Vorarlberg summer 2023 in numbers Vorarlberg

Vorarlberg summer 2023 in numbers Vorarlberg


The summer of 2023 was the seventh hottest since weather records began in Austria 260 years ago. In Vorarlberg, the highest air temperature in all of Austria this summer was measured in Bludenz at 37.7 degrees.

02.09.2023 12.05

Online since today, 12:05 pm

With meteorological summer coming to an end in early September, it’s time to look back at the weather of the past few months. The data shows: The summer of 2023 was warmer than average and is one of the seven hottest summers since systematic weather records began in Austria 260 years ago.

Heat waves and hot days

Despite a temporary cooling around July 20, another heat wave began shortly before mid-August. This lasted an unusually long time, about two weeks, especially in the second half of August. The number of so-called hot days, in which the temperature reached 30 degrees or more, increased significantly again. There have been 20 such days recorded in Bregenz this summer, more than double the average over the past 30 years. The highest temperature of the summer was measured in Bludenz, Vorarlberg, at 37.7 degrees on July 11th.

Extreme air temperature values ​​in the summer of 2023

Weather stationtemperatureDate
Higher air temperatureBludenz (V, 571 m)37.7ºCJuly 11
Lower air temperatureBrunnenkogel (T, 3437 m)-9.1ºCAugust 8
Inhabited place with lower air temperatureSchwarzau/Freiwald (N, 788 m)-1.2ºCJune 13
Lowest air temperature below 1000 mSchwarzau/Freiwald (N, 788 m)-1.2ºCJune 13

Number of hot days (at least 30 °C) in summer

Summer 2023Average 1961-1990Average 1991-2020record
Vienna Hohe Warte3892040 in summer 2015
Vienna city center372544 in summer 2019
Eisenstadt30112038 in the summer of 2015
Saint Polten29111840 in summer 2015
City of Linz3051539 in the summer of 2015
Salzburg airport2561231 in the summer of 1994
University of Innsbruck3592143 in summer 2015
Bregenz2038th29 in summer 2015
University of Graz2041738 in the summer of 2003
Klagenfurt Airport2161837 in the summer of 2003

The sunniest places in summer 2023

Weather stationWeather stationDeviation from the average 1991-2020
Below 1000 m above sea levelPodersdorf (B, 116 m)796 hoursn/a
More than 1000 m above sea levelSulzberg (V, 1014m)705 hoursn/a

Climate change as the cause?

Although there have been hot summers in the past, the current accumulation of hot summers is impressive. Of the 15 hottest summers in the last 260 years, 13 have occurred in the last 30 years. “This is an accumulation of hot summers, it cannot be a coincidence – we can already see that the climate is about to change,” meteorological experts said. However, a single summer does not allow direct conclusions to be drawn about climate change.