Ho Chi Minh City records about 1931mm of rain across roughly 142 wet days a year, which is a 39% chance on an average day. September is the wettest month at 327mm (17% of the annual total) and February the driest at 4mm. Local rain type: monsoon. Saigon's wet season (May-November) brings daily afternoon downpours — intense but brief. Dry season is hot and comfortable.
Chance of rain on an average day: 39%
Rainfall climatology for Ho Chi Minh City. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1931mm |
| Rain days per year | 142 |
| Odds on an average day | 39% |
| Wettest month | September — 327mm over 24 days |
| Driest month | February — 4mm over 1 days |
| Rain type | monsoon |
| Best dry window | December through March offers dry, warm weather — the most comfortable months for exploration. |
| Worst rain window | September and October bring the heaviest rainfall — streets can flood for hours after major storms. |
September delivers 8075% more rain than February (327mm vs 4mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 17% of the annual total, so rain in Ho Chi Minh City is spread through the year — there is no season you can rely on being dry.
Ho Chi Minh City rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 24 days in September against 1 in February — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 14mm | 1 | 3% | 31°C |
| February | 4mm | 1 | 3% | 31°C |
| March | 11mm | 1 | 3% | 31°C |
| April | 50mm | 4 | 13% | 32°C |
| May | 218mm | 16 | 53% | 33°C |
| June | 312mm | 23 | 77% | 34°C |
| July | 294mm | 22 | 73% | 34°C |
| August | 270mm | 20 | 67% | 34°C |
| September | 327mm | 24 | 80% | 34°C |
| October | 267mm | 20 | 67% | 33°C |
| November | 116mm | 9 | 30% | 32°C |
| December | 48mm | 4 | 13% | 31°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Ho Chi Minh City we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Ho Chi Minh City records rain on roughly 142 days a year — about a 39% chance on any given day — totalling around 1931mm.
September, with about 327mm over 24 rain days. That is 17% of the entire year's rainfall in a single month.
February is the driest month at 4mm across roughly 1 days. December through March offers dry, warm weather — the most comfortable months for exploration.
Saigon's wet season (May-November) brings daily afternoon downpours — intense but brief. Dry season is hot and comfortable.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.