Arosa snow history

10 years of snow depth, snowfall and conditions at Graubünden, Switzerland · 1,800m to 2,653m

Over the last 10 seasons Arosa, Switzerland has averaged 389cm of snowfall, a peak snow depth of 151cm, 3 powder days and 18 bluebird days a year, with skiable cover from around 1 December to 22 May.

Snow history & climate

10-year averages for Arosa

389 cm
Snowfall / season
Nov-May total
151 cm
Peak depth
typical season high
3
Powder days
15cm+ in a day
18
Bluebird days
sun after snow
17
Rain days
1mm+ of rain
177
Skiable days
30cm+ cover

Month by month

Monthly averages

Average snowfall, snow depth, rain, sunshine and day counts by month at Arosa, over the last 10 seasons.
MonthSnowfallAvg depthRainSun/dayTempPowderBluebirdRain days
Jan57 cm99 cm1mm6.2 h-5° / -14°0.62.10.2
Feb45 cm116 cm1mm7.3 h-2° / -11°0.32.00.3
Mar57 cm124 cm1mm8.6 h0° / -9°0.32.70.0
Apr53 cm113 cm7mm10.3 h3° / -6°0.33.42.8
May56 cm64 cm53mm10.4 h7° / -2°0.43.512.5
Jun7 cm10 cm101mm12.3 h14° / 4°0.00.417.0
Jul1 cm0 cm120mm12.7 h15° / 5°0.00.018.6
Aug4 cm0 cm141mm11.1 h15° / 6°0.00.216.6
Sept24 cm2 cm67mm9.6 h11° / 1°0.40.911.1
Oct40 cm4 cm59mm7.7 h7° / -2°0.51.37.1
Nov57 cm29 cm5mm6.2 h0° / -9°0.72.91.5
Dec65 cm70 cm1mm5.5 h-3° / -12°0.81.50.1

Averages across the last 10 seasons. Powder, bluebird and rain columns are the average number of such days per month.

Season by season

SeasonSnowfallPeak depthPowder daysBluebird daysSkiable days
2025/26leanest240 cm133 cm011145
2024/25273 cm106 cm29150
2023/24best593 cm202 cm822211
2022/23342 cm127 cm218179
2021/22334 cm144 cm317191
2020/21429 cm156 cm321178
2019/20368 cm172 cm320193
2018/19525 cm169 cm622187
2017/18447 cm196 cm514189
2016/17342 cm106 cm227151
How these numbers are calculated
  • Powder day — at least 15cm of new snow in 24 hours.
  • Bluebird day — sunshine for at least 60% of daylight, following at least 10cm of snow over the previous 3 days.
  • Rain day — at least 1mm of rain (not snow) at this elevation.
  • Skiable day — at least 30cm of settled snow on the ground.
  • Snow depth is modelled from Open-Meteo / ERA5 reanalysis at 2227m, not measured at the resort. Use it to compare seasons and resorts; use the resort's own report for today's conditions.

How Arosa compares

Measured against 40 other resorts across 18 countries, each analysed exactly the same way. The line down the middle of each bar is the median.

Snowfall per season
well above average
389 cm
Ahead of 80% of resortsMedian 283 cm

Total new snow between November and May.

Peak snow depth
well above average
151 cm
Ahead of 85% of resortsMedian 84 cm

How deep the settled base gets at its yearly high.

Powder days
above average
3
Ahead of 60% of resortsMedian 2

Days with 15cm or more of new snow.

Bluebird days
well above average
18
Ahead of 83% of resortsMedian 10

Sun and fresh snow on the same day.

Rain days
well below average
17
Drier than 80% of resortsMedian 32

Days with 1mm or more of rain, not snow.

Skiable days
well above average
177
Ahead of 85% of resortsMedian 115

Days holding 30cm or more of settled snow.

The season at Arosa

Typical stretch holding 30cm or more of settled snow, averaged over the record.

SeptOctNovDecJanFebMarAprMayJunJulAug
Cover arrives
1 December
Season ends
22 May
Days of cover
174 days

When to go

These rarely land in the same month, so it is worth deciding which one matters most before you book.

Deepest base
March
124cm average depth
Most new snow
December
65cm and 0.8 powder days
Best bluebird odds
May
3.5 bluebird days, 10.4h sun a day
Wettest month
May
12.5 rain days

Is Arosa a good place to ski or board?

heavy snowfalla deep, reliable baseplenty of bluebird daysvery little raina long season

On 10 years of record, Arosa stands out for heavy snowfall, a deep, reliable base, plenty of bluebird days, very little rain and a long season.

Figures are modelled at 2227m from reanalysis data and describe an average year, not a forecast.

Arosa snow record in detail

How much snow does Arosa get?

Arosa averages 389cm of snowfall over a full season, measured from November to May across the last 10 winters. That is well above average: more snow than 80% of 40 resorts we have analysed the same way, where the median season brings 283cm.

Season to season the spread is wide. The best of the last 10 winters was 2023/24 with 593cm, and the leanest was 2025/26 with 240cm — a difference of 353cm between a good year and a poor one. The most recent complete season, 2025/26, delivered 240cm.

December is reliably the snowiest month, averaging 65cm and 11 days with fresh snow.

How deep does the snow get at Arosa?

Snowfall totals flatter resorts that lose their snow quickly, so the more useful number is how deep the settled base actually gets. At Arosa the snowpack peaks at an average of 151cm each season. That is well above average, deeper than 85% of 40 resorts we have analysed the same way, against a median peak of 84cm.

