Hangzhou · AutumnMonth summary
Hangzhou weather in September
✅ Good
🌡️ Temperature min / max
22°C – 29°C
🌧 Rainy days
47% of days
☀️ Sunshine
9.6h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
May (7.5/10)
Quick decision
Should you visit Hangzhou in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 29°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in September (7.5/10). May scores higher but the gap is small.
By trip type
Hangzhou in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
Autumn in Hangzhou is often underrated: 29°C, golden light and declining crowds. An interesting window. With 47% of rainy days, always have indoor alternatives planned. A good balance between weather and crowds, even if May (7.5/10) remains theoretically better.
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All months for Hangzhou
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 2°C | 10°C | 34% | 2.5 | 7.3h | 4.3/10 |
| 🌦️ February | 3°C | 11°C | 39% | 2.9 | 6.9h | 4.2/10 |
| 🌦️ March | 8°C | 17°C | 42% | 3.4 | 7.2h | 6.0/10 |
| 🌦️ April | 13°C | 23°C | 42% | 4.2 | 8.3h | 7.3/10 |
| 🌤️ May | 18°C | 26°C | 44% | 5.4 | 8.8h | 7.5/10 |
| 🌦️ June | 22°C | 29°C | 62% | 11.8 | 7.5h | 7.1/10 |
| 🌤️ July | 26°C | 33°C | 54% | 6.2 | 10.8h | 7.0/10 |
| 🌤️ August | 26°C | 34°C | 49% | 5.6 | 11.7h | 7.0/10 |
| 🌤️ September | 22°C | 29°C | 47% | 4.7 | 9.6h | 7.5/10 |
| 🌤️ October | 15°C | 22°C | 29% | 1.9 | 7.8h | 7.4/10 |
| 🌤️ November | 10°C | 18°C | 34% | 2.4 | 7.5h | 7.0/10 |
| ⛅ December | 3°C | 12°C | 23% | 1.6 | 8.6h | 5.8/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Hangzhou averages 29°C, 47% rainy days and 9.6h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
September vs May (best month)
The best month is May (score 7.5/10). Difference:
- 🌡️ Max temperature : -3°C
- 🌧 Rainy days : -3%
- ☀️ Sunshine : -0.8h/day
FAQ
FAQ — Hangzhou in September
Is September a good time to visit Hangzhou?
September is an excellent time to visit Hangzhou (score 7.5/10). With 29°C, 9.6h of sunshine and 47% rain, conditions are very favourable.
What to do in Hangzhou in September?
With 29°C max and 9.6h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Hangzhou
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