How much snow has Rottach - Egern gotten this season and over the last few ski seasons? Rottach - Egern gets an average annual snowfall of 113cm of snow per year and on average has 13 snowfall days. Check out Rottach - Egern historical snowfall using the grid below with average Rottach - Egern snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.