 Key takeaways

[Summer 2025]
• In July 2025, two typhoons brought heavy rain to Manila and the north, flooding roads, displacing residents and killing dozens (per the host).
• Manila saw almost no sun for about two weeks of continuous rain.
• The host's friends visiting during bad weather often spent their trips indoors with massages and hotel stays.

[Typhoons that don't make landfall still matter]
• A study of 62 years of data (1961–2022) found that typhoons strengthening the southwest monsoon (habagat) from offshore caused more than twice as much rain as direct landfalls (about 15% direct vs. about 33% indirect).
• Example: Typhoon Carina (international name Gaemi) in July 2024 never made landfall but dumped a month's worth of rain on Quezon City in a single day, leaving about 40 dead and over PHP 8 billion in damage.
• So even when a typhoon misses the Philippines, prepare for heavy rain.

[Why Manila floods so often]
• It is mostly flat, low-lying land, with some areas at or below sea level.
• Flood-prone areas: around the Marikina and Pasig rivers, Malabon, Navotas, and parts of Mandaluyong.
• Drainage dating back to Spanish and American times lacks capacity, and informal settlements along rivers and low ground plus unchecked development clog waterways.
• The host sees trash dumped into drains and streets as the biggest problem.
• Groundwater overuse makes some areas sink about 3–6 cm a year, and seawater can flow back into the city at high tide.

[Rainy and dry seasons]
• The rainy (wet) season usually runs June–November, with typhoons and downpours most frequent July–October.
• The dry season is roughly January–May, with clear skies ideal for golf and diving trips.
• Low coastal areas like Manila, Cebu and Davao are humid with frequent rain and floods, while northern highlands like Baguio get lots of rain but stay cool.
• The rainiest city named is a highland city in Benguet, northern Luzon (check the video for the name).

[Watching typhoon news]
• According to PAGASA, about 20 typhoons form near or affect the Philippines each year on average, and about 8–10 pass through or make landfall.
• PAGASA gives typhoons its own local names separate from international names, so the same storm may be named differently in different news reports.
• The host urges holiday visitors to always check the weather.

⏱ Chapters
00:04 Korea's heatwave vs. Philippine downpours
01:04 July 2025 typhoon damage
02:05 Study on indirect typhoon effects
04:09 Why Manila floods
06:10 Rainy and dry seasons
07:11 Regional weather and where typhoons form
08:12 PAGASA's own typhoon names
09:15 How Korean and Philippine weather are linked

💬 What viewers said (14 comments)
• Many thanked the host for a well-organized information video.
• One viewer said Manila's traffic has become hell with all the new condos, and flooding makes it worse.
• One viewer heading there next week plans to get hotel massages if the weather is bad, and others shared views on climate change in general.