Mongolia
Ulaanbaatar in January: weather & travel advice
This month's data profile
Clear transition month
Ulaanbaatar in January is climatically mixed. The average daily high is around -15 °C. With about 0 rainy days it is very dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
45/100 · #11
Warmth
#12
Dryness
#1
Sun
#10
Published best categories: none
Ulaanbaatar · JanuaryPhoto: Ulaanbaatar City Tourism Department · CC BY-SA 4.0Climate facts
- Average high
- -15 °C
- Average low
- -25 °C
- Rainy days (est.)
- 0 rainy days (est.)
- Sun (est.)
- 2 h/day
- Humidity
- 90 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| December | -14 | -22 | 1 | 4 | 1.8 | 89 | 2.4 | 45 |
| January (selected) | -15 | -25 | 0 | 3 | 2.3 | 90 | 2.3 | 45 |
| February | -11 | -22 | 1 | 3 | 3.8 | 85 | 2.6 | 48 |
How do the previous and next months compare?
Baseline: January (45/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| December | ±0 | +1.5 °C | +2.5 °C | +0.4 | +1.3 mm | -0.5 h | -1.2 % | +0.1 m/s |
| February | +3 | +4.4 °C | +2.4 °C | +0.1 | +0.3 mm | +1.5 h | -5.2 % | +0.3 m/s |
All twelve months in context

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Where to stay in Ulaanbaatar
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Frequently asked questions
How warm is Ulaanbaatar in January?
The average daily high is around -15 °C, with an average daily low of about -25 °C.
Does it rain a lot in Ulaanbaatar in January?
The curated estimate is about 0 rainy days per month, not a directly measured long-term average. Total precipitation averages around 3 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Ulaanbaatar?
By the climate score, May, June, July and August are the strongest months for Ulaanbaatar. January is not among them.