Mount Fuji is the highest mountain in Japan which is located about 60 miles southwest of central Tokyo in Shizuoka and Yamanashi Prefectures. The official climbing season of Mt. Fuji begins July 1 and runs through the end of August. Because of the weather, convenient transportation, and accommodation options, it's best to climb Mt. Fuji during these two months. Average monthly temperatures around the summit of the mountain are below the freezing point from fall to spring, and temperatures can drop below the freezing point all year round, including summer months. There are huge temperature differences between the foot of mountain and higher elevations. In addition, harsh, strong winds often blow around the summit. Please refer to the current temperature at the summit (Japanese site) by Japan Meteorological Agency and check the 6 Day Weather Forecast for Mount Fuji by Snow-Forecast.com before you go.