Info I've found on climbing -
Official Climbing Season
July and August are the official climbing season. During these two months the mountain is usually free of snow, the weather is relatively mild, access by public transportation is easy and the mountain huts are open. Everybody without much hiking experience is strongly advised to tackle the mountain during the official climbing season.
Mount Fuji is divided into ten stations with the first station at the foot of the mountain and the tenth station being the summit. Paved roads go as far as the fifth station halfway up the mountain. There are four 5th stations on different sides of the mountain, from where most people start their ascent: