Saarland: Record rain in September – it has been this wet since 1881!

Saarland: Record rain in September – it has been this wet since 1881!

Autumn is here and with it comes exciting weather phenomena that have kept us busy in the last few weeks. The weather situation in Germany was particularly varied in September 2025. While the north and east of the country were characterized by mild temperatures and sunny days, the southwest experienced a real marathon of rain. Loud uwr.de This month was the wettest September since records began in Saarland in 1881.

The average temperature this month was 14.5 degrees, which is 0.7 degrees above the reference value for the years 1991 to 2020 and even 1.2 degrees above the climate average from 1961 to 1990. A highlight of September was September 20th, when temperatures of up to 32.6 degrees were measured in Huy-Pabstorf. However, these warm days quickly became a thing of the past as the last days of the month brought cooler air and some regions recorded their first frost.

Floods and storms

The amount of rain was considerable: the area average was 30% more precipitation than usual. The Black Forest region in particular couldn't avoid getting its feet wet - at certain stations over 200 liters of rain fell per square meter. The extreme rainfall event on September 8th caused great excitement: 119 liters per square meter were measured in Mönchengladbach-Hilderath and even 134 liters per square meter in Bedburg. This led to flooding, especially in North Rhine-Westphalia.

The storm events did the rest: Storm Zack brought hurricane-like gusts - 111 km/h were measured in Hallig Hooge, 108 km/h in Büsum and even 143 km/h on the Brocken. These severe weather conditions in the middle of the month added to the challenges for residents.

A look back at the weather data

Thanks to modern technology, we can understand and analyze such weather data. On portals like wetteronline.de Look-back charts are available that allow you to study historical weather conditions worldwide. This platform provides data from thousands of weather stations and includes an impressive series of measurements documenting conditions over the last 52 weeks.

The diverse weather conditions are not just a phenomenon of individual months. Climate change, the causes of which lie in human activities such as industry, transport and agriculture, has long-term effects on our weather behavior. According to the DWD, the temperature in Germany has increased by 1.6°C since 1881, and the figures show that the number of hot days has increased dramatically since the 1950s. Looking at climate projections through the end of this century, experts expect temperatures to rise by 3.1 to 4.7 °C compared to 1971 to 2000, underscoring the need for measures to reduce greenhouse gases.

These developments and the recent September 2025 open our eyes to the changes our climate is experiencing. It will be interesting to see what other weather surprises autumn has in store.