Last updated: August 22, 2025
In September, the average temperature in Untertilliach, Austria hovers around 10°C (50°F), with extremes ranging from a chilly -8°C (18°F) to a pleasant 22°C (72°F). You can expect 128 mm (5.1 in) of precipitation over about 15 days, contributing to an average humidity level of 74%—perfect for cozy indoor activities or exploring the vibrant outdoor scenery!
In September in Untertilliach, the average temperature is 10°C (50°F), with maximums reaching up to 22°C (72°F) and minimums dropping as low as -8°C (18°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and light clothing options.
In Untertilliach in September, the total precipitation amount is 128 mm (5.1 in) occurring over the course of 15 days.
In Untertilliach in September humidity is 74%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your clothes, making outdoor exploration uncomfortable and requiring travelers to dress in layers to stay warm while navigating the moist air.
In Untertilliach 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 Untertilliach.
UV Risk Categories
Weather in Untertilliach varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Untertilliach, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 58 mm (2.3 inches) | 91% | low |
| February Weather | -4°C (25°F) | 68 mm (2.7 inches) | 87% | moderate |
| March Weather | -1°C (30°F) | 85 mm (3.4 inches) | 82% | high |
| April Weather | 3°C (37°F) | 105 mm (4.1 inches) | 79% | very high |
| May Weather | 7°C (45°F) | 156 mm (6.1 inches) | 74% | very high |
| June Weather | 13°C (55°F) | 150 mm (5.9 inches) | 75% | very high |
| July Weather | 13°C (56°F) | 168 mm (6.6 inches) | 74% | very high |
| August Weather | 14°C (57°F) | 196 mm (7.7 inches) | 68% | very high |
| September Weather | 10°C (50°F) | 128 mm (5.1 inches) | 74% | high |
| October Weather | 5°C (42°F) | 125 mm (4.9 inches) | 88% | moderate |
| November Weather | 0°C (32°F) | 157 mm (6.2 inches) | 90% | moderate |
| December Weather | -6°C (22°F) | 141 mm (5.6 inches) | 89% | low |