Jiuzhaigou records about 780mm of rain across roughly 130 wet days a year, which is a 36% chance on an average day. July is the wettest month at 140mm (18% of the annual total) and January the driest at 15mm. Local rain type: steady rain. Summer is the wet season with daily rain. Autumn (September-November) is drier and offers spectacular foliage. A compact umbrella works well — the valley is sheltered from extreme wind.
Chance of rain on an average day: 36%
Rainfall climatology for Jiuzhaigou. 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.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
| Annual rainfall | 780mm |
| Rain days per year | 130 |
| Odds on an average day | 36% |
| Wettest month | July — 140mm over 24 days |
| Driest month | January — 15mm over 3 days |
| Rain type | steady rain |
| Best dry window | October is the sweet spot — dry, clear, with spectacular autumn foliage reflected in the crystal-clear lakes. |
| Worst rain window | July brings heavy rain that clouds the lakes and triggers occasional landslides on mountain roads. |
July delivers 833% more rain than January (140mm vs 15mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 18% of the annual total, so rain in Jiuzhaigou is spread through the year — there is no season you can rely on being dry.
Jiuzhaigou rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 24 days in July against 3 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 | 15mm | 3 | 10% | 5°C |
| February | 20mm | 3 | 10% | 5°C |
| March | 35mm | 6 | 20% | 8°C |
| April | 55mm | 9 | 30% | 12°C |
| May | 85mm | 14 | 47% | 18°C |
| June | 120mm | 20 | 67% | 22°C |
| July | 140mm | 24 | 80% | 25°C |
| August | 110mm | 19 | 63% | 25°C |
| September | 95mm | 16 | 53% | 22°C |
| October | 55mm | 9 | 30% | 18°C |
| November | 25mm | 4 | 13% | 12°C |
| December | 15mm | 3 | 10% | 8°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Jiuzhaigou 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.
Jiuzhaigou records rain on roughly 130 days a year — about a 36% chance on any given day — totalling around 780mm.
July, with about 140mm over 24 rain days. That is 18% of the entire year's rainfall in a single month.
January is the driest month at 15mm across roughly 3 days. October is the sweet spot — dry, clear, with spectacular autumn foliage reflected in the crystal-clear lakes.
Summer is the wet season with daily rain. Autumn (September-November) is drier and offers spectacular foliage. A compact umbrella works well — the valley is sheltered from extreme wind.
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.