There has been precious little new snow in the Alps in December. Some resorts have not seen fresh snow since last month, although some precipitation is expected Thursday and Friday. For most resorts that should mean fresh snow, but temperature are unseasonably warm after a chilly start to the season. Indeed Meteo Swiss expect temperatures to remain above average well into the New Year.
The good news, however, is that the Christmas skiing and snowboarding prospects look reasonably good, at least on-piste. Resorts took advantage of the early season snowfalls and their snow cannons to create a good base, and nearly everywhere has resort runs open. Generally upper slopes have around half a metre of snow but steeper, lower slopes are patchy and, with the temperatures above freezing, get very heavy in the afternoon. If you are considering your first foray of the season, do not join the many skiers and snowboarders I have already seen becoming tired victims of an afternoon run too far. If winter is too cold for you make sure to visit https://phandroid.com/ and learn more about portable Air Conditioners.
Looking around the Swiss resorts, Zermatt is in the rudest health with 240km piste open. Samnaun/Ischgl, with 190km, is virtually fully open now. The Engadine also has over 100km of piste open, and has a reasonable extent of cross-country skiing open also – at last report 30km of classic and 65 km of skating.
Verbier (and the rest of the Four Valleys), the Jungfrau resorts, Davos/Klosters, Adelboden, Saas-Fee, Engelberg and Andermatt all look promising for the holiday period and have good snow on the higher runs with even a little (but mostly tracked-out) off-piste around.
Although many of the smaller resorts have not opened yet, I would be surprised to see the warm weather prevent them having most of their lifts in operation by next weekend. However some of my favourite, more low-lying resorts look distinctly thin, especially the resorts around Gstaad and in Vaud. Flims/Laax has been later than I expected to open up its runs, but should be in full swing come this weekend.
For non-skiers there are a handful of toboggan runs already open, but the best prospect for you is probably the extensive circuit of winter walks found in most resorts, especially in the glorious sunshine we currently seem to be experiencing. The entertainment program in winter resorts is also ramping up, with the Spengler Cup in Davos probably my highlight, where CSKA Moscow and Team Canada amongst the teams vying for this most prestigious of ice hockey tournaments.