The hottest month in Chengdu is typically August, with daytime highs averaging around 31.3°C (88°F), based on 10 years of historical weather data. Overnight lows during this period average near 23.4°C (74°F).

What is the coldest month in Chengdu?

The coldest month in Chengdu is typically January, with overnight lows averaging around 3.3°C (38°F) and daytime highs near 10.5°C (51°F), based on 10 years of historical weather data.

When does the rainy season start in Chengdu?

Chengdu has a clearly defined rainy season running roughly from July to September, based on 10 years of historical rainfall data. July is typically the wettest month, averaging about 291 mm of rain. Outside this window, rainfall is much lighter for the rest of the year.

What's the best time of year to visit Chengdu?

The best time to visit Chengdu is typically March to April, when daytime highs average a comfortable 21.1°C (70°F). Rainfall during this window averages around 67 mm, well below the 291 mm seen in July, the wettest month. This is based on 10 years of historical weather data.

Is Chengdu's air quality safe right now?

As of the latest reading, Chengdu's air quality index (AQI) is 46, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.

Atmospheric Details

Wind

3 km/h

NE · Light Breeze · Max 8 km/h

Humidity

81 %

High · feels muggy

UV Index

Moderate

Visibility

16 km

Excellent

Pressure

967 hPa

Low · change likely

Dew Point

16°C

Somewhat humid

Today vs Normal

22°C-6° below normal

The long-term average high for today is 28°C.

14 of the last 19 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

Red = above normal, blue = at or below · last 12 days

Air Quality

Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Health & Activity Advice

✅ Good for Outdoors

UV index is 3 today — low. Minimal sun protection is needed for most outdoor activity.

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Conditions are comfortable for outdoor activity at most points during the day today.