Status: 16.01.2024, 15:00 PM
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There was a lot of sun, but also rain on the Hoher Peißenberg last year. © Gronau
2023 was the second warmest year since weather records began on the Hoher Peißenberg in 1781 with an annual mean temperature of 9.2 degrees Celsius - only narrowly beaten by 2022 with 9.3 degrees. The third warmest year was also not long ago, it was 2020 (9.0 degrees).
Hohenpeißenberg –. Last year, only one month, April, was too cold (by 0.6 degrees). Of the eleven other months, which were above the long-term average in comparison, three were over four degrees too warm (June, September, October). The highest annual temperature of 33.6 degrees Celsius was recorded on July 11. The coldest day was minus 9.4 degrees Celsius on 8 February.
34 summer days
There were 34 summer days (maxima above 25 degrees Celsius) and five hot days (over 30 degrees). In 2023, 1350 liters per square meter of precipitation fell - an annual increase of twelve percent. This means that the soils are abundantly filled with water – a mortgage for perhaps too dry spring months.
In 2023, warm and humid conditions prevailed instead of drought and heat as in previous years. The only month that was far too dry was June (37 litres per square metre, or 22 percent). November was extremely wet (310 percent), December very wet (206 percent). Hail was observed on three days of the year, sleet on six days. Frost occurred on 86 days. 27 days were ice days (maxima below 0 degrees Celsius). Thunderstorms were observed on 39 days. In 2023, the sun shone for 1979 hours. This was nine percent above the "plan". February (133 percent), June (163 percent) and September (146 percent) were particularly sunny months. There were 88 days of snowfall, with the highest of 60 centimetres on 2 December. The highest wind peak was 11 km/h on 133 July.
Overall, 2023 saw one extreme after the next: - An extremely mild start to the year on January 1 with a daily mean temperature of 12.5 degrees Celsius, which corresponded to the long-term monthly mean temperature of a June month (12.7 degrees). At 2.18 degrees, January 1 was not only the warmest January 2 in the history of our measurements, but it was also the highest temperature maximum ever in a January month
- June was the fifth-warmest month since records began in 1781 (monthly average 17.0 degrees Celsius)
- June was the driest month since this series of measurements began in 1879 (37 liters per square meter – 22 percent)
- June was the sunniest month since this series of measurements began in 1937 (325 hours – 163 percent)
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- The 33.6 degrees on July 11 was the second warmest temperature since 1781 (warmest so far 33.8 degrees on July 29, 1947)
- September was the warmest since records began in 1781 (monthly averages 16.6 degrees Celsius and 4.6 degrees too warm)
- September was the second sunniest since the beginning of this series of measurements in 1937 (261 hours – 146 percent)
- October was the third warmest since records began in 1781 (monthly averages 12.4 degrees Celsius and 4.4 degrees too warm)
- November was the wettest since the beginning of the measurement series in 1879 (224 liters per square meter and 310 percent).
With such a long series of measurements, records are particularly important and are an indicator of climate change. For example, the winter of 22/23 was already the tenth winter in a row that was too warm, and the summer was even the 27th in a row that was too warm (17.5 degrees Celsius, 3.4 degrees too warm). Finally, the autumn was the second warmest since the beginning of the measurement series in 1781 (the warmest was in 2006).
Siegmar Lorenz, weather observer at theobservatory on the Hoher Peißenberg