How much snow has Iso - Syöte gotten this season and over the last few ski seasons? Iso - Syöte gets an average annual snowfall of 31cm of snow per year and on average has 11 snowfall days. Check out Iso - Syöte historical snowfall using the grid below with average Iso - Syöte snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.