Last updated: August 28, 2025
In September, the average temperature in Altan-Ovoo, Mongolia hovers around 10°C (51°F), with a potential minimum of -7°C (19°F) and a maximum reaching up to 30°C (86°F). Expect about 39 mm (1.5 in) of precipitation over 6 days, coupled with an average humidity of 68%. Prepare for a mix of weather as you explore this vibrant locale!
In September in Altan-Ovoo, the average temperature is 10°C (51°F). The maximum can reach 30°C (86°F), and the minimum can be as low as -7°C (19°F). Therefore, travelers should prepare for a wide range of temperatures and pack accordingly.
In Altan-Ovoo in September, the precipitation amount is 39 mm (1.5 in), occurring over the course of 6 days.
In Altan-Ovoo in September, humidity is 68%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making outdoor activities slightly uncomfortable yet invigorating, as the cool air bites against your skin, creating an atmosphere that is refreshing but requires appropriate clothing for a pleasant travel experience.
In Altan-Ovoo 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 Altan-Ovoo.
UV Risk Categories
Weather in Altan-Ovoo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Altan-Ovoo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -18°C (0°F) | 4 mm (0.1 inches) | 89% | low |
| February Weather | -14°C (7°F) | 8 mm (0.3 inches) | 81% | moderate |
| March Weather | -4°C (25°F) | 11 mm (0.4 inches) | 72% | moderate |
| April Weather | 4°C (39°F) | 22 mm (0.9 inches) | 69% | high |
| May Weather | 11°C (51°F) | 31 mm (1.2 inches) | 54% | very high |
| June Weather | 16°C (62°F) | 55 mm (2.2 inches) | 60% | very high |
| July Weather | 18°C (64°F) | 96 mm (3.8 inches) | 64% | very high |
| August Weather | 15°C (60°F) | 87 mm (3.4 inches) | 65% | very high |
| September Weather | 10°C (51°F) | 39 mm (1.5 inches) | 68% | high |
| October Weather | 1°C (33°F) | 18 mm (0.7 inches) | 68% | high |
| November Weather | -8°C (18°F) | 10 mm (0.4 inches) | 75% | low |
| December Weather | -15°C (5°F) | 4 mm (0.2 inches) | 89% | low |