Last updated: August 28, 2025
In April, the average temperature in Bayan-Ulaan, Mongolia is a brisk 2°C (35°F), with extremes ranging from a chilly -20°C (-4°F) to a mild 23°C (74°F). Expect approximately 19 mm (0.8 in) of precipitation over the course of 3 days, and enjoy a comfortable average humidity of 69%.
In April in Bayan-Ulaan, the average temperature is 2°C (35°F). Maximums can reach 23°C (74°F) and minimums can be as low as -20°C (-4°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.
In Bayan-Ulaan in April, the precipitation amount averaged 19 mm (0.8 in) over a span of 3 days.
In Bayan-Ulaan in April, humidity is 69%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill in the air, making traveling uncomfortable as the cold penetrates your clothing and the moisture clings to your skin.
In Bayan-Ulaan in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Bayan-Ulaan.
UV Risk Categories
Weather in Bayan-Ulaan varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Bayan-Ulaan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -18°C (0°F) | 3 mm (0.1 inches) | 89% | low |
| February Weather | -15°C (6°F) | 8 mm (0.3 inches) | 81% | moderate |
| March Weather | -6°C (22°F) | 13 mm (0.5 inches) | 72% | high |
| April Weather | 2°C (35°F) | 19 mm (0.8 inches) | 69% | very high |
| May Weather | 8°C (47°F) | 25 mm (1.0 inches) | 54% | very high |
| June Weather | 14°C (57°F) | 40 mm (1.6 inches) | 60% | very high |
| July Weather | 16°C (61°F) | 86 mm (3.4 inches) | 64% | very high |
| August Weather | 13°C (56°F) | 91 mm (3.6 inches) | 65% | very high |
| September Weather | 8°C (47°F) | 32 mm (1.2 inches) | 68% | high |
| October Weather | -1°C (31°F) | 12 mm (0.5 inches) | 68% | moderate |
| November Weather | -9°C (17°F) | 6 mm (0.3 inches) | 75% | moderate |
| December Weather | -16°C (4°F) | 4 mm (0.2 inches) | 89% | low |