76 winters, day by day
Ryuoo Ski Park, Japan. Every ski winter from 1950/51 to 2025/26.
Ryuoo Ski Park, Japan. Every ski winter from 1950/51 to 2025/26.
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…
Climate change
Average winter temperature at the summit
Faster warming than 30% of 736 resorts
+1.9°C+3.3°F
The trend: from -7°C20°F to -5°C23°F. Point at a winter to read it.
Snowfall at the summit
+2%
The trend: from 2.8 m111 in to 2.9 m113 in. Point at a winter to read it.
Powder days at the summit
+1 day
The trend: from 2 to 3. Point at a winter to read it.
Days with a base at the summit
−16 days
The trend: from 135 to 119. Point at a winter to read it.
Days with a base in the village
−11 days
The trend: from 104 to 93. Point at a winter to read it.
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+4%
Then
2.8 m110 in
Now
2.9 m114 in
- Snowfall in the village+4%
Then
2.8 m110 in
Now
2.9 m114 in
- Powder days at the summit+1 day
Then
2
Now
3
- Days with a base at the summit−9 days
Then
130
Now
121
- Days with a base in the village−5 days
Then
100
Now
95
- Average temperature at the summit+1.1°C+2.1°F
Then
-6°C20°F
Now
-5°C22°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
All winters
- 1950s1950/513.0 m119 in1951/523.7 m144 in1952/533.2 m124 in1953/542.4 m94 in1954/553.3 m130 in1955/563.6 m143 in1956/573.0 m119 in1957/582.2 m87 in1958/592.1 m81 in1959/602.6 m102 in
- 1960s1960/612.4 m93 in1961/622.3 m92 in1962/632.3 m90 in1963/642.7 m106 in1964/652.8 m111 in1965/663.1 m120 in1966/672.9 m115 in1967/682.6 m101 in1968/692.8 m111 in1969/702.6 m100 in
- 1970s1970/712.8 m109 in1971/722.8 m112 in1972/732.8 m111 in1973/743.3 m129 in1974/753.1 m122 in1975/762.5 m98 in1976/772.7 m107 in1977/783.3 m128 in1978/792.1 m84 in1979/802.7 m107 in
- 1980s1980/813.2 m126 in1981/822.8 m110 in1982/832.8 m109 in1983/843.5 m137 in1984/852.8 m111 in1985/863.1 m121 in1986/872.8 m109 in1987/882.7 m106 in1988/892.5 m100 in1989/902.2 m85 in
- 1990s1990/912.8 m111 in1991/922.6 m102 in1992/932.9 m115 in1993/942.9 m112 in1994/953.0 m119 in1995/963.5 m138 in1996/972.3 m92 in1997/982.9 m115 in1998/992.7 m107 in1999/002.9 m113 in
- 2000s2000/013.5 m138 in2001/022.6 m103 in2002/033.7 m145 in2003/042.3 m89 in2004/053.4 m132 in2005/063.5 m139 in2006/071.9 m74 in2007/083.0 m117 in2008/092.8 m109 in2009/103.2 m126 in
- 2010s2010/113.0 m117 in2011/123.4 m132 in2012/133.2 m125 in2013/143.6 m141 in2014/153.5 m138 in2015/162.3 m89 in2016/173.4 m135 in2017/182.5 m100 in2018/193.0 m119 in2019/202.6 m101 in
- 2020s2020/212.3 m89 in2021/222.9 m115 in2022/232.2 m88 in2023/242.9 m114 in2024/253.2 m126 in2025/262.1 m83 in
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