Last year, snow was first detected on Fuji on Oct 5. FUJIKAWAGUCHI: Japan's Mount Fuji, snowless for the longest time since records began 130 years ago, is expected to finally get its famous white cap back next week, a local forecaster said on Thursday (Oct 31). Snow on average begins forming on Japan's highest mountain on Oct 2 and the latest it had been detected before this year was in 1955 and 2016, when it fell on Oct 26. "Rain is likely to fall temporarily near Mount Fuji on Nov 6,"