Too dry in general – rain in September could not make up for the shortfall

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The first half of September was summery. The highest point of the month was 29.6 degrees on September 8 in Eisenstadt. However, in the middle of the month it cooled off considerably and the second half brought heavy rains and in some regions the first frost. The last time September was cooler and cloudier than this year was in 2017. “Over the whole year, it is still too dry this year,” emphasizes ZAMG climatologist Alexander Orlik.

The lowest temperature below 1000 meters above sea level was recorded in Seckau in Styria, with minus 2.9 degrees on September 23. “September 2022 is roughly in the middle with place 130 in the 256-year measurement series,” said Orlik. “Over the past few years, from 2018 to 2021, we have consistently experienced Septembers that were among the warmest in the history of measurements. The last time September was cooler than this year was in 2017.”

It was also the cloudiest September since 2017, with 23 percent fewer hours of sunshine across Austria than the long-term average. September brought eight percent more precipitation than the long-term average and is therefore within the range of typical fluctuations. “Over the whole year, it is still too dry this year,” emphasizes Orlik.

Nationally, there is still a shortage of about 15 percent of the precipitation. The Vienna Basin and northern Burgenland are particularly affected by the lack of rain. Since the beginning of the year, there has been 35 to 40 percent less precipitation.

First frost on September 23
The above-average temperature level, which has lasted with only a few interruptions since May 2022, also persisted throughout Austria in the first half of September. After September 15, the weather was much cooler for the time of year and much too cold throughout the second half of the month. The first frost below 800 meters above sea level occurred relatively early in the second half of the year around September 23.

The cooling around the middle of the month was so strong that September as a whole was colder than the long-term average. September 2022 was 0.6 degrees too cold compared to the 1991 to 2020 climate average and the deviation from the 1961 to 1990 average was minus 0.2 degrees. On the mountains the deviations were even greater at minus 1.1 degrees.

In most parts of the country, the average deviations between 1991 and 2020 were between minus 0.5 and minus 1.5 degrees. This includes most of Tyrol, Salzburg, Upper Austria, Lower Austria, Vienna and large parts of Styria. In the Rhine Valley, in parts of Tyrol and in the southern part of Carinthia, in western and eastern Styria, in Burgenland and in the southeastern part of Lower Austria, the temperature anomalies were slightly lower by minus 0.5 to 0.2 degrees Celsius. .

Source: Krone

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