December 21 is statistically one of the best days of the year in Suzhou. With minimal rain risk (13%) and pleasant highs of 9°C, it's ideal for outdoor adventures. Suzhou is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Suzhou
Currency
CNY
¥ Chinese yuan
Language
Chinese
Driving
Right side
Connect
Suzhou has many free Wi-Fi access points...
Safety
Moderate Safety
GPI: 2.01
Suzhou Weather Forecast for December 21
"Mild & Comfortable. Expect average highs of 9.4°C. 13% chance of rain."
What to Wear in Suzhou in December
Based on historical data for December 21, Suzhou typically experiences temperatures between 1.6°C and 9.4°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (13% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Suzhou
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
9.4°C
Daytime Peak
Average Low
1.6°C
Nighttime Low
Feels Like
7.1°C
❄️ Slightly colder
Rain Chance
13%
Avg 0.7mm if it rains
Cloud Cover
46%
Overcast
Pressure
1027.3 hPa
Medium volatility
Suzhou Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
4.4°C
Dry air
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
High
91/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~106
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Suzhou
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:53
☀️ Noon
11:56
🌇 Sunset
17:00
⏱️ Daylight
10h 6m
Wind Speed
15.7 km/h
Gentle breeze
Sunshine
6.5 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Suzhou
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Suzhou
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
High pressure may reduce activity.
Unhealthy. Everyone should reduce outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Suzhou on December 21 averages 9.4°C with a 13% precipitation probability. Wedding/Outdoor Event Score: 70/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Suzhou Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (December 21) in other destinations
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📍 Is Suzhou Worth Visiting on December 21?
Planning a trip to Suzhou on December 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 9.4°C with a 13% historical precipitation risk.
✈️ Travel Logistics: Approximately 106 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 December 21 recorded in the last 30 years saw temperatures hit 17.2°C in 2016, while the coldest dropped to -6.6°C in 2023.