Last updated: June 24, 2025
In August, the average temperature in Vienna, United States hovers around 25°C (77°F). However, temperatures can swing from a cool 14°C (58°F) to a scorching 37°C (100°F). Expect 150 mm (5.9 in) of precipitation spread across 16 days, with an average humidity level of 72%. Whether you're braving the heat or dodging the rain, be prepared for a climate that keeps you on your toes!
In August in Vienna, the average temperature is a comfortable 25°C (77°F). Maximums can reach up to 37°C (100°F) while minimums can drop to a chilly 14°C (58°F). Be sure to pack both light clothing for the heat and a sweater for the cooler evenings if you plan to travel during this time!
In Vienna in August, the precipitation amount is 150 mm (5.9 in) spread over 16 days.
In Vienna in August, humidity is 72%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace that clings to your skin, making outdoor exploration both vibrant and a bit taxing as you sweat slightly more and seek shade often while enjoying the scenery.
In Vienna in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Vienna.
UV Risk Categories
Weather in Vienna varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Vienna, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (37°F) | 60 mm (2.4 inches) | 84% | moderate |
| February Weather | 5°C (41°F) | 98 mm (3.9 inches) | 83% | moderate |
| March Weather | 8°C (46°F) | 84 mm (3.3 inches) | 83% | high |
| April Weather | 13°C (57°F) | 99 mm (3.9 inches) | 81% | very high |
| May Weather | 19°C (66°F) | 132 mm (5.2 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 118 mm (4.7 inches) | 79% | very high |
| July Weather | 27°C (81°F) | 141 mm (5.5 inches) | 74% | very high |
| August Weather | 25°C (77°F) | 150 mm (5.9 inches) | 72% | very high |
| September Weather | 22°C (72°F) | 102 mm (4.0 inches) | 75% | very high |
| October Weather | 16°C (62°F) | 107 mm (4.2 inches) | 81% | high |
| November Weather | 8°C (47°F) | 86 mm (3.4 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 94 mm (3.7 inches) | 84% | moderate |