March 21 is generally a great time to visit Shanghai. While there is a slight chance of rain (36%), showers are usually brief. Expect comfortable 16°C weather. Lower tourist interest in Shanghai right now translates to better deals and a more local feel.
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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 March 21
"Mild & Comfortable. Expect average highs of 15.5°C. 36% chance of rain."
What to Wear in Shanghai in March
Based on historical data for March 21, Shanghai typically experiences temperatures between 7.2°C and 15.5°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 36% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Shanghai
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
15.5°C
Daytime Peak
Average Low
7.2°C
Nighttime Low
Feels Like
15.5°C
🌤️ Feels accurate
Rain Chance
36%
Avg 2.4mm if it rains
Cloud Cover
69%
Overcast
Pressure
1018.9 hPa
Medium volatility
Shanghai 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
Type I-II
🔴 30 min to burn
Type III-IV
🟡 45 min to burn
Type V-VI
🟢 75 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
10.9°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
Quiet
23/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~729
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Shanghai
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:58
☀️ Noon
12:02
🌇 Sunset
18:06
⏱️ Daylight
12h 7m
Wind Speed
19.3 km/h
Gentle breeze
Sunshine
6.6 hrs
Direct Sun (Cloud-free)
Humidity
74%
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
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
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 March 21 averages 15.5°C with a 36% precipitation probability. Wedding/Outdoor Event Score: 75/100."
— 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
March 26
17.1°C • 26% rain
Score
86
March 27
17.1°C • 28% rain
Score
86
March 24
16.9°C • 26% rain
Score
85
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (March 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Shanghai Worth Visiting on March 21?
Planning a trip to Shanghai on March 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 15.5°C with a 36% historical precipitation risk.
✈️ Travel Logistics: Approximately 729 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 11.3°C (polar plunge). Wave conditions are generally fun waves with heights around 0.86m.
📊 Historical Extremes: The hottest March 21 recorded in the last 30 years saw temperatures hit 25.3°C in 2020, while the coldest dropped to 3.8°C in 2018.