September 11 is generally a great time to visit Ulaanbaatar. While there is a slight chance of rain (15%), showers are usually brief. Expect comfortable 18°C weather.
View the full calendar
Essential Travel Info for Ulaanbaatar
Currency
MNT
₮ Mongolian tögrög
Language
Mongolian
Driving
Right side
Connect
On Peace Avenue at the southwest corner ...
Safety
High Safety
GPI: 1.775
Ulaanbaatar Weather Forecast for September 11
"Mild & Comfortable. Expect average highs of 17.8°C. 15% chance of rain."
What to Wear in Ulaanbaatar in September
Based on historical data for September 11, Ulaanbaatar typically experiences temperatures between 5.1°C and 17.8°C. We recommend packing light jacket, long pants, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (15% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Ulaanbaatar
Smart Suitcase
- Light Jacket
- Long Pants
- Layers (Onion System)
Average High
17.8°C
Daytime Peak
Average Low
5.1°C
Nighttime Low
Feels Like
17.8°C
🌤️ Feels accurate
Rain Chance
15%
Avg 0.6mm if it rains
Cloud Cover
46%
Overcast
Pressure
1013.6 hPa
Medium volatility
Ulaanbaatar Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 92% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 19:00
Type I-II
🔴 26 min to burn
Type III-IV
🟡 39 min to burn
Type V-VI
🟢 65 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
9.9°C
Dry air
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Mongolia
Flight Traffic
N/A
0/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
N/A
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Ulaanbaatar
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:24
☀️ Noon
12:50
🌇 Sunset
19:16
⏱️ Daylight
12h 52m
Wind Speed
16.7 km/h
Gentle breeze
Sunshine
10.1 hrs
Direct Sun (Cloud-free)
Humidity
60%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Ulaanbaatar
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Ulaanbaatar
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Ulaanbaatar on September 11 averages 17.8°C with a 15% precipitation probability. Wedding/Outdoor Event Score: 87/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Ulaanbaatar Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 4
18.8°C • 14% rain
Score
98
September 5
18.4°C • 14% rain
Score
96
September 6
17.8°C • 11% rain
Score
94
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 11) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Ulaanbaatar Worth Visiting on September 11?
Planning a trip to Ulaanbaatar on September 11? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 17.8°C with a 15% historical precipitation risk.
💉 Health Advisory: 8 vaccinations are recommended for Mongolia, including COVID-19.
📊 Historical Extremes: The hottest September 11 recorded in the last 30 years saw temperatures hit 22.6°C in 2020, while the coldest dropped to 2.8°C in 2023.