March 21 is generally a great time to visit Hangzhou. While there is a slight chance of rain (38%), showers are usually brief. Expect comfortable 17°C weather. As it's peak season for Hangzhou, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Hangzhou
Currency
CNY
¥ Chinese yuan
Language
Chinese
Driving
Right side
Safety
Moderate Safety
GPI: 2.01
Hangzhou Weather Forecast for March 21
"Mild & Comfortable. Expect average highs of 16.7°C. 38% chance of rain."
What to Wear in Hangzhou in March
Based on historical data for March 21, Hangzhou typically experiences temperatures between 7.7°C and 16.7°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 38% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Hangzhou
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
16.7°C
Daytime Peak
Average Low
7.7°C
Nighttime Low
Feels Like
16.7°C
🌤️ Feels accurate
Rain Chance
38%
Avg 3.5mm if it rains
Cloud Cover
72%
Overcast
Pressure
1018.6 hPa
Medium volatility
Hangzhou 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
🔴 31 min to burn
Type III-IV
🟡 47 min to burn
Type V-VI
🟢 78 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
12.2°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
High
97/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~453
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hangzhou
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:04
☀️ Noon
12:08
🌇 Sunset
18:11
⏱️ Daylight
12h 7m
Wind Speed
15.3 km/h
Gentle breeze
Sunshine
5.7 hrs
Direct Sun (Cloud-free)
Humidity
75%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hangzhou
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 Hangzhou
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.
Unhealthy. Everyone should reduce outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Hangzhou on March 21 averages 16.7°C with a 38% precipitation probability. Wedding/Outdoor Event Score: 79/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Hangzhou Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
March 27
18.7°C • 31% rain
Score
89
March 28
18.8°C • 33% rain
Score
89
March 25
18.3°C • 32% rain
Score
87
💡 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 Hangzhou Worth Visiting on March 21?
Planning a trip to Hangzhou 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 16.7°C with a 38% historical precipitation risk.
✈️ Travel Logistics: Approximately 453 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 10 vaccinations are recommended for China, including COVID-19.
📊 Historical Extremes: The hottest March 21 recorded in the last 30 years saw temperatures hit 25.4°C in 2020, while the coldest dropped to 4.8°C in 2018.