Mexico City records about 846mm of rain across roughly 125 wet days a year, which is a 34% chance on an average day. July is the wettest month at 170mm (20% of the annual total) and February the driest at 5mm. Local rain type: thunderstorms. Essential from June through September — afternoon thunderstorms are daily events. Mornings are usually clear, so plan outdoor activities before 2 PM during rainy season.
Chance of rain on an average day: 34%
Rainfall climatology for Mexico 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 | 846mm |
| Rain days per year | 125 |
| Odds on an average day | 34% |
| Wettest month | July — 170mm over 26 days |
| Driest month | February — 5mm over 1 days |
| Rain type | thunderstorms |
| Best dry window | November through April is dry season with clear skies and pleasant temperatures. |
| Worst rain window | July and August bring intense daily thunderstorms, usually between 3-7 PM. |
July delivers 3300% more rain than February (170mm vs 5mm). That gap is the difference between planning around showers and ignoring them.
20% of the year's rain falls in July alone, so Mexico City has a genuine wet season rather than evenly spread showers.
Mexico City rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 26 days in July 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 | 11mm | 2 | 7% | 22°C |
| February | 5mm | 1 | 3% | 22°C |
| March | 10mm | 2 | 7% | 22°C |
| April | 26mm | 4 | 13% | 23°C |
| May | 52mm | 8 | 27% | 24°C |
| June | 135mm | 21 | 70% | 25°C |
| July | 170mm | 26 | 87% | 25°C |
| August | 152mm | 24 | 80% | 25°C |
| September | 145mm | 23 | 77% | 25°C |
| October | 75mm | 12 | 40% | 24°C |
| November | 15mm | 2 | 7% | 23°C |
| December | 8mm | 1 | 3% | 22°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Mexico 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.
Mexico City records rain on roughly 125 days a year — about a 34% chance on any given day — totalling around 846mm.
July, with about 170mm over 26 rain days. That is 20% of the entire year's rainfall in a single month.
February is the driest month at 5mm across roughly 1 days. November through April is dry season with clear skies and pleasant temperatures.
Essential from June through September — afternoon thunderstorms are daily events. Mornings are usually clear, so plan outdoor activities before 2 PM during rainy season.
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.