Due to its position southeast of the Alps, Graz is shielded from the prevailing westerly winds that bring weather fronts in from the North Atlantic to northwestern and central Europe. The weather in Graz is thus influenced by the Mediterranean, and it has more hours of sunshine per year than Vienna or Salzburg and also less wind or rain. Graz lies in a basin that is only open to the south, causing the climate to be warmer than would be expected at that latitude. Plants are found in Graz that normally grow much further south. However, this milder, less windy climate is detrimental to the air quality in Graz as it makes the city prone to smog in winter. The exhaust fumes of the around 120,000 cars driven into Graz every weekday by people living in the surrounding areas, together with the car journeys made by the inhabitants of Graz itself, are the most significant source of air pollution.
• average temperatures: Graz Airport 8.7 °C (48 °F) / Karl-Franzens University 9.4 °C (49 °F)
• average rainfall: 818 mm with on average 92 days of rain (Karl Franzens University)
• average hours of sunshine: 1,890 (Karl Franzens