The base is deepest in March, averaging 124cm through the month and topping out around 143cm in a typical year.

How many powder days does Arosa get?

Counting any day that delivers at least 15cm of new snow, Arosa averages 3 powder days a season. That is above average, more powder days than 60% of 40 resorts we have analysed the same way, where the median is 2 a season.

December has the most, 0.8 on average.

How often does Arosa get bluebird days?

Arosa averages 18 bluebird days a season — days of sunshine for at least 60% of daylight after 10cm or more of fresh snow. That is well above average, more than 83% of 40 resorts we have analysed the same way, against a median of 10.

May is the best month for it, averaging 3.5 bluebird days and 10.4 hours of sunshine a day.

Does it rain at Arosa?

At mid-mountain Arosa sees an average of 17 days a season with 1mm or more of rain rather than snow. That is well below average: 20% of the 40 other resorts we have analysed the same way see fewer wet days, against a median of 32.

May is the wettest month of the season, with 12.5 rain days and 53mm on average.

When is the best time to ski or board Arosa, and when does the season end?

Arosa typically holds at least 30cm of settled snow from around 1 December through to 22 May, which works out at roughly 174 days of skiable cover in an average year. 177 of those fall inside the November to May season. On season length that is well above average compared with the 40 other resorts we have analysed the same way.

For the deepest base, go in March; for the most new snow, December; for fresh snow with sunshine, May.

Comparisons use 40 resorts across 18 countries, each measured over 5 recent seasons at mid-mountain height. Glaciated locations, where the model never melts the snow out, are excluded. Figures for Arosa are taken at 2227m. Corpus last rebuilt 2 September 2026.

Arosa month by month

What to expect in each month of the season, from the same ten-year record. Figures are averages for mid-mountain; a good or poor winter can move them a long way.

Arosa in November

Early and thin

November is the start of the season at Arosa: the base averages 29cm, which is skiable in a good year but patchy in a poor one. It is the second-snowiest month of the season, with 57cm of new snow on average, 10 snow days and 0.7 powder days. Average highs are 0°C and lows -9°C, with 6.2 hours of sunshine a day and 2.9 bluebird days. Expect the odd wet day — 1.5 on average at mid-mountain.

Arosa in December

Base building

December is when the base starts to build, averaging 70cm and deepening towards its March peak. It is the snowiest month of the season, with 65cm of new snow on average, 11 snow days and 0.8 powder days. Average highs are -3°C and lows -12°C, with 5.5 hours of sunshine a day and 1.5 bluebird days. Rain is rare: under two days in a typical December.

Arosa in January

Base building

Through January the base keeps building, to an average of 99cm. It is the third-snowiest month of the season, with 57cm of new snow on average, 11 snow days and 0.6 powder days. Average highs are -5°C and lows -14°C, with 6.2 hours of sunshine a day and 2.1 bluebird days.

Arosa in February

Base building

By February the base is close to its March peak, averaging 116cm. It brings 45cm of new snow in an average year, with 9 snow days and 0.3 powder days. Average highs are -2°C and lows -11°C, with 7.3 hours of sunshine a day and 2 bluebird days.

Arosa in March

Best all round

March is when the base at Arosa is at its deepest, averaging 124cm through the month and peaking around 143cm in a typical year. It brings 57cm of new snow in an average year, with 12 snow days and 0.3 powder days. Average highs are 0°C and lows -9°C, with 8.6 hours of sunshine a day and 2.7 bluebird days. Taking cover, fresh snow, sunshine and rain together, it is the best all-round month at Arosa.

Arosa in April

Still deep

April still has a deep base, averaging 113cm — only a little down on the March peak. It brings 53cm of new snow in an average year, with 9 snow days and 0.3 powder days. Average highs are 3°C and lows -6°C, with 10.3 hours of sunshine a day and 3.4 bluebird days. Expect the odd wet day — 2.8 on average at mid-mountain.

Arosa in May

Late season

In May the base averages 64cm, past its March peak of 124cm and thinning. It brings 56cm of new snow in an average year, with 11 snow days and 0.4 powder days. Average highs are 7°C and lows -2°C, with 10.4 hours of sunshine a day and 3.5 bluebird days, the most of any month. Rain is a real risk: 12.5 days with rain rather than snow at mid-mountain in an average May.

How Arosa compares with nearby resorts

Of Arosa and the 4 nearest resorts with a ten-year record, Arosa ranks 4 of 5 for snowfall, with 389cm a season. Davos, Klosters and Flims get more; Lenzerheide gets less.

Flims has the most powder days (7 a season, against 3 here); Flims builds the deepest base (198cm against 151cm); and Klosters gets the most bluebird days (24 a season).

Each resort is measured at its own mid-mountain height, so part of any difference is altitude: a resort modelled 500m higher will usually hold more snow. The table shows the height each figure comes from.

Ten-year snow averages for Arosa and the nearest resorts with a record
ResortDistanceMeasured atSnowfallPeak basePowder daysBluebird days
Arosa—2227m389cm151cm318
Lenzerheide12 km2183m368cm144cm417
Davos13 km2202m467cm169cm523
Klosters20 km2006m505cm188cm524
Flims30 km2059m542cm198cm720

Distances are straight-line. Season averages, November to May, over the last ten winters.

More on Arosa

Ski resorts near Arosa

Distances are straight-line, not by road.