Photo: Zazaa Mongolia · CC BY-SA 4.0 · Wikimedia Commons
UlaanbaatarReport this photo · linked, not stored
UlaanbaatarReport this photo · linked, not stored
Climate guideThirty-year normals for Ulaanbaatar
Ulaanbaatar climate by month
Cold semi-arid · BSkBest May–Jun · Aug
Annual mean0°day and night
Seasonal swing37°warmest vs coolest
Precipitation229 mm58 wet days a year
47.91° N, 106.88° EElevation 1,284 mUTC+8 · Ulaanbaatar Standard Time
When to goUlaanbaatar · weather score
Best timeMay–Jun · Aug
October: high / low6° / -5°
iSummary
What the weather is like
Ulaanbaatar has a cold semi-arid climate (Köppen BSk): little rain, large day–night swings and strong sunshine.
The warmest month is July, when afternoons average 23° and nights 12°. January is the coolest month, with highs of -13° and lows of -26°. The difference between the warmest and the coolest month is about 37°, a large swing typical of continental interiors.
About 229 mm of precipitation falls in an average year. July is the wettest month (60 mm, 13 wet days) and January the driest (2 mm, 1 wet days). Cloud cover ranges from 23% in October to 38% in June.
Year in figures
- Hottest afternoons
- 23° · July
- Coldest nights
- -26° · January
- Wettest month
- July
- Driest month
- January
- Clearest skies
- October · 23% cloud
- Longest day
- 16 h 00 min
- Shortest day
- 8 h 25 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | -13° | -8° | 0° | 8° | 16° | 21° | 23° | 21° | 15° | 6° | -4° | -11° |
| Average low | -26° | -23° | -15° | -5° | 2° | 8° | 12° | 9° | 2° | -5° | -15° | -22° |
| Precipitation | 2 mm | 2 mm | 4 mm | 6 mm | 17 mm | 39 mm | 60 mm | 60 mm | 24 mm | 8 mm | 4 mm | 3 mm |
| Wet days (≥1 mm) | 0.6 | 0.9 | 1.9 | 2.8 | 6 | 10.2 | 13.4 | 11.5 | 5.5 | 3 | 1.9 | 0.8 |
| Cloud cover | 24% | 26% | 28% | 31% | 32% | 38% | 36% | 34% | 27% | 23% | 23% | 25% |
| Daylight | 8h 48 | 10h 14 | 11h 49 | 13h 37 | 15h 08 | 16h 00 | 15h 40 | 14h 21 | 12h 38 | 10h 55 | 9h 19 | 8h 25 |
| Month score | 57 | 56 | 54 | 51 | 72 | 73 | 66 | 71 | 71 | 51 | 54 | 56 |
ivMonth by month
Ulaanbaatar in every month
January57
-13° / -26°
2 mm · 0.6 wet day
February56
-8° / -23°
2 mm · 0.9 wet day
March54
0° / -15°
4 mm · 1.9 wet days
April51
8° / -5°
6 mm · 2.8 wet days
May72
16° / 2°
17 mm · 6 wet days
June73
21° / 8°
39 mm · 10.2 wet days
July66
23° / 12°
60 mm · 13.4 wet days
August71
21° / 9°
60 mm · 11.5 wet days
September71
15° / 2°
24 mm · 5.5 wet days
October51
6° / -5°
8 mm · 3 wet days
November54
-4° / -15°
4 mm · 1.9 wet days
December56
-11° / -22°
3 mm · 0.8 wet day