30YearWeather
Hangzhou, September 9
Hangzhou street view during September
Historical Weather Analysis

Hangzhou Weather on September 9 — Best Time to Visit?

Based on 30 years of historical data, we have the answer.

cloudy

30°C

High

22.4°C

Low

26%

Rain

🔥 Feels like 37.1°C (humidity)

partly-cloudy-day
YES, GOOD CHOICE
Peak Season

September 9 is generally a great time to visit Hangzhou. While there is a slight chance of rain (26%), showers are usually brief. Expect comfortable 30°C weather. Expect a bustling atmosphere in Hangzhou right now—this is when the city truly comes alive with visitors.

Currency

CNY

¥ Chinese yuan

Language

Chinese

Driving

Right side

Safety

Moderate Safety

GPI: 2.01

Hangzhou Weather Forecast for September 9

"Warm & Sunny. Expect average highs of 30°C. 26% chance of rain."

What to Wear in Hangzhou in September

Based on historical data for September 9, Hangzhou typically experiences temperatures between 22.4°C and 30°C. We recommend packing t-shirt, light clothing to stay comfortable. With a 26% chance of rain, keeping a raincoat or umbrella handy is a smart move.

Complete Packing Guide

Weekly breakdown & essential items for Hangzhou

View Guide

Smart Suitcase

  • T-Shirt
  • Light Clothing

Average High

extreme-hot

30°C

Daytime Peak

Average Low

extreme-cold

22.4°C

Nighttime Low

Feels Like

partly-cloudy-day

37.1°C

🔥 Heat index effect

Rain Chance

rain

26%

Avg 1.9mm if it rains

Cloud Cover

cloudy

58%

Overcast

Pressure

pressure

1010.8 hPa

Low volatility

Hangzhou Weather Conditions & UV Index

Weather Confidence

30-year variance analysis

94%Highly Predictable

Based on 10 years of data

Temperature
±2.4°CStable
Precipitation
13-40%Predictable

🎯 This date historically delivers consistent weather 94% of the time. Safe to plan outdoor activities with confidence.

Sun Exposure

UV Index & Safety Guide

3.1Moderate
036811+

Protection Needed

SPF 30 recommended

Safe Sun Windows
Morning

05:00 - 10:00

Afternoon

16:00 - 18:00

Time to Sunburn

Type I-II

🔴 26 min to burn

Type III-IV

🟡 39 min to burn

Type V-VI

🟢 65 min to burn

UV estimate based on latitude, season & cloud cover. Actual UV may vary.

Outdoor Comfort

How pleasant is it outside?

46Poor
TemperatureHot
HumidityMuggy
WindLight Breeze

Dew Point

25.7°C

Humid/Sticky

Heat Index

37.1°C

Feels hotter

😕 Best outdoor time:
Morning hours (before 11 AM)

Travel & Logistics Insights

Local Calendar

Business Day

Standard hours in China

Flight Traffic

High

93/100 pressure index

Health Advisory

Required

2 vaccines • View Details →

Landing Slots

~435

Daily arrival options (inc. codeshare)

Sunrise, Sunset & Wind in Hangzhou

Daylight & Sun

Solar Elevation Cycle

🌅 Sunrise

05:41

☀️ Noon

11:58

🌇 Sunset

18:15

⏱️ Daylight

12h 33m

Golden Hour
Morning05:41 - 06:13
17:43 - 18:15Evening

Wind Speed

wind

13 km/h

Gentle breeze

Sunshine

clear-day

8.6 hrs

Direct Sun (Cloud-free)

Humidity

humidity

78%

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

79/100

Tourist Crowds

🟡 Busy

85/100

Price Level

💰💰💰 Expensive

90/100

Health & Wellbeing

Meteo-Health Forecast

85Score
Atmospheric Pressure1010.8 hPa
Volatility:Low
Migraine RiskLow

Stable conditions. Low risk of headaches.

Joint Pain RiskMedium

Mild discomfort possible for arthritic conditions.

Fishing IndexFair

Moderate fish activity expected.

Air Quality Forecast
197AQI
Unhealthy
PM2.5 Concentration243.1 µg/m³

Unhealthy. Everyone should reduce outdoor activities.

Regional Safety Profile

Stable

Seismic Activity

Zero seismic activity detected in 30 years.

Total events (30y):0
💡 No earthquake preparedness needed. Enjoy your stay!
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Hangzhou on September 9 averages 30°C with a 26% precipitation probability. Wedding/Outdoor Event Score: 92/100."

— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology

Hangzhou Weather History (2010–2024)

Temperature History

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Hall of Fame

Records from last 10 years

Hottest
2024
35°C
Coldest
2018
18.4°C
Rainiest
2025
21.7mm

Compare Other Cities

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📍 Is Hangzhou Worth Visiting on September 9?

Planning a trip to Hangzhou on September 9? 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°C with a 26% historical precipitation risk.

✈️ Travel Logistics: Approximately 435 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 September 9 recorded in the last 30 years saw temperatures hit 35°C in 2024, while the coldest dropped to 18.4°C in 2018.

Hangzhou Weather FAQ