September 20 is generally a great time to visit Shanghai. While there is a slight chance of rain (32%), showers are usually brief. Expect comfortable 27°C weather. Shanghai is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Shanghai
Currency
CNY
¥ Chinese yuan
Language
Chinese
Driving
Right side
Connect
Shanghai's area code for landlines is21,...
Safety
Moderate Safety
GPI: 2.01
Shanghai Weather Forecast for September 20
"Warm & Sunny. Expect average highs of 26.5°C. 32% chance of rain."
What to Wear in Shanghai in September
Based on historical data for September 20, Shanghai typically experiences temperatures between 20.9°C and 26.5°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 32% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Shanghai
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
26.5°C
Daytime Peak
Average Low
20.9°C
Nighttime Low
Feels Like
27.7°C
☀️ Minor difference
Rain Chance
32%
Avg 2mm if it rains
Cloud Cover
61%
Overcast
Pressure
1013.1 hPa
Low volatility
Shanghai Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 78% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 28 min to burn
Type III-IV
🟡 42 min to burn
Type V-VI
🟢 70 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
22.6°C
Humid/Sticky
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Morning hours (before 11 AM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~2,817
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Shanghai
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:42
☀️ Noon
11:49
🌇 Sunset
17:56
⏱️ Daylight
12h 14m
Wind Speed
17.1 km/h
Gentle breeze
Sunshine
7.3 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Shanghai
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 Shanghai
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Very unhealthy. Avoid outdoor activities. Wear N95 mask if you must go out.
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, Shanghai on September 20 averages 26.5°C with a 32% precipitation probability. Wedding/Outdoor Event Score: 91/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Shanghai Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 25
26.6°C • 14% rain
Score
100
September 24
26.4°C • 17% rain
Score
97
September 26
26.7°C • 16% rain
Score
97
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 20) in other destinations
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Czech Republic
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United Kingdom
Amsterdam
Netherlands
🌍 Explore the same date in different destinations around the world
📍 Is Shanghai Worth Visiting on September 20?
Planning a trip to Shanghai on September 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 26.5°C with a 32% historical precipitation risk.
✈️ Travel Logistics: Approximately 2,817 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 28.4°C (tropical bath). Wave conditions are generally surfers only with heights around 1.26m.
📊 Historical Extremes: The hottest September 20 recorded in the last 30 years saw temperatures hit 32°C in 2021, while the coldest dropped to 17.6°C in 2020.