Switzerland Reports Significant Drop in Summer Storm Activity

MeteoNews records 43% decrease in lightning strikes during summer 2025, marking unusual weather pattern shift

Switzerland experienced a massive 43% decrease in lightning strikes during the summer of 2025 compared to the previous year.
The drop in storm activity is attributed to a particularly stable weather situation throughout the summer.
Despite the quiet summer, the Canton of Bern remained the most active region for lightning strikes.
The most powerful lightning strike of the season occurred on July 3 in the canton of St. Gallen.
Meteorologists confirm this drop is a normal fluctuation and does not indicate a long-term trend.

182,000

Total lightning flashes

320,000

Total lightning flashes (Previous Year)

23,371

Lightning flashes in Bern

21,308

Lightning flashes in Graubünden

"The large fluctuations from one year to the next are normal and no particular trend is emerging."
— MeteoNews

"Last year, more lightning was recorded in a single day than in the entire month of August in 2025."
— MeteoNews

Skies Fall Silent: A Dramatic Plunge in Electrical Activity

Switzerland experienced a massive 43% decrease in lightning strikes during the summer of 2025 compared to the previous year.
The drop in storm activity is attributed to a particularly stable weather situation throughout the summer.
Despite the quiet summer, the Canton of Bern remained the most active region for lightning strikes.
The most powerful lightning strike of the season occurred on July 3 in the canton of St. Gallen.
Meteorologists confirm this drop is a normal fluctuation and does not indicate a long-term trend.