A cold front will move across Austria on Wednesday, September 9, 2026, ending a period of extreme heat. Temperatures reached 34.3 degrees in on September 4, a record since 1877. Klagenfurt also set a new September high at 31.8 degrees this month.
The current month has averaged four degrees Celsius above the climate norm. Before the front arrives, Monday will see highs of 30 degrees, while Tuesday could reach 33 degrees in the east. The incoming system brings rain, showers, and thunderstorms nationwide.
The shift marks a significant cooling trend for the region. Wednesday highs will drop to between 14 and 24 degrees, though the southeast may stay near 30. By Thursday, September 10, afternoon temperatures are expected to stabilize between 18 and 22 degrees.