Zermatt CH
80% of simulated seasons land between 138" and 272". Reseeded daily as ENSO observations, CPC outlooks, and SEAS5 runs update.
10,000 simulated 2026-27 seasonsENSO-weighted resampling of 36 real seasons (1990–2026) at Zermatt, tilted by the live seasonal outlook
Highlighted bars span the middle half of outcomes (P25–P75). The yellow dashed line is a typical season — the median of the last 36 at this mountain.
What's driving this forecast
The 2026-27 season is simulated by resampling Zermatt's historical seasons weighted toward El Niño analog years. NOAA CPC El Niño Advisory (June 11, 2026): El Niño conditions are present and expected to strengthen into winter 2026-27, with a 63% chance of a very strong event (Niño3.4 ≥ +2.0°C) during Nov-Jan. CPC DJF strength odds: very strong 46%, strong 33%, moderate 16%. IRI (June 22) concurs at 98% El Niño for DJF.
The 51-member SEAS5 seasonal forecast puts Nov–Jan snowfall at this grid point at 87% of its ERA5 normal (ensemble mean 92", spread 61–116"). Applied as a -3% tilt — experimental, heavily shrunk and clamped because seasonal models and reanalysis have different biases.
Day-to-day weather models have no skill this far out, so the near-term forecast contributes 0% weight today. The simulation leans entirely on ENSO-conditioned climatology — exactly what an honest seasonal outlook should do in summer. Weighting shifts toward live forecasts as opening day approaches.
The regional readAlps · from the 2026-27 outlook
The honest call for the Alps is that El Niño barely reaches them — ENSO explains little Alpine snowfall variance, and the season will be decided by the North Atlantic Oscillation, which no model reliably predicts months ahead. The nearest strong-Niño analogs cut both ways: December 2015 was record-warm and green across the northern Alps, while 2023-24 ran warm but storm-rich, burying high-altitude terrain as valley floors turned to rain. Treat 2026-27 as climatological odds with a modest warm-wet tilt: rain-line risk below ~1,500 m, decent totals up high, heightened chance of a slow December. Bet altitude, not region.
Month by monthENSO-conditioned analog medians vs a typical month — when this season should deliver
Prime window: Nov–Dec — the deepest contiguous stretch of the conditioned season. Aim the trip there.
The analog poolEvery season since 1990 at Zermatt (ERA5, calibrated to the resort's reported average), colored by ENSO phase
Pass math for Zermatt
Verdicts run the full simulated snow distribution through breakeven math at ~$127/day window prices. Add trip legs on the home page to compare passes across your whole season.
- Covers Zermatt (5d).
- Snow-adjusted across the simulated seasons, expect ~10.0 covered days; the pass beats window tickets in 0% of 10,000 simulated seasons (mean shortfall $384).
- At this plan, window tickets or a cheaper product wins.
- Covers Zermatt (7d).
- Snow-adjusted across the simulated seasons, expect ~10.0 covered days; the pass beats window tickets in 0% of 10,000 simulated seasons (mean shortfall $560).
- At this plan, window tickets or a cheaper product wins.
Sources: ERA5 reanalysis & multi-model forecasts via Open-Meteo · NOAA CPC ONI, ENSO advisory & seasonal outlook · ECMWF SEAS5 · pass prices verified July 2026. See methodology for the honest fine print.