The best time to visit Mount Fuji depends on whether you want to climb it or simply view it. The official climbing season in 2026 is strictly limited to the summer months, from early July to September 10th. During this 71-day window, mountain huts are open, trails are maintained, and emergency services are active. Early September is considered the "sweet spot" for climbing, as the weather is stable, the rainy season (tsuyu) has ended, and the peak crowds of the mid-August "Obon" holiday have dispersed. For viewing and photography, the winter months (December to February) are the absolute best. During this time, the air is cold and crisp, resulting in the highest visibility and the iconic, thick snow cap that most people associate with the mountain. In contrast, the summer months often bring "haze" and cloud cover that can completely obscure Fuji for days at a time. If you want the best of both worlds—blooming scenery and a clear view—the cherry blossom season in April offers a beautiful but less reliable chance for a clear sighting of the peak against a pink floral backdrop.