SnowOdds

76 winters, day by day

Les Sybelles, France. Every ski winter from 1950/51 to 2025/26.

Painting of Les Sybelles
Average winter
4.4 m174 in
Snowiest winter
7.3 m286 in
Leanest winter
2.6 m104 in
Powder days a winter
14

Every day of every winter

Each row is a winter, oldest at the top. Each column is a day, from the start of the season to the end. The darker the blue, the more snow fell that day.

Loading the daily snowfall…

Winter total
1950/511960/611970/711980/811990/912000/012010/112020/21
New snow in a day
1 cm0.4 in3 cm1 in7 cm3 in15 cm6 in30 cm12 in50 cm20 in

Climate change

One stripe per winter, 1950/51 to 2025/26. Blue winters were colder than this resort’s average, red ones warmer.

Average winter temperature at the summit

Faster warming than 43% of 736 resorts

+2.0°C+3.6°F

The trend: from -10°C15°F to -8°C18°F. Point at a winter to read it.

-10°14°-8°18°-6°21°

Snowfall at the summit

−8%

The trend: from 4.6 m181 in to 4.2 m167 in. Point at a winter to read it.

4.0 m157 in6.0 m236 in

Powder days at the summit

±0 days

The trend: from 14 to 14. Point at a winter to read it.

102030

Days with a base at the summit

−4 days

The trend: from 163 to 160. Point at a winter to read it.

100120140160180

Days with a base in the village

−5 days

The trend: from 162 to 156. Point at a winter to read it.

100120140160180

Each dot is one winter. The curve is a running average over about ten winters; the dotted line is the straight trend through all of them, and the changes above are measured along it. One winter is weather; the trend is climate.

Then and now

Then 1950/51–1979/80Now 1996/97–2025/26

Snowfall at the summit−7%

Then

4.6 m180 in

Now

4.2 m167 in

Snowfall in the village−20%

Then

2.1 m81 in

Now

1.6 m65 in

Powder days at the summit±0 days

Then

13

Now

13

Days with a base at the summit−2 days

Then

164

Now

162

Days with a base in the village−4 days

Then

163

Now

159

Average temperature at the summit+1.1°C+2.1°F

Then

-9°C16°F

Now

-8°C18°F

Averages per winter over the first and last 30 winters. A powder day brings 10 cm4 in or more of new snow; a base is 30 cm12 in or more on the ground.

Records

Most snow in a day
44 cm17 in
Snowiest winter
7.3 m286 in
Leanest winter
2.6 m104 in
Deepest snow on the ground
315 cm124 in
Coldest night at the summit
-35°C-31°F
Strongest gust at the summit
147 km/h92 mph

All winters

Modelled weather from ERA5 and ERA5-Land, not measured on the slopes. Snow depth is the average over a grid cell about 9 km wide, so it can differ a lot from what the piste report says. How SnowOdds works