76 winters, day by day
Grandee Hatoriko Ski Resort, Japan. Every ski winter from 1950/51 to 2025/26.
Grandee Hatoriko 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 26% of 736 resorts
+1.8°C+3.2°F
The trend: from -3°C26°F to -1°C30°F. Point at a winter to read it.
Snowfall at the summit
−10%
The trend: from 1.5 m60 in to 1.4 m54 in. Point at a winter to read it.
Powder days at the summit
−1 day
The trend: from 2 to 1. Point at a winter to read it.
Days with a base at the summit
−14 days
The trend: from 46 to 32. Point at a winter to read it.
Days with fresh snow at the summit
−4 days
The trend: from 42 to 38. 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−3%
Then
1.5 m58 in
Now
1.4 m56 in
- Snowfall in the village−3%
Then
1.5 m58 in
Now
1.4 m56 in
- Powder days at the summit±0 days
Then
2
Now
2
- Days with a base at the summit−3 days
Then
41
Now
38
- Average temperature at the summit+1.1°C+1.9°F
Then
-3°C27°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
All winters
- 1950s1950/511.5 m61 in1951/521.9 m75 in1952/531.5 m60 in1953/541.1 m42 in1954/551.7 m65 in1955/562.4 m94 in1956/571.9 m76 in1957/581.2 m47 in1958/5997 cm38 in1959/601.0 m41 in
- 1960s1960/611.5 m58 in1961/621.5 m59 in1962/631.2 m46 in1963/642.0 m78 in1964/651.4 m53 in1965/661.6 m61 in1966/671.3 m53 in1967/681.2 m49 in1968/691.9 m76 in1969/701.2 m47 in
- 1970s1970/711.3 m52 in1971/721.3 m51 in1972/731.4 m54 in1973/741.5 m60 in1974/751.9 m73 in1975/761.1 m45 in1976/771.5 m59 in1977/781.9 m73 in1978/791.0 m40 in1979/801.3 m52 in
- 1980s1980/811.8 m71 in1981/821.0 m40 in1982/831.5 m60 in1983/841.9 m74 in1984/851.7 m67 in1985/861.9 m74 in1986/871.6 m61 in1987/881.6 m63 in1988/891.4 m56 in1989/9085 cm33 in
- 1990s1990/911.1 m42 in1991/921.4 m55 in1992/931.4 m56 in1993/941.3 m53 in1994/951.3 m50 in1995/961.4 m55 in1996/971.2 m47 in1997/981.8 m69 in1998/991.1 m43 in1999/001.2 m46 in
- 2000s2000/012.0 m77 in2001/021.1 m43 in2002/031.8 m70 in2003/0499 cm39 in2004/052.0 m80 in2005/061.9 m74 in2006/0783 cm33 in2007/081.2 m46 in2008/091.5 m59 in2009/101.8 m70 in
- 2010s2010/111.6 m64 in2011/121.7 m68 in2012/131.6 m65 in2013/142.3 m91 in2014/151.8 m69 in2015/161.1 m45 in2016/171.5 m59 in2017/181.3 m50 in2018/191.1 m44 in2019/201.3 m51 in
- 2020s2020/2198 cm39 in2021/221.3 m53 in2022/231.1 m43 in2023/241.4 m56 in2024/251.4 m53 in2025/2684 cm33 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