Last updated: August 22, 2025
In December, the average temperature in Hart bei Graz, Austria hovers around 1°C (34°F), making it a chilly time of year. Expect nighttime lows to dip to a brisk -7°C (19°F), while daytime highs can reach a mild 13°C (55°F). With 54 mm (2.1 in) of precipitation spread over 8 days, don't forget your umbrella! The air is quite humid too, with an average of 89%, adding to the cool, crisp atmosphere.
In December in Hart bei Graz, the average temperature is 1°C (34°F). Maximums can reach 13°C (55°F), while minimums can drop as low as -7°C (19°F). Travelers should be prepared for chilly weather and pack accordingly to stay warm and comfortable during their visit.
In Hart bei Graz in December, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.
In Hart bei Graz in December humidity is 89%. With an average temperature of 1°C (34°F), this humidity feels like a chilling dampness that seeps into your bones, making travel uncomfortable and requiring extra layers to combat the cold and moisture.
In Hart bei Graz in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Hart bei Graz.
UV Risk Categories
Weather in Hart bei Graz varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hart bei Graz, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (32°F) | 25 mm (1.0 inches) | 90% | low |
| February Weather | 3°C (37°F) | 38 mm (1.5 inches) | 84% | moderate |
| March Weather | 5°C (42°F) | 38 mm (1.5 inches) | 78% | moderate |
| April Weather | 10°C (51°F) | 57 mm (2.3 inches) | 73% | high |
| May Weather | 14°C (58°F) | 112 mm (4.4 inches) | 71% | very high |
| June Weather | 20°C (68°F) | 77 mm (3.0 inches) | 73% | very high |
| July Weather | 21°C (69°F) | 91 mm (3.6 inches) | 70% | very high |
| August Weather | 21°C (69°F) | 101 mm (4.0 inches) | 60% | very high |
| September Weather | 16°C (60°F) | 102 mm (4.0 inches) | 65% | high |
| October Weather | 11°C (51°F) | 45 mm (1.8 inches) | 84% | moderate |
| November Weather | 5°C (42°F) | 73 mm (2.9 inches) | 89% | moderate |
| December Weather | 1°C (34°F) | 54 mm (2.1 inches) | 89% | low |