How much snow has Bumbach Schangnau gotten this season and over the last few ski seasons? Bumbach Schangnau gets an average annual snowfall of 127cm of snow per year and on average has 13 snowfall days. Check out Bumbach Schangnau historical snowfall using the grid below with average Bumbach Schangnau snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.