Ya'an Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Ya'an.
Climate overview of Ya'an
The climate in Ya'an, Sichuan, China, is marked by large temperature swings across the seasons, ranging from 29°C (84°F) in July to 9°C (48°F) in January.
The city has a wet climate, receiving around 1704 mm (67 in) of rain/snowfall per year. Despite the high annual total, it has a distinct rainy season from June to September, with warm summers and cold winters. August is the wettest month.
Ya'an Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ya'an - and find the best time to visit.
Monthly Temperature in Ya'an
In Ya'an, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 29°C (84°F) in July to a chilly 9°C (48°F) in January.
Nighttime temperatures range from 21°C (70°F) in July to 2°C (36°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Ya'an
Ya'an experiences significant rain/snowfall throughout the year, averaging 1704 mm (67 in) of precipitation annually. The seasons in Ya'an bring significant changes in precipitation. The wettest month, August, receives heavy rainfall, with an average of 336 mm (13 in) of precipitation. This rainfall is distributed across 17 rainy days.
In contrast, the driest month, December, experiences much less rainfall, totaling 52 mm (2 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Ya'an Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Humidity in Ya'an by Month
The relative humidity is high throughout the year in Ya'an.
The city experiences its highest humidity in December, reaching 83%. In May, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Ya'an
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June and October
- Warmest weather: July and August
- Fewest rainy days: January, February and December
- Wettest months: June, July, August and September, when rainfall is highest.
- Seasonal pattern: A distinct rainy season from June to September, with warm summers and cold winters
Frequently asked questions about the climate in Ya'an
What is the best time to visit Ya'an?
April, May, June and October typically offer the most optimal weather in Ya'an. In contrast, January, July and August tend to have less optimal conditions. Ya'an has a distinct rainy season from June to September, with warm summers and cold winters.
What temperatures can I expect in Ya'an?
Daytime highs range from 9°C (48°F) in January to 29°C (84°F) in July. Nighttime lows range from 2°C (36°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Ya'an get?
Annual rainfall is around 1704 mm (67 in). August is the wettest month with 336 mm (13 in), while December is the driest with 52 mm (2 in).
Ya'an 3-Day Forecast
Ya'an on the map
Ya'an is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Hangzhou
34°C (93°F) Guangzhou34°C (93°F) Shanghai32°C (90°F) Xi'an
33°C (91°F) Beijing32°C (90°F) Shenzhen32°C (90°F) Chengdu31°C (88°F) Qingdao29°C (84°F) 
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