Hanoi · AutumnMonth summary
Hanoi weather in September
✅ Good
🌡️ Temperature min / max
25°C – 31°C
🌧 Rainy days
71% of days
☀️ Sunshine
9.3h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.0/10
📅 📅 Best month
November (7.9/10)
Quick decision
Should you visit Hanoi 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 (7.0/10). November scores higher but the gap is small.
By trip type
Hanoi 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
🎯 Harvest season — fresh local produce at markets and restaurants Autumn in Hanoi is often underrated: 31°C, golden light and declining crowds. An interesting window. With 71% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. November (7.9/10) is significantly better if possible.
Browse by month
All months for Hanoi
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 15°C | 22°C | 34% | 2.0 | 4.0h | 7.1/10 |
| ⛅ February | 15°C | 23°C | 36% | 1.8 | 3.1h | 7.1/10 |
| 🌤️ March | 19°C | 26°C | 39% | 2.4 | 3.2h | 7.2/10 |
| 🌤️ April | 22°C | 29°C | 41% | 3.5 | 6.7h | 7.4/10 |
| ⛅ May | 25°C | 31°C | 58% | 7.0 | 9.1h | 7.1/10 |
| ⛅ June | 27°C | 33°C | 60% | 8.9 | 10.0h | 7.0/10 |
| ⛅ July | 26°C | 33°C | 67% | 10.2 | 10.1h | 6.6/10 |
| 🌧️ August | 26°C | 32°C | 80% | 13.5 | 8.9h | 5.7/10 |
| ⛅ September | 25°C | 31°C | 71% | 11.4 | 9.3h | 7.0/10 |
| 🌤️ October | 22°C | 29°C | 44% | 6.9 | 9.5h | 7.5/10 |
| ☀️ November | 19°C | 26°C | 28% | 2.0 | 8.6h | 7.9/10 |
| 🌤️ December | 15°C | 22°C | 22% | 1.1 | 6.4h | 7.5/10 |
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, Hanoi averages 31°C, 71% rainy days and 9.3h of sunshine per day. Overall weather score: 7.0/10.
See methodology →
Comparison
September vs November (best month)
The best month is November (score 7.9/10). Difference:
- 🌡️ Max temperature : -5°C
- 🌧 Rainy days : -43%
- ☀️ Sunshine : -0.7h/day
FAQ
FAQ — Hanoi in September
Is September a good time to visit Hanoi?
September is an acceptable time for Hanoi (score 7.0/10). Conditions are decent but not optimal — consider November (7.9/10) if possible.
Does it rain a lot in Hanoi in September?
Yes, 71% of days see rain in September. Plan some indoor activities as backup.
Accommodation
Find a place to stay in Hanoi
Find places to stay in Hanoi in September
Search on Hotels.com
Activities & tours
Activities and tours in Hanoi
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Hanoi
Compare flights from all airlines.
Search flights
←
Explore also
Similar destinations in September
Okinawa🌍 Top destinations
Other top destinations in September
Puerto Vallarta
Banjul
TrinidadWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons