SnowOdds

76 winters, day by day

Volcán Osorno, Chile. Every ski winter from 1950 to 2025.

Painting of Volcán Osorno
Average winter
59.303 cm23 in
Snowiest winter
1.6 m65 in
Leanest winter
8 cm3 in
Powder days a winter
1

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
19501960197019801990200020102020
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 to 2025. Blue winters were colder than this resort’s average, red ones warmer.

Average winter temperature at the summit

Faster warming than 3% of 736 resorts

+0.7°C+1.3°F

The trend: from -2°C28°F to -2°C29°F. Point at a winter to read it.

-3°27°-2°28°-1°30°

Snowfall at the summit

−32%

The trend: from 70 cm28 in to 48 cm19 in. Point at a winter to read it.

0 cm0 in50 cm20 in1.0 m39 in1.5 m59 in

Powder days at the summit

±0 days

The trend: from 1 to 0. Point at a winter to read it.

0123

Days with a base at the summit

±0 days

The trend: from 0 to 1. Point at a winter to read it.

05101520

Days with fresh snow at the summit

−5 days

The trend: from 18 to 13. Point at a winter to read it.

010203040

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 1950–1979Now 1996–2025

Snowfall at the summit−26%

Then

71.033 cm28 in

Now

52.367 cm21 in

Snowfall in the village−11%

Then

58.567 cm23 in

Now

52.1 cm21 in

Powder days at the summit±0 days

Then

1

Now

0

Days with a base at the summit±0 days

Then

0

Now

0

Average temperature at the summit+0.5°C+0.9°F

Then

-2°C28°F

Now

-2°C29°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
23 cm9 in
Snowiest winter
1.6 m65 in
Leanest winter
8 cm3 in
Deepest snow on the ground
56 cm22 in
Coldest night at the summit
-14°C6°F
Strongest gust at the summit
131 km/h82 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