Ulan Bator Climate by Month
Ulan Bator, Ulaanbaatar, Mongolia
Warm summers and bitterly cold winters, with little rain, mostly from June to September.
Ulan Bator has warm summers and bitterly cold winters, with little rain, mostly from June to September. July is the warmest month, with highs around 79°F (26°C); January is the coolest at 3°F (-16°C), and nights dip to -20°F (-29°C). It gets only 8.9 in (225 mm) of rain a year. October to April are almost completely dry.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- -20°F(-29°C)
- Average low, January
- Rain per year
- 8.9 in(225 mm)
- Wettest: August
- Humidity
- 60%
- Sunniest: June
Best and worst months in Ulan Bator
Best for weatherJune and August are the best time for weather in Ulan Bator: highs near 75°F (24°C) and about 2.0 in (52 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 3°F (-16°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Ulan Bator weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 3°F(-16°C) | -20°F(-29°C) | 0.0 in(1 mm) | 98% | 1.7 |
| FebFebruary | 15°F(-10°C) | -12°F(-24°C) | 0.1 in(2 mm) | 62% | 2.8 |
| MarMarch | 34°F(1°C) | 8°F(-13°C) | 0.1 in(2 mm) | 52% | 4.1 |
| AprApril | 51°F(11°C) | 25°F(-4°C) | 0.3 in(7 mm) | 38% | 5.0 |
| MayMay | 65°F(18°C) | 37°F(3°C) | 0.6 in(16 mm) | 39% | 5.9 |
| JunJuneBest | 76°F(25°C) | 50°F(10°C) | 1.7 in(43 mm) | 46% | 6.1 |
| JulJuly | 79°F(26°C) | 55°F(13°C) | 2.1 in(54 mm) | 53% | 5.6 |
| AugAugustBest | 74°F(23°C) | 50°F(10°C) | 2.4 in(60 mm) | 58% | 4.8 |
| SepSeptember | 64°F(18°C) | 36°F(2°C) | 1.1 in(27 mm) | 58% | 4.1 |
| OctOctober | 46°F(8°C) | 20°F(-7°C) | 0.3 in(7 mm) | 64% | 3.0 |
| NovNovember | 23°F(-5°C) | 0°F(-18°C) | 0.2 in(4 mm) | 79% | 1.9 |
| DecDecember | 8°F(-13°C) | -14°F(-26°C) | 0.1 in(2 mm) | 78% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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