France Experiences Cold Snap but No Official Cold Wave Declared

On December 30, 2025, mainland France is enduring a notable drop in temperatures with extensive frost and chilling winds across the country. Temperatures are running 3 to 5 degrees below seasonal averages, generally hovering around 2°C. However, meteorologists clarify that these conditions do not meet the criteria for a "cold wave."

According to RTL, the definition of a cold wave in France is stringent; it requires the national thermal indicator—which averages temperatures from 30 cities—to fall below -2°C at least once and remain below 0.9°C for more than two days. Currently, the indicator remains around 2°C, indicating that although the weather is cold, it does not reach the threshold to classify as a cold wave. This cold spell is expected to continue until at least the weekend but is not forecasted to intensify.

The rarity of cold waves in France is increasing, with 80% of the 46 recorded events since 1947 occurring before the year 2000. The last cold wave was recorded in February 2018 and lasted only three days. This analysis underscores that while the current temperatures are colder than usual, the nation is not officially experiencing a cold wave by meteorological standards.