Missing the Christmas–New Year window can cost a ski resort on the order of 20% of its entire season's revenue, according to industry estimates — because the two weeks around the holidays are the single most valuable stretch of the year, combining peak occupancy, peak lift-ticket pricing, and near-total booking demand. A green or icy resort on 26 December does not recover that money later.
Key takeaways
- The Christmas–New Year period is the highest-revenue window of the ski season; industry estimates put the cost of missing a major early-season opening at roughly 20% of annual revenue.
- The loss is not deferred — it is destroyed. Holiday demand is time-locked to school calendars and does not simply move to March.
- Snowmaking is the insurance policy, but it has a temperature limit: guns need the wet-bulb to cooperate, and warm early-season Decembers are exactly when they struggle most.
- For a large operator, skiing is more than 85% of revenue and around 95% of profit; a late open compounds through lodging, food, retail, and ski school, not just lift tickets.
- The economic case for a marginal-temperature advantage is strongest here: a modelled +3 °C wet-bulb advantage that lets snowmaking start earlier is worth most precisely because it protects the most valuable calendar weeks.
Why is Christmas week so valuable to a ski resort?
Because demand, price, and occupancy all peak at once. The holiday fortnight concentrates families, destination travellers, and premium bookings into a short window when schools are out across Europe and North America simultaneously. Resorts charge their highest lift and lodging rates, fill their beds, and run their ancillary businesses — ski school, rental, food and beverage, retail — at maximum capacity. No other two weeks combine all of those.
That concentration is why a missed holiday opening hurts far more than the same number of quiet mid-week days in a shoulder period. New Year's week in particular is routinely a resort's single highest-revenue week. When the snow is not there, you do not lose a slice of average business; you lose the richest slice, at the highest margin, with no ability to resell those exact dates.
How much does a late opening actually cost?
Industry analysis puts the figure near a fifth of the season. Because skiing dominates a mountain operator's economics — more than 85% of revenue and roughly 95% of profit for major operators — a holiday period that fails to open cascades through every line of the P&L at the moment those lines are fullest.
The mechanism is worth breaking out:
- Lift tickets at peak-season pricing, the most direct loss.
- Lodging at maximum occupancy and rate — often booked months ahead, then cancelled and refunded.
- Ski school and rental, which run at holiday-week capacity and staff up specifically for it.
- Food, beverage, and retail, whose volume tracks skier visits on the hill.
- Brand and repeat-visit damage — a family whose holiday trip is ruined may not rebook next year.
Set that against the cost side. Snowmaking is already about 17% of daily operating cost at large resorts (Vorkauf et al. 2022, International Journal of Biometeorology), and a resort spends heavily trying to build a holiday base in the weeks before Christmas. Missing the opening means the resort has paid the snowmaking bill and lost the revenue it was meant to protect — the worst of both.
| Season window | Relative revenue | Why it matters | |---|---|---| | Pre-Christmas build (late Nov–mid Dec) | Low, high snowmaking spend | The base-building race; costs incurred before revenue arrives | | Christmas–New Year | Highest of the year | Peak price × peak occupancy; ~20% of annual revenue at stake | | January | Moderate | Recovery period; cannot fully replace a lost holiday | | February half-terms | High | Second peak, calendar-locked to school holidays | | March–April | Declining | Discounting begins; lowest yield per visit |
Why can't a resort just make snow to guarantee Christmas?
Because snowmaking is bounded by temperature, and early-season warmth is precisely the problem. Snow guns need the wet-bulb temperature — the combined effect of air temperature and humidity — to fall low enough to freeze atomised water in flight. In a warm, humid early December, the wet-bulb sits in the marginal band where conventional snowmaking is slow, inefficient, or impossible, and the holiday base cannot be built fast enough.
This is the core operational bind: the resort most needs snow when conditions least allow making it. The wet-bulb window and how it governs output is covered in the operator's wet-bulb guide, and the practical question of making snow at marginal temperatures is the exact pain a holiday-opening deadline creates. Climate data sharpens it further: warming is compressing the reliable early-season window, and the risk of a snow-scarce start is rising, as the resort-by-resort modelling in will ski resorts survive climate change sets out (framed as very high risk of scarcity, not certainty of closure).
