October 21 is statistically one of the best days of the year in Ulaanbaatar. With minimal rain risk (7%) and pleasant highs of 5°C, it's ideal for outdoor adventures.
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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 October 21
"Mild & Comfortable. Expect average highs of 5.2°C. 7% chance of snow."
What to Wear in Ulaanbaatar in October
Based on historical data for October 21, Ulaanbaatar typically experiences temperatures between -5°C and 5.2°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (7% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Ulaanbaatar
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
5.2°C
Daytime Peak
Average Low
-5°C
Nighttime Low
Feels Like
2.2°C
❄️ Slightly colder
Snow Chance
7%
Avg 0.3mm if it snows
Snowfall
0.3 cm
~7% chance
Pressure
1022.1 hPa
High volatility
Ulaanbaatar Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 83% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 50 min to burn
Type III-IV
🟡 75 min to burn
Type V-VI
🟢 125 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
-2.4°C
Dry air
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
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
07:20
☀️ Noon
12:38
🌇 Sunset
17:55
⏱️ Daylight
10h 35m
Wind Speed
13.7 km/h
Gentle breeze
Sunshine
8.2 hrs
Direct Sun (Cloud-free)
Humidity
58%
Comfortable
Travel Intelligence
Exclusive flight analytics & health data for Ulaanbaatar
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Ulaanbaatar
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
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 October 21 averages 5.2°C with a 7% precipitation probability. Wedding/Outdoor Event Score: 44/100."
— 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
October 14
6.3°C • 6% rain
Score
49
October 15
6.1°C • 4% rain
Score
48
October 16
6°C • 3% rain
Score
47
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 21) in other destinations
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📍 Is Ulaanbaatar Worth Visiting on October 21?
Planning a trip to Ulaanbaatar on October 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 5.2°C with a 7% historical precipitation risk.
💉 Health Advisory: 8 vaccinations are recommended for Mongolia, including COVID-19.
📊 Historical Extremes: The hottest October 21 recorded in the last 30 years saw temperatures hit 11°C in 2023, while the coldest dropped to -16°C in 2025.