The month in detail
What to expect in September
Autumn in Hangzhou is often underrated: 29°C, golden light and declining crowds. An interesting window. Expect rain on 30% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if May (8.0/10) remains theoretically better.
September ranks 2 out of 12 months in Hangzhou. Compared to August: −5°C daytime, −1.4h of sun per day.
This month's conditions
What it's like in September
UV index
6 · high
sunscreen and hat advised
Feels like
muggy at times
21°
Daylight
12.2h of daylight
Air quality
poor
AQI 64
Compare
Is September the right month?
The best month in Hangzhou is May (8.0/10), 0.1 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Hangzhou
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Hangzhou
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a city break.
Country · China
🗣️LanguageMandarin
💶CurrencyYuan renminbi (¥)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTemperate
📈Climate trend ⓘ+1.55°C/decade
🔥Hottest monthAugust · 34°C
❄️Coolest monthJanuary · 10°C
🌧️Rainiest month ⓘJune · 44%
🏛️ City break
📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Hangzhou ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ChinaTemperate climate with a 8.0 → 4.1 gap between best and worst month. 10 years of ERA5 data to choose by project.
30.27°N · 120.15°E
Questions
Frequently asked questions
What is the best time to visit Hangzhou?
May is the best month with 26.0°C highs, 18.0°C lows, 5.1h of sunshine and 29.0% rainy days. The months of May & September offer comparable conditions.
How many hours of sunshine does Hangzhou get in May?
Hangzhou averages 5.1 sunshine hours per day in May. It is the sunniest month with a climate score of 7.5/10.
What is the rainiest month in Hangzhou?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Hangzhou in May?
In May, overnight lows reach 18.0°C, while afternoon highs average 26.0°C.
Is Hangzhou good in winter?
In winter (December-February), Hangzhou scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains May with a score of 7.5/10.
When should you avoid Hangzhou?
January is the most difficult month to visit Hangzhou, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Hangzhou in September?
The average UV index reaches 6 in September in Hangzhou (high), with about 12.2h of daylight. Sunscreen and hat advised.