Mongolia · AutumnMonth summary
Mongolia weather in September
✅ Good
🌡️ Temperature min / max
4°C – 17°C
🌧 Rainy days
25% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.2/10
📅 📅 Best month
June (8.2/10)
Quick decision
Should you visit Mongolia in September?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: Favourable conditions in September (7.2/10). June scores higher but the gap is small.
By trip type
Mongolia in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in September
🎯 Shoulder season — good value with reasonable accommodation prices Autumn in Mongolia is often underrated: 17°C, golden light and declining crowds. An interesting window. Rain risk remains low (25% of days), leaving good room for outdoor activities. Not the best window, but acceptable if dates are constrained. June (8.2/10) is significantly better if possible.
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All months for Mongolia
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ❄️ January | -23°C | -13°C | 3% | 0.1 | 8.0h | 5.2/10 |
| ❄️ February | -21°C | -9°C | 2% | 0.1 | 9.8h | 5.8/10 |
| 🌨️ March | -9°C | 2°C | 7% | 0.3 | 11.2h | 6.1/10 |
| 🌫️ April | -3°C | 10°C | 15% | 0.5 | 12.1h | 7.0/10 |
| ⛅ May | 2°C | 17°C | 20% | 0.9 | 13.3h | 7.5/10 |
| 🌤️ June | 9°C | 23°C | 31% | 1.8 | 13.3h | 8.2/10 |
| 🌤️ July | 13°C | 25°C | 40% | 2.7 | 12.6h | 8.0/10 |
| 🌤️ August | 11°C | 22°C | 40% | 3.1 | 12.3h | 7.6/10 |
| ⛅ September | 4°C | 17°C | 25% | 1.5 | 11.0h | 7.2/10 |
| 🌫️ October | -4°C | 6°C | 13% | 0.4 | 9.8h | 5.6/10 |
| ❄️ November | -13°C | -4°C | 12% | 0.4 | 8.7h | 5.0/10 |
| ❄️ December | -21°C | -12°C | 4% | 0.1 | 7.9h | 5.1/10 |
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, Mongolia averages 17°C, 25% rainy days and 11.0h of sunshine per day. Overall weather score: 7.2/10.
See methodology →
Comparison
September vs June (best month)
The best month is June (score 8.2/10). Difference:
- 🌡️ Max temperature : +6°C
- 🌧 Rainy days : +6%
- ☀️ Sunshine : +2.3h/day
FAQ
FAQ — Mongolia in September
Is September a good time to visit Mongolia?
September is an acceptable time for Mongolia (score 7.2/10). Conditions are decent but not optimal — consider June (8.2/10) if possible.
What to do in Mongolia in September?
With 17°C max and 11.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Mongolia
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