June 2025 has been exceptionally warm, markedly dry and intensely sunny across Germany. Preliminary evaluations from the German Meteorological Service (DWD), based on data from approximately 2,000 measurement stations, reveal that every June has been warmer than average since 2010.
The average temperature for June reached 18.5 degrees Celsius (°C), exceeding the internationally recognized reference period of 1961 to 1990 (15.4 °C) by 3.1 degrees. Even when compared to the more recent and warmer reference period of 1991 to 2020 (16.4 °C), a significant excess of 2.1 degrees was recorded. The southwestern region of the country emerged as a particular heat hotspot, repeatedly influenced by warm air masses originating from the south and southwest, with temperature increases exceeding 4 degrees above the long-term average in some areas. Along the Upper Rhine, over ten days saw temperatures surpassing 30°C.
Rainfall remained significantly below average, with just 61 liters per square meter recorded. This marks the fifth consecutive month with less precipitation than the climatic average, following February. Compared to the reference period of 1961 to 1990 (85 l/m²), the deficit was nearly a third. When compared to the more recent reference period of 1991 to 2020 (76 l/m²), the target was missed by approximately one-fifth.
Analysis of the first six months of 2025 further underscores the prevailing dryness. From January to June, Germany received approximately 260 liters per square meter, considerably less than the long-term average of around 380 liters per square meter (reference period 1961 to 1990) or 366 liters per square meter (comparison period 1991 to 2020). The eastern central and eastern regions experienced the most substantial rainfall deficits, with some areas receiving as little as 10 to 25 liters per square meter. However, localized intense thunderstorms did occur, notably in Aue (Saxony) on June 15th, where a daily record of 96 liters per square meter was observed. Precipitation was more substantial in the southern regions, with the Black Forest, Bavarian Forest and Alpine foothills receiving between 100 and 150 liters per square meter and locally up to 180 liters.
June also brought extended periods of sunshine, with approximately 277 hours recorded – exceeding the historical average (203 hours) by more than a third (period 1961 to 1990). Compared to the reference period of 1991 to 2020 (216 hours), a positive deviation of 28 percent was observed. The middle two weeks of June were particularly sunny, contributing over 120 hours of sunshine. On several days, the maximum astronomically possible duration of sunshine, approximately 16 hours, was reached. The southwest experienced the most sunshine, totaling nearly 300 hours.