Seeing Mount Fuji in September is possible, but it is considered one of the months with the lowest visibility due to the lingering humidity of summer and the peak of the typhoon season. Statistically, the chance of a clear, unobstructed view in September is significantly lower (often below 40%) compared to the winter months of December through February, when the air is dry and cold. During September, the mountain is often shrouded in thick clouds or a "summer haze" caused by warm air hitting the peak. Additionally, the iconic snow cap is usually completely melted in September, giving the mountain a dark, volcanic appearance that some travelers find less "picturesque" than its winter look. To increase your chances, it is highly recommended to stay overnight in the Fuji Five Lakes area (like Kawaguchiko) and view the mountain at dawn (6:00 AM – 8:00 AM), which is when clouds are least likely to have formed.