August 21 sees frequent showers in Chengdu. Historical data shows a 53% chance of rain, so pack accordingly. Temperatures average 30°C. Chengdu is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Chengdu
Currency
CNY
¥ Chinese yuan
Language
Chinese
Driving
Right side
Connect
China's country code is86. Chengdu's ar...
Safety
Moderate Safety
GPI: 2.01
Chengdu Weather Forecast for August 21
"Rainy & Overcast. Expect average highs of 30.4°C. 53% chance of rain."
What to Wear in Chengdu in August
Based on historical data for August 21, Chengdu typically experiences temperatures between 22.8°C and 30.4°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 53% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Chengdu
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
30.4°C
Daytime Peak
Average Low
22.8°C
Nighttime Low
Feels Like
38.3°C
🔥 Heat index effect
Rain Chance
53%
Avg 5.9mm if it rains
Cloud Cover
72%
Moderate rain
Pressure
1005.4 hPa
Low volatility
Chengdu Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 88% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 19:00
Type I-II
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
26.1°C
Humid/Sticky
Heat Index
38.3°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~329
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Chengdu
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:34
☀️ Noon
13:08
🌇 Sunset
19:42
⏱️ Daylight
13h 7m
Wind Speed
10.7 km/h
Light breeze
Sunshine
8.7 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Chengdu
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Chengdu
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
Unhealthy. Everyone should reduce outdoor activities.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Chengdu on August 21 averages 30.4°C with a 53% precipitation probability. Wedding/Outdoor Event Score: 75/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Chengdu Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
August 28
29°C • 47% rain
Score
80
August 22
30.5°C • 50% rain
Score
77
August 27
29.3°C • 52% rain
Score
77
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Chengdu Worth Visiting on August 21?
Planning a trip to Chengdu on August 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 30.4°C with a 53% historical precipitation risk.
✈️ Travel Logistics: Approximately 329 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for China, including COVID-19.
📊 Historical Extremes: The hottest August 21 recorded in the last 30 years saw temperatures hit 39.3°C in 2022, while the coldest dropped to 19.8°C in 2020.