August 21 sees frequent showers in Shenzhen. Historical data shows a 59% chance of rain, so pack accordingly. Temperatures average 31°C. Expect a bustling atmosphere in Shenzhen right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Shenzhen
Currency
CNY
¥ Chinese yuan
Language
Chinese
Driving
Right side
Safety
Moderate Safety
GPI: 2.01
Shenzhen Weather Forecast for August 21
"Rainy & Overcast. Expect average highs of 30.6°C. 59% chance of rain."
What to Wear in Shenzhen in August
Based on historical data for August 21, Shenzhen typically experiences temperatures between 25.6°C and 30.6°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 59% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Shenzhen
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
30.6°C
Daytime Peak
Average Low
25.6°C
Nighttime Low
Feels Like
42°C
🔥 Heat index effect
Rain Chance
59%
Avg 7.3mm if it rains
Cloud Cover
69%
Moderate rain
Pressure
1006.2 hPa
Low volatility
Shenzhen Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 96% 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 - 18:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
28.2°C
Humid/Sticky
Heat Index
42°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
High
98/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~638
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Shenzhen
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:04
☀️ Noon
12:28
🌇 Sunset
18:52
⏱️ Daylight
12h 48m
Wind Speed
12.8 km/h
Gentle breeze
Sunshine
8.7 hrs
Direct Sun (Cloud-free)
Humidity
87%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Shenzhen
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Shenzhen
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
Zero seismic activity detected in 30 years.
Typhoon Risk
Year-round risk present
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, Shenzhen on August 21 averages 30.6°C with a 59% precipitation probability. Wedding/Outdoor Event Score: 66/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Shenzhen 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
30.8°C • 54% rain
Score
70
August 22
30.8°C • 57% rain
Score
68
August 23
30.8°C • 57% rain
Score
68
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 21) in other destinations
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📍 Is Shenzhen Worth Visiting on August 21?
Planning a trip to Shenzhen 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 30.6°C with a 59% historical precipitation risk.
✈️ Travel Logistics: Approximately 638 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 10 vaccinations are recommended for China, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 26.8°C (tropical bath). Wave conditions are generally lake-like with heights around 0.47m.
📊 Historical Extremes: The hottest August 21 recorded in the last 30 years saw temperatures hit 34.4°C in 2017, while the coldest dropped to 24.4°C in 2018.