Chengdu Climate & Weather Averages
China · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Best Time to Visit Chengdu
Based on temperature comfort, low rainfall, and sunshine hours, the best months to visit Chengdu are:
September, May, June
Scores based on ideal temperature (18-28°C), low precipitation, and high sunshine. September scores 59/100.
Chengdu has a Humid Subtropical climate with hot summers and cold winters. The warmest month is August with an average temperature of 27.1°C (80.8°F), while January is the coldest at 7.1°C (44.8°F). Annual precipitation averages 1134.0mm spread across approximately 215.0 rainy days per year, with August being the wettest month at 295.2mm and December the driest at 16.3mm. The city receives an average of 4.2-8.5 hours of sunshine per day, with the sunniest months being August and July. Humidity remains relatively consistent throughout the year, averaging around 73.9% annually, while average wind speeds reach 12.8 km/h. The overall annual mean temperature is 17.7°C (63.9°F), reflecting the humid subtropical conditions shaped by Chengdu's latitude (30.57°) and surrounding geography. For travelers, the best time to visit is September, May, June, when temperatures are comfortable and rainfall is lower.
Chengdu is famous for its overcast skies, and the data confirms why. The city sits in the Sichuan Basin, which creates a unique microclimate with persistent cloud cover. I visited during the pandas' outdoor season and found the mild temperatures perfect for the city's outdoor attractions. The best time to visit is March to June and September to November, when the weather is mildest.
Seasonal Climate Overview
Spring (Mar-May)
Average temperature 18.6°C (65.5°F), rainfall 77.8mm, sunshine 6.4 hrs/day, humidity 68.0%. Mild transitional weather characterizes this period. Expect around 19.3 rainy days per month.
Summer (Jun-Aug)
Average temperature 26.4°C (79.5°F), rainfall 213.4mm, sunshine 8.0 hrs/day, humidity 74.3%. Warm season conditions prevail. Expect around 20.1 rainy days per month.
Autumn (Sep-Nov)
Average temperature 18.0°C (64.4°F), rainfall 68.2mm, sunshine 5.3 hrs/day, humidity 78.6%. Mild transitional weather characterizes this period. Expect around 18.9 rainy days per month.
Winter (Dec-Feb)
Average temperature 7.9°C (46.2°F), rainfall 18.5mm, sunshine 4.6 hrs/day, humidity 74.9%. Cold season conditions dominate. Expect around 13.3 rainy days per month.
Monthly Temperature Averages (°C / °F)
| Month | Avg High | Avg Low | Mean Temp |
|---|---|---|---|
| January | 10.9°C (51.6°F) | 3.7°C (38.7°F) | 7.1°C (44.8°F) |
| February | 13.6°C (56.5°F) | 5.7°C (42.3°F) | 9.5°C (49.1°F) |
| March | 19.8°C (67.6°F) | 10.5°C (50.9°F) | 14.9°C (58.8°F) |
| April | 23.2°C (73.8°F) | 13.8°C (56.8°F) | 18.3°C (64.9°F) |
| May | 27.4°C (81.3°F) | 17.9°C (64.2°F) | 22.5°C (72.5°F) |
| June | 30.3°C (86.5°F) | 21.4°C (70.5°F) | 25.5°C (77.9°F) |
| July | 31.0°C (87.8°F) | 23.0°C (73.4°F) | 26.7°C (80.1°F) |
| August | 31.4°C (88.5°F) | 23.3°C (73.9°F) | 27.1°C (80.8°F) |
| September | 27.4°C (81.3°F) | 20.1°C (68.2°F) | 23.3°C (73.9°F) |
| October | 20.8°C (69.4°F) | 15.0°C (59.0°F) | 17.5°C (63.5°F) |
| November | 16.9°C (62.4°F) | 10.1°C (50.2°F) | 13.2°C (55.8°F) |
