Last updated: August 28, 2025
In September, the average temperature in Ulaanhudag, Mongolia hovers around 11°C (53°F). Expect a range where the minimum dips to -6°C (22°F) and the maximum can soar up to 30°C (87°F). The month sees a total precipitation of 44 mm (1.7 in) spread over about 7 days, coupled with an average humidity of 65%. Whether you're preparing for chilly mornings or warm afternoons, be ready for a variety of weather conditions!
In September in Ulaanhudag, the average temperature is 11°C (53°F). Maximums can reach 30°C (87°F), while minimums can drop as low as -6°C (22°F). This diverse temperature range makes Ulaanhudag an interesting destination for travelers who enjoy both mild and extreme weather conditions.
In Ulaanhudag in September, the precipitation amount is 44 mm (1.7 in) spread over a duration of 7 days.
In Ulaanhudag in September humidity is 65%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that can make outdoor activities somewhat uncomfortable, so travelers should be prepared with light layers and possibly a waterproof jacket to stay cozy while exploring.
In Ulaanhudag in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Ulaanhudag.
UV Risk Categories
Weather in Ulaanhudag varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ulaanhudag, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -18°C (1°F) | 2 mm (0.1 inches) | 89% | low |
| February Weather | -14°C (7°F) | 5 mm (0.2 inches) | 78% | moderate |
| March Weather | -4°C (25°F) | 6 mm (0.2 inches) | 66% | moderate |
| April Weather | 4°C (40°F) | 19 mm (0.7 inches) | 64% | high |
| May Weather | 11°C (53°F) | 22 mm (0.9 inches) | 52% | very high |
| June Weather | 18°C (64°F) | 40 mm (1.6 inches) | 59% | very high |
| July Weather | 20°C (68°F) | 59 mm (2.3 inches) | 63% | very high |
| August Weather | 17°C (62°F) | 82 mm (3.2 inches) | 62% | very high |
| September Weather | 11°C (53°F) | 44 mm (1.7 inches) | 65% | high |
| October Weather | 2°C (35°F) | 15 mm (0.6 inches) | 65% | moderate |
| November Weather | -8°C (18°F) | 11 mm (0.4 inches) | 69% | moderate |
| December Weather | -16°C (3°F) | 3 mm (0.1 inches) | 86% | low |