There is a story the Alps tell about themselves that the statistics no longer support. Switzerland is a winter country, the story goes: snow, lifts, fondue, the season that pays for the year. The Swiss Federal Statistical Office’s 2025 figures say something different, and they have been saying it for a while.
In 2025, Swiss hotels sold 25.2 million overnight stays between May and October, against 18.6 million between November and April. Summer is 35% larger than winter, and both were records.
The record year, in one line
Swiss hotels recorded 43.9 million overnight stays across 2025, up 2.6% (+1.1 million) on 2024 and a new all-time high. Foreign demand reached 22.8 million nights (+3.7%), also an all-time high; domestic demand reached 21.1 million (+1.4%), beating its own 2022 record. Every month of the year grew except February (−2.9%) and November (−0.7%).
The winter that followed, 2025/26, added another 1.1% to reach 18.7 million nights. Growth, but modest growth — and the gap with summer did not close.
What summer actually means in the Alps
Summer alpine demand is not a consolation prize for a bad snow year. It is a structurally different product: hiking and via ferrata, lakes, mountain railways, cycling, and a hotel stock that increasingly stays open year round rather than shuttering in May. The mountain regions have leaned into it deliberately, and the numbers reward them.
For a traveller, the practical consequence is that the “quiet” alpine season no longer exists in the way it once did. A July week in the Bernese Oberland or the Engadin is not a soft-booking window. If anything, the genuinely quiet weeks in Switzerland are now late April, May and November — the shoulders between two busy seasons.
Fuller rooms, not just more of them
Net room occupancy reached 56.8% in 2025, up 1.7 percentage points and above the previous record of 55.2% set in 2019. Ten of the thirteen tourist regions improved. That matters more than the raw night count: it means the growth is being absorbed by existing hotels rather than new capacity, which is exactly the condition under which prices firm up and late availability disappears.
Regionally, the Zurich region (+253,000 nights, +3.5%), Vaud (+170,000, +5.8%) and Graubünden (+153,000, +2.8%) drove the increase. Seven of the thirteen regions posted their strongest numbers in more than thirty years.
What the numbers say
Three things follow, and they are all actionable. First, if your mental model of the Swiss Alps is winter-first, invert it: the larger season is the green one. Second, occupancy at a record means booking lead times matter more than they did five years ago, in both seasons. Third, the softest weeks are now the shoulders, not the summer.
If you are planning around that, our regional pages are the place to start: Canton of Bern for the Jungfrau region, Valais for Zermatt and Verbier, and Grisons for the Engadin and Davos.
Frequently asked questions
Is summer really bigger than winter in the Swiss Alps?
By nights sold in hotels, yes, and not marginally: 25.2 million in summer 2025 against 18.6 million in winter 2024/25. That is a 6.6 million night gap, or 35%. Both figures are records.
When is the quietest time to visit Switzerland?
On the monthly data, the softest periods are the shoulders between the two seasons — roughly late April to May, and November. November was one of only two months to fall in 2025 (−0.7%).
Are Swiss hotels harder to book than they used to be?
Statistically yes. Net room occupancy hit 56.8% in 2025, a record, above even 2019. Growth is being absorbed by existing rooms rather than new ones.
Deciding which Swiss valley suits your trip? Start with our area-by-area guide to Interlaken.
