Luxembourg Experiences One of Its Ten Warmest Years on Record in 2025, Meteolux Reports

Annual Temperature and Sunshine Highlights

Luxembourg recorded one of its ten warmest years on record in 2025, according to a report by Meteolux. The country experienced an average annual temperature of 10.5 degrees Celsius, placing it among the warmest years since records began in 1947. This information was shared by Meteolux meteorologist Luca Mathias in an interview. The year also stood out for its increased solar exposure, ranking among the top ten sunniest years with approximately 250 extra hours of sunshine.

These climatic trends are considered by Meteolux to be direct consequences of climate change, a phenomenon increasingly evident over the past two decades.

Varied Precipitation Patterns

While temperatures and sunshine were notably high, 2025 also saw above-average rainfall across Luxembourg. The year was marked by several significant precipitation events:

• January 2025 was the third wettest January since 1947, with 148.1 liters per square meter of rain, exceeding the climatic norm by 106%.
• September 2025 was recorded as the wettest September since 1947 at the Luxembourg-Findel airport, characterized by exceptionally abundant rainfall.
• A particularly intense rainfall event occurred on September 8-9, 2025, when 123 liters per square meter fell in just 12 hours at Findel, nearly double the typical monthly amount.

Seasonal Climate Overview

The seasons of 2025 presented a mixed picture of climatic conditions:

• The winter of 2024/2025 was described as mild, slightly too humid, and lacking in sunshine.
• March 2025 broke records, becoming the sunniest March since 1947, with 222.8 sunshine hours.
• The spring of 2025 (March to May) was notably warmer, drier, and sunnier than average, with an average temperature of 10.6°C.

Despite 2025 being one of the warmest, the absolute record for the warmest year in Luxembourg remains 2020, which registered an average temperature of 11.3 °C.