View Mount Fuji Temperature In September PNG. Visiting mt.fuji in september and october is still possible with your own risk. September falls in the rainy season with an average precipitation of 270mm (10.6in).
Keep in mind that the base of fuji is usually very hot and humid in the summer, so you'll be changing quickly between sweating and freezing and back to sweating again.
Opening period always depends on snow condition. The weather pattern varies from year to year. There won't be any snow yet, some of the huts are still open or at least staffed because they do repairs, the weather may well be quite good, and there are less people around (so you don't have to queue on a mountain path). The average length of the day in september in mount fuji is 12.4h.