SnowOdds

76 winters, day by day

Sahoro, Japan. Every ski winter from 1950/51 to 2025/26.

Painting of Sahoro
Average winter
2.5 m97 in
Snowiest winter
3.8 m149 in
Leanest winter
1.6 m63 in
Powder days a winter
3

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 75% of 736 resorts

+2.5°C+4.6°F

The trend: from -10°C13°F to -8°C18°F. Point at a winter to read it.

-12°10°-10°14°-8°18°-6°21°

Snowfall at the summit

−2%

The trend: from 2.5 m98 in to 2.4 m96 in. Point at a winter to read it.

1.5 m59 in2.0 m79 in2.5 m98 in3.0 m118 in3.5 m138 in4.0 m157 in

Powder days at the summit

±0 days

The trend: from 3 to 3. Point at a winter to read it.

0246

Days with a base at the summit

−13 days

The trend: from 137 to 124. Point at a winter to read it.

100120140160

Days with fresh snow at the summit

±0 days

The trend: from 71 to 71. Point at a winter to read it.

406080100

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−3%

Then

2.6 m101 in

Now

2.5 m97 in

Snowfall in the village−3%

Then

2.6 m101 in

Now

2.5 m98 in

Powder days at the summit±0 days

Then

3

Now

3

Days with a base at the summit−5 days

Then

134

Now

129

Average temperature at the summit+1.4°C+2.5°F

Then

-10°C14°F

Now

-8°C17°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
41 cm16 in
Snowiest winter
3.8 m149 in
Leanest winter
1.6 m63 in
Deepest snow on the ground
178 cm70 in
Coldest night at the summit
-30°C-22°F
Strongest gust at the summit
113 km/h70 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