Beijing records about 571mm of rain across roughly 66 wet days a year, which is a 18% chance on an average day. July is the wettest month at 185mm (32% of the annual total) and January the driest at 3mm. Local rain type: monsoon. Beijing has a dramatic wet/dry split — July-August monsoon can be torrential while winter is bone-dry. Summer umbrellas are essential.
Chance of rain on an average day: 18%
Rainfall climatology for Beijing. 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 | 571mm |
| Rain days per year | 66 |
| Odds on an average day | 18% |
| Wettest month | July — 185mm over 21 days |
| Driest month | January — 3mm over 1 days |
| Rain type | monsoon |
| Best dry window | September through November offers the famous "Beijing autumn" — clear, dry, and comfortably cool. |
| Worst rain window | July and August bring over 60% of the year's total rainfall as heavy monsoon storms. |
July delivers 6067% more rain than January (185mm vs 3mm). That gap is the difference between planning around showers and ignoring them.
32% of the year's rain falls in July alone, so Beijing has a genuine wet season rather than evenly spread showers.
Beijing rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 21 days in July against 1 in January — 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 | 3mm | 1 | 3% | 2°C |
| February | 6mm | 1 | 3% | 2°C |
| March | 8mm | 1 | 3% | 6°C |
| April | 22mm | 3 | 10% | 13°C |
| May | 34mm | 4 | 13% | 20°C |
| June | 78mm | 9 | 30% | 27°C |
| July | 185mm | 21 | 70% | 31°C |
| August | 160mm | 19 | 63% | 31°C |
| September | 46mm | 5 | 17% | 27°C |
| October | 17mm | 2 | 7% | 20°C |
| November | 8mm | 1 | 3% | 13°C |
| December | 3mm | 1 | 3% | 6°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Beijing 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.
Beijing records rain on roughly 66 days a year — about a 18% chance on any given day — totalling around 571mm.
July, with about 185mm over 21 rain days. That is 32% of the entire year's rainfall in a single month.
January is the driest month at 3mm across roughly 1 days. September through November offers the famous "Beijing autumn" — clear, dry, and comfortably cool.
Beijing has a dramatic wet/dry split — July-August monsoon can be torrential while winter is bone-dry. Summer umbrellas are essential.
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.