76 winters, day by day
Tazawako Ski Resort, Japan. Every ski winter from 1950/51 to 2025/26.
Tazawako Ski Resort, 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 19% of 736 resorts
+1.6°C+2.8°F
The trend: from -6°C21°F to -4°C24°F. Point at a winter to read it.
Snowfall at the summit
−12%
The trend: from 3.3 m130 in to 2.9 m114 in. Point at a winter to read it.
Powder days at the summit
±0 days
The trend: from 4 to 4. Point at a winter to read it.
Days with a base at the summit
−17 days
The trend: from 138 to 120. Point at a winter to read it.
Days with fresh snow at the summit
−11 days
The trend: from 86 to 75. 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−9%
Then
3.3 m129 in
Now
3.0 m117 in
- Snowfall in the village−10%
Then
2.5 m98 in
Now
2.2 m88 in
- Powder days at the summit±0 days
Then
4
Now
4
- Days with a base at the summit−11 days
Then
134
Now
123
- Average temperature at the summit+0.9°C+1.6°F
Then
-6°C22°F
Now
-5°C24°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
- 1950s1950/513.1 m122 in1951/522.9 m115 in1952/532.6 m101 in1953/542.7 m107 in1954/553.7 m145 in1955/563.4 m133 in1956/573.7 m147 in1957/583.4 m135 in1958/593.0 m117 in1959/603.3 m130 in
- 1960s1960/613.4 m132 in1961/623.4 m132 in1962/633.2 m126 in1963/643.0 m119 in1964/653.6 m140 in1965/663.9 m152 in1966/672.9 m116 in1967/683.2 m126 in1968/692.9 m115 in1969/703.9 m152 in
- 1970s1970/712.8 m109 in1971/723.1 m123 in1972/733.4 m135 in1973/744.5 m175 in1974/753.8 m150 in1975/762.6 m102 in1976/773.5 m139 in1977/783.6 m141 in1978/792.8 m112 in1979/803.2 m126 in
- 1980s1980/813.1 m121 in1981/823.1 m120 in1982/833.1 m123 in1983/843.8 m148 in1984/852.9 m115 in1985/862.9 m115 in1986/873.4 m134 in1987/882.6 m101 in1988/893.0 m116 in1989/902.2 m85 in
- 1990s1990/912.7 m106 in1991/922.8 m109 in1992/933.2 m128 in1993/943.0 m120 in1994/952.7 m106 in1995/963.6 m140 in1996/972.7 m106 in1997/982.3 m91 in1998/993.1 m123 in1999/003.6 m141 in
- 2000s2000/012.8 m112 in2001/023.3 m131 in2002/033.1 m122 in2003/042.8 m109 in2004/052.9 m113 in2005/063.2 m125 in2006/072.7 m105 in2007/082.2 m85 in2008/093.3 m128 in2009/103.4 m133 in
- 2010s2010/113.2 m126 in2011/123.0 m119 in2012/132.9 m116 in2013/144.0 m157 in2014/153.3 m131 in2015/162.4 m93 in2016/172.9 m115 in2017/183.9 m155 in2018/192.9 m115 in2019/202.9 m112 in
- 2020s2020/212.3 m92 in2021/223.1 m122 in2022/232.3 m90 in2023/242.8 m111 in2024/253.1 m123 in2025/263.0 m116 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