Hong Kong · AutumnMonth summary
Hong Kong weather in September
✅ Good
🌡️ Temperature min / max
77°F – 84°F
🌧 Rainy days
72% of days
☀️ Sunshine
10.7h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.2/10
📅 📅 Best month
October (7.9/10)
Quick decision
Should you visit Hong Kong in September?
✅ Good
✅ Yes if: you're willing to accept showers in exchange for lower prices and fewer tourists.
❌ No if: you're planning 100% outdoor activities — rain is frequent.
Our take: Favourable conditions in September (7.2/10). October scores higher but the gap is small.
By trip type
Hong Kong in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
Autumn in Hong Kong is often underrated: 29°F, golden light and declining crowds. An interesting window. With 72% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. October (7.9/10) is significantly better if possible.
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Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 57°F | 66°F | 19% | 0.0in | 9.0h | 7.3/10 |
| 🌤️ February | 57°F | 68°F | 26% | 0.1in | 8.5h | 7.3/10 |
| 🌦️ March | 64°F | 72°F | 42% | 0.1in | 8.6h | 7.3/10 |
| 🌤️ April | 70°F | 77°F | 54% | 0.2in | 9.2h | 7.3/10 |
| ⛅ May | 75°F | 81°F | 70% | 0.3in | 9.9h | 7.2/10 |
| 🌦️ June | 79°F | 84°F | 91% | 0.5in | 10.0h | 7.0/10 |
| ⛅ July | 79°F | 86°F | 84% | 0.4in | 11.7h | 7.0/10 |
| 🌦️ August | 79°F | 84°F | 86% | 0.5in | 10.2h | 7.0/10 |
| ⛅ September | 77°F | 84°F | 72% | 0.4in | 10.7h | 7.2/10 |
| 🌤️ October | 72°F | 81°F | 36% | 0.2in | 10.1h | 7.9/10 |
| 🌤️ November | 66°F | 75°F | 21% | 0.1in | 9.5h | 7.9/10 |
| 🌤️ December | 57°F | 68°F | 11% | 0.0in | 9.0h | 7.6/10 |
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, Hong Kong averages 84°F, 72% rainy days and 10.7h of sunshine per day. Overall weather score: 7.2/10.
See methodology →
Comparison
September vs October (best month)
The best month is October (score 7.9/10). Difference:
- 🌡️ Max temperature : -2°F
- 🌧 Rainy days : -36%
- ☀️ Sunshine : -0.6h/day
FAQ
FAQ — Hong Kong in September
Is September a good time to visit Hong Kong?
September is an acceptable time for Hong Kong (score 7.2/10). Conditions are decent but not optimal — consider October (7.9/10) if possible.
Does it rain a lot in Hong Kong in September?
Yes, 72% of days see rain in September. Plan some indoor activities as backup.
Accommodation
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Activities & tours
Activities and tours in Hong Kong
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