April 2025 Records Unprecedented Mild Temperatures Across Austria

April 2025 has emerged as one of the warmest Aprils in Austria's recorded history, according to Geosphere Austria's latest findings. The month experienced only a brief period of cooler temperatures, with most days significantly exceeding the seasonal average. The preliminary evaluation indicates that temperatures in Austria's lowlands were approximately 1.9 degrees Celsius above the average for the climate period from 1991 to 2020, while mountainous regions recorded an increase of about 2.0 degrees.

Notably, the only cooler days occurred between April 6 and 9, when temperatures dipped below the long-term average. During this time, the lowest temperature of the month was recorded at minus 8.2 degrees Celsius in Liebenau, located in Upper Austria. Despite this brief cool spell, the majority of the month saw unseasonably warm weather, with many areas celebrating their first summer day of the year, marked by temperatures reaching at least 25 degrees Celsius. St. Pölten was highlighted as the warmest location, recording a high of 28.3 degrees Celsius on April 16.

The analysis ranks April 2025 as the ninth warmest April in the 259-year history of temperature measurements in the lowlands and the eighth warmest in the 175-year history of mountain recordings. Compared to the climate period from 1961 to 1990, the temperatures in the lowlands were 3.4 degrees Celsius above average, while in the mountains, they were 3.6 degrees above the norm.

In terms of precipitation, most regions in Austria experienced average rainfall levels, with variations ranging from 15 percent below to 15 percent above the historical average. However, significant dryness was reported in Vorarlberg, parts of North Tyrol, and large areas of Salzburg extending into western Upper Austria, where precipitation levels were between 30 and 85 percent lower than average.

Conversely, certain areas, such as parts of East Tyrol and North Burgenland, saw substantial rainfall, exceeding average levels by 15 to 50 percent. Overall, the nationwide analysis indicated a 30 percent decrease in precipitation compared to historical averages, while sunshine duration increased by 7 percent.

Typically, April marks the peak of snow accumulation in the high mountains, a trend that continued this year. However, recorded snow depths were significantly lower than the historical averages.