How much snow has Manganui Ski Area gotten this season and over the last few ski seasons? Manganui Ski Area gets an average annual snowfall of 7" of snow per year and on average has 2 snowfall days. Check out Manganui Ski Area historical snowfall using the grid below with average Manganui Ski Area snow stats that includes: Average Snowfall, Biggest Snowfall, Snowfall Days and Average Base Depth.