Ulaanbaatar, Mongolia Climate & Monthly Averages
The climate of Ulaanbaatar
Located in Mongolia, Ulaanbaatar experiences a humid continental climate with warm summers and cold, often snowy winters. Afternoon temperatures peak near 76°F (25°C) in July and dip to about 10°F (-12°C) in January, with around 13.9 inches (354 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: July - highs near 76°F (25°C)
- Coldest month: January - highs near 10°F (-12°C)
- Record high: 100°F (38°C) · Record low: -42°F (-41°C) (2015–2024)
- Wettest month: August (12 rainy days) · Sunniest: June (12.1 h sun/day)
- Climate type: humid continental - warm summers and cold, often snowy winters
- Snow: about 15 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 76°F (25°C) and overnight lows stay near 56°F (13°C). The coolest month is January, with typical highs of 10°F (-12°C) and lows around -10°F (-24°C). Based on 2015–2024 weather data, temperatures have reached as high as 100°F (38°C) and dropped as low as -42°F (-41°C).
Rain, sun and snow
August is usually the wettest month. It brings about 3.5 inches (90 mm) of rain over 12 days, while January is the driest. June brings the most sunshine, averaging 12.1 hours of sun a day. Snow falls on about 15 days in a typical year, mostly from February through May.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 10° | -10° | 1 | 0.1 in | 8.0 h/day | 70% |
| February | 18° | -4° | 1 | 0.1 in | 9.4 h/day | 66% |
| March | 36° | 14° | 2 | 0.3 in | 10.7 h/day | 46% |
| April | 49° | 27° | 5 | 0.7 in | 11.2 h/day | 41% |
| May | 62° | 36° | 6 | 1.1 in | 12.0 h/day | 42% |
| June | 72° | 49° | 9 | 2.1 in | 12.1 h/day | 53% |
| July | 76° | 56° | 12 | 3.4 in | 11.2 h/day | 62% |
| August | 71° | 51° | 12 | 3.5 in | 11.1 h/day | 68% |
| September | 61° | 40° | 8 | 1.6 in | 9.8 h/day | 63% |
| October | 44° | 26° | 4 | 0.5 in | 9.0 h/day | 55% |
| November | 25° | 7° | 4 | 0.4 in | 7.8 h/day | 60% |
| December | 11° | -6° | 1 | 0.1 in | 7.4 h/day | 68% |
Ulaanbaatar month by month
Ulaanbaatar weather in January
January brings highs around 10°F (-12°C), lows near -10°F (-24°C), about 1 wet days - typically the coldest month and the driest month of the year in Ulaanbaatar.
Ulaanbaatar weather in February
February brings highs around 18°F (-8°C), lows near -4°F (-20°C), about 1 wet days.
Ulaanbaatar weather in March
March brings highs around 36°F (2°C), lows near 14°F (-10°C), about 2 wet days and roughly 2 snowy days.
Ulaanbaatar weather in April
April brings highs around 49°F (10°C), lows near 27°F (-3°C), about 5 wet days and roughly 3 snowy days.
Ulaanbaatar weather in May
May brings highs around 62°F (17°C), lows near 36°F (2°C), about 6 wet days and roughly 2 snowy days.
Ulaanbaatar weather in June
June brings highs around 72°F (22°C), lows near 49°F (9°C), about 9 wet days - typically the sunniest month of the year in Ulaanbaatar.
Ulaanbaatar weather in July
July brings highs around 76°F (25°C), lows near 56°F (13°C), about 12 wet days - typically the hottest month of the year in Ulaanbaatar.
Ulaanbaatar weather in August
August brings highs around 71°F (22°C), lows near 51°F (11°C), about 12 wet days - typically the wettest month of the year in Ulaanbaatar.
Ulaanbaatar weather in September
September brings highs around 61°F (16°C), lows near 40°F (4°C), about 8 wet days and roughly 1 snowy days.
Ulaanbaatar weather in October
October brings highs around 44°F (7°C), lows near 26°F (-4°C), about 4 wet days and roughly 2 snowy days.
Ulaanbaatar weather in November
November brings highs around 25°F (-4°C), lows near 7°F (-14°C), about 4 wet days and roughly 3 snowy days.
Ulaanbaatar weather in December
December brings highs around 11°F (-12°C), lows near -6°F (-21°C), about 1 wet days.
Seasons in Ulaanbaatar
Spring (March through May)
Spring in Ulaanbaatar is chilly, with daytime highs averaging 49°F (10°C) and nights around 26°F (-4°C); rain falls on about 13 days over the three months, plus around 7 snowy days.
Summer (June through August)
Summer in Ulaanbaatar brings comfortable warmth, with daytime highs averaging 73°F (23°C) and nights around 52°F (11°C); expect showers on roughly 33 days across the season.
Fall (September through November)
Fall in Ulaanbaatar is chilly, with daytime highs averaging 43°F (6°C) and nights around 24°F (-4°C); rain falls on about 15 days over the three months, plus around 6 snowy days.
Winter (December through February)
Winter in Ulaanbaatar is bitterly cold, with daytime highs averaging 13°F (-11°C) and nights around -7°F (-22°C); precipitation is infrequent. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Climate questions, answered
What is the average temperature in Ulaanbaatar?
Is Ulaanbaatar hot in summer?
Is Ulaanbaatar cold in winter?
How many rainy days does Ulaanbaatar get in a year?
Best time to visit Ulaanbaatar
The best time to visit Ulaanbaatar is generally May to June and August to September, when this window offers the warmest, brightest days of the year. Daytime temperatures in that window typically sit near 67°F (19°C).
Pack for Ulaanbaatar with a heavy insulated coat, hat and gloves for winter; rain gear if you travel around August. Evenings can feel noticeably cooler than afternoons - July nights average 56°F (13°C).
Ulaanbaatar temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.