Ask three serious forecasters about the coming winter and you will get three different answers. Not reassuring — but that is the interesting part, and it changes how you should plan your season.
Three readings of the same signal
In its 29 October bulletin, Météo-France favours a November-January quarter warmer than normal, with a stated probability of 70%, and wetter than normal across the northern half of the country. Severe Weather Europe expects the polar vortex to restabilise until the end of December. La Chaîne Météo keeps its mild scenario while insisting that a milder season never excludes sharp cold spells.
And yet it has already snowed twice
Overnight on 8-9 October, Val Thorens woke under about twenty centimetres, with continuous snow from 2,200 metres. From 20 October, Tignes recorded 17 cm at 2,560 metres and Val Thorens 14 cm at 2,277 metres.
Then the polar vortex got involved
European Centre models flagged a high probability of a sudden stratospheric warming between 4 and 6 November, with the vortex starting to collapse as early as 31 October — a phenomenon that usually strikes in January or February. Surface effects take about two weeks, so the risk of polar air outbreaks rises from the second half of November. A risk, not a certainty. More at Futura Sciences.
But a mild winter remains the most likely outcome
El Niño sits in the background: the Niño 3.4 index reached +2.84 °C in September, the highest monthly value since 1982. A mild, unsettled winter is not a dry one, though: plenty of precipitation with a higher rain-snow line favours altitude. And the warmest winter ever measured in France, 2019-2020, arrived with a Niño 3.4 index of just +0.7 °C. Full analysis at Météo-Paris.
What climate disruption really changes
What warming disrupts is not only the average temperature but the regularity. Seasons are becoming more volatile, with short, sharp episodes replacing long stable periods. A mild winter can contain three excellent weeks; a cold one can string together thaws. The seasonal average is becoming a poor guide to when you should go skiing.
Our advice, and why we have an interest in giving it
Booking a full week eight months ahead means betting on seven specific days in an unpredictable season. The alternative is to stay flexible, watch one- to two-week forecasts rather than three-month trends, and go when conditions are there.
That is, of course, what Passe Montagne makes possible, and we are not going to pretend otherwise. The reasoning holds independently of us: when good-condition windows get shorter and move around, flexibility becomes an advantage. Our membership gives reduced rates at more than 150 resorts, with no commitment to a single area or to fixed dates.
Photo : Olga Gavrilova / Adobe Stock
