Mount Fuji Weather in September
In Mount Fuji, September brings high daytime temperatures around 25°C (77°F), with nights cooling to 17°C (63°F). It is the wettest month of the year, so expect more rainfall than usual.
Rainfall in Mount Fuji in September
As part of the rainy season, Mount Fuji sees around 19 days of rain in September, with an average of 286 mm (11 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Mount Fuji in September
September in Mount Fuji sees highs of 25°C (77°F) and lows of 17°C (63°F) overnight. During September, the summer season is in full swing. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and August typically offer the best weather for Mount Fuji.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Mount Fuji's climate page.
Mount Fuji Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
25°C (77°F)
Chance of Rain
65%
Precipitation
286 mm (11 in)
Rainy days
19 days
Humidity
68%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mount Fuji typically drop from around 25°C (77°F) at the start of September to approximately 20°C (68°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Mount Fuji in September
Browse day-by-day weather records for Mount Fuji spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mount Fuji historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Mount Fuji.
- The warmest day in September was on September 2, 2025, with a maximum of 36°C (97°F).
Best Places in Japan in September
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Mount Fuji in September
Warm but pleasant conditions in Mount Fuji in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Mount Fuji in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Mount Fuji's climate page.
See the full Mount Fuji climate overview or explore weather in Japan.