Which resorts are most exposed to a missed holiday opening?
The lower and warmer ones. A resort's exposure to a snow-scarce Christmas is set mostly by elevation: high, cold terrain can build a holiday base on plain water in almost any December, while low-lying resorts depend on a narrow band of cold nights that warming is steadily eroding. The reliability line — the elevation above which natural snow can be counted on — has been climbing for decades.
The pattern is regional as well as vertical:
- Low-elevation Alpine resorts (roughly below 1,500 m) face the sharpest early-season risk and the largest marginal-hour value from any temperature advantage.
- Warm-maritime and southern ranges — parts of the Pyrenees, the southern Alps, and many North American and Central European hills — sit closer to the wet-bulb margin more often.
- High-altitude, continental resorts are more insulated for now, though even they build their holiday base earlier and with less slack than they once did.
This is why the ~20% figure is not evenly distributed. For a high, cold resort the holiday opening is rarely in doubt; for a low, warm one it is the recurring existential question of the season. The resorts with the most to lose from a missed Christmas are precisely the ones for which a marginal-temperature advantage is worth the most — and, in the chemistry-tolerant markets, the ones where an additive can legally provide it.
Where does chemistry fit into protecting the holiday window?
At the margin, where it is worth the most. A snowmaking additive does not replace cold weather; it extends the usable temperature range at the warm edge. SL6733 is modelled to deliver a +3 °C wet-bulb advantage, translating to an estimated 300–500 extra snowmaking hours per season — and the highest-value place to spend those hours is the pre-Christmas base-building race.
The economics follow directly. If a marginal-temperature advantage converts a handful of unusable early-December nights into snowmaking nights, and those nights are what let a resort open its holiday terrain on time, the value created is not measured against the cost of the additive per litre — it is measured against the ~20% of annual revenue the opening protects. That is the logic behind value-share pricing: the additive is priced against a share of the incremental revenue and margin it defends, not as a chemical sold by the kilogram. The per-day version of this calculation is in what one extra open day is worth, and the season-length mechanics in how snowmaking extends the ski season.
To make the arithmetic concrete — and explicitly as an illustration, not a quote — take a resort that turns over €20 million a season. If the holiday fortnight represents roughly a fifth of that, some €4 million rides on opening the right terrain on time. Against a number of that size, the relevant question is not "what does the additive cost per litre?" but "what share of the €4 million at risk is it reasonable to pay for materially improving the odds of opening?" That inversion is the whole point of value-share pricing, and it only makes sense once the holiday window is understood as the concentrated, non-recoverable asset it is.
Two honest qualifiers belong in the same breath. First, Austria and Bavaria prohibit all snowmaking additives, so the holiday-protection case applies in the chemistry-tolerant markets — France, Italy, Switzerland, and non-Alpine geographies. Second, the +3 °C advantage and the extra-hours figure are modelled outcomes under pre-commercial pilot validation, not guaranteed field results.
The bottom line
The Christmas–New Year window is where a ski resort makes its year, and missing it can cost roughly a fifth of annual revenue that no amount of spring skiing recovers. Snowmaking is the defence, but it runs into the wet-bulb wall exactly when early-season warmth arrives. That is why a marginal-temperature advantage is most valuable not as an average across the season but as insurance on the specific weeks that carry the P&L — and why the right way to price it is against the revenue it protects, not the litres it takes.
If you want to model what protecting your early-season opening is worth against your own revenue calendar, request a pilot or send us a message.
Operator outcomes (+3 °C wet-bulb advantage, 300–500 extra hours) are modelled; SL6733 is in pre-commercial EU pilot phase, targeted for 2026/27 lab pilots and 2027/28 commercial deployment. Revenue-share figures cited are industry estimates. DeepSnow is the platform brand of SnowLabs Limited (Ireland); DeepSnow Srl (Italy) is in formation.