An unexpected return of winter landscapes has gripped the Italian mountains, bringing snow to the peaks of the Dolomites and the Val di Luce, including the ski resort of Abetone. The arrival of a cold front and associated perturbations pushed the snow line down to approximately 1,500 meters on Friday, May 15, 2026.
A Sharp Thermal Drop
The passage of the cold front caused a significant temperature plunge, with some areas seeing drops of up to 10 degrees. In Central Italy, maximum temperatures are currently fluctuating between 12 and 15 degrees, which remains well below seasonal averages.
This biting climate is attributed to the polar origin of the air mass combined with persistent rainfall. In other regions, such as the Po Valley, this thermal contrast has already triggered violent thunderstorms and hailstorms.
The Science Behind the “Crazy Weather”
Meteorologists attribute the current conditions to a clash between opposing air masses. A large area of low pressure is driving cold air from the North Atlantic directly into the heart of the Mediterranean.
When this cold air meets the pre-existing milder air, it generates clouds and strong perturbations. While rare compared to trends seen in recent decades, experts note that this event falls within the period’s climatic variability.
Forecast: Transition to Spring
Instability is expected to persist through Saturday, May 16, as a core of cold air remains over the Center-North. This may bring scattered showers and thunderstorms, particularly during the first part of the day, before conditions gradually improve in the late afternoon.
A shift is likely on Sunday, May 17, as pressure increases and the “cyclone” moves east toward Greece and Turkey. Temperatures could recover slightly to between 18 and 19 degrees, though they may remain slightly below average.
Outlook for Next Week
A subtropical anticyclone rising from Spain is expected to bring a leisurely but constant thermal recovery. While slight instability and weak showers may persist in the South and Center-South between Monday, May 18 and Tuesday, May 19, the general trend is positive.
By Wednesday, May 20, and Thursday, May 21, the weather is expected to improve further, despite the possibility of isolated afternoon showers. By Friday, May 22, the anticyclone could expand decisively, potentially pushing maximum temperatures from 22 degrees on Tuesday up to 28 degrees.
While cold mornings and nights may continue for a short period, daytime temperatures are likely to return to a more pleasant, spring-like atmosphere.
Frequently Asked Questions
What caused the sudden snowfall in May?
The snow was caused by a large area of low pressure pushing cold air from the North Atlantic into the Mediterranean, where it clashed with milder air.
Is this weather event completely unprecedented?
No. Experts from LaMMA noted that a similar configuration occurred in May 2018, with heavy rain and snow in the Alps and Apennines.
When will the weather return to normal spring temperatures?
A gradual recovery is expected starting Sunday, May 17, with a more significant rise likely next week as a subtropical anticyclone from Spain moves in, potentially reaching 28 degrees by Friday, May 22.
How has this unusual May weather affected your local area?