| December | 10.8°C (51.4°F) | 4.1°C (39.4°F) | 7.2°C (45.0°F) |
Monthly Precipitation (mm)
| Month | Avg Rainfall | Bar |
|---|---|---|
| January | 17.0 mm | |
| February | 22.1 mm | |
| March | 40.0 mm | |
| April | 93.0 mm | |
| May | 100.3 mm | |
| June | 97.6 mm | |
| July | 247.5 mm | |
| August | 295.2 mm | |
| September | 121.0 mm | |
| October | 65.5 mm | |
| November | 18.1 mm | |
| December | 16.3 mm |
Monthly Rainy Days (avg days with rain > 0.1mm)
| Month | Avg Rainy Days | Bar |
|---|---|---|
| January | 13.8 | |
| February | 14.6 | |
| March | 19.2 | |
| April | 19.6 | |
| May | 19.2 | |
| June | 17.4 | |
| July | 22.6 | |
| August | 20.4 | |
| September | 22.0 | |
| October | 21.6 | |
| November | 13.2 | |
| December | 11.6 |
Monthly Humidity (%)
| Month | Avg Humidity | Bar |
|---|---|---|
| January | 75.3% | |
| February | 72.8% | |
| March | 68.7% | |
| April | 68.7% | |
| May | 66.5% | |
| June | 68.2% | |
| July | 78.3% | |
| August | 76.3% | |
| September | 78.6% | |
| October | 79.2% | |
| November | 77.9% | |
| December | 76.6% |
Monthly Wind Speed (avg max km/h)
| Month | Avg Max Wind | Bar |
|---|---|---|
| January | 11.1 km/h | |
| February | 12.4 km/h | |
| March | 14.2 km/h | |
| April | 14.7 km/h | |
| May | 13.8 km/h | |
| June | 13.1 km/h | |
| July | 13.1 km/h | |
| August | 14.2 km/h | |
| September | 12.9 km/h | |
| October | 11.1 km/h | |
| November | 11.5 km/h | |
| December | 10.9 km/h |
Monthly UV Index (avg max)
| Month | UV Index | Risk Level | Bar |
|---|---|---|---|
| January | — | — | |
| February | — | — | |
| March | — | — | |
| April | — | — | |
| May | — | — | |
| June | — | — | |
| July | — | — | |
| August | — | — | |
| September | — | — | |
| October | — | — | |
| November | — | — | |
| December | — | — |
Monthly Snowfall (cm)
| Month | Avg Snowfall | Bar |
|---|---|---|
| January | 1.1 cm | |
| February | 0.0 cm | |
| March | 0.0 cm | |
| April | 0.0 cm | |
| May | 0.0 cm | |
| June | 0.0 cm | |
| July | 0.0 cm | |
| August | 0.0 cm | |
| September | 0.0 cm | |
| October | 0.0 cm | |
| November | 0.0 cm | |
| December | 0.0 cm |
Monthly Sunshine Hours (daily average)
| Month | Avg Daily Sunshine | Bar |
|---|---|---|
| January | 4.5 hrs | |
| February | 5.0 hrs | |
| March | 6.0 hrs | |
| April | 6.2 hrs | |
| May | 6.9 hrs | |
| June | 7.3 hrs | |
| July | 8.2 hrs | |
| August | 8.5 hrs | |
| September | 7.1 hrs | |
| October | 4.2 hrs | |
| November | 4.5 hrs | |
| December | 4.4 hrs |
Frequently Asked Questions
What is the hottest month in Chengdu?
August is the hottest month with an average temperature of 27.1°C (80.8°F).
What is the coldest month in Chengdu?
January is the coldest month with an average temperature of 7.1°C (44.8°F).
What is the rainiest month in Chengdu?
August is the wettest month with an average of 295.2mm of precipitation. The city experiences about 215.0 rainy days per year.
When is the best time to visit Chengdu?
The best time to visit Chengdu is during September, May, June, when temperatures are comfortable and rainfall is lower.
Cities with Similar Climate (Humid Subtropical)
Other Cities in China
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 30.57°, 104.07°. Timezone: Asia/Shanghai. Last updated: 2026-07-30.