September sits in Japan's shoulder season — too hot for many Western tourists, but significantly cooler than August, with fewer crowds and lower accommodation prices. For travelers who can tolerate warmth, it's one of the most comfortable and affordable times to visit.
September Weather
Early September: Still warm — Tokyo averages 29°C early in the month, humidity declining from August peaks. Mid–Late September: Genuinely pleasant — 22–26°C in Tokyo and Kyoto, comfortable evenings. Typhoon season: September is peak typhoon month. Most typhoons pass in 1–2 days; travel resumes quickly. Keep your itinerary flexible and check NHK World or Japan Meteorological Agency for forecasts. Hokkaido: Excellent in September — 20–22°C, Sapporo's beer garden season ends but hiking season peaks.
Silver Week (Late September)
Japan has a cluster of national holidays in late September: Respect for the Aged Day (third Monday) and Autumnal Equinox Day (around September 22–23). Some years these create a 5-day "Silver Week" holiday — avoid domestic travel on these dates, as bullet trains and tourist spots fill up.
Best Activities in September
Hiking: Mt. Fuji season ends September 10 — do the Fuji climb in early September for the best combination of clear skies and smaller crowds compared to August. Coastal and island travel: Okinawa, Miyajima, and Izu Peninsula are great before the sea gets cold. Kyoto temple gardens: Far less crowded than November or spring. The city is warm but walkable. Festivals: Kishiwada Danjiri Matsuri (Osaka, September 14–15) — one of Japan's most intense festivals with massive wooden floats pulled through narrow streets at speed.
Why September Is Underrated
Tourist numbers drop significantly after August's school holiday peak. Accommodation prices in popular areas can be 20–40% lower than July–August or November peaks. You get most of Japan's attractions with noticeably fewer crowds, particularly in Kyoto where the famous bamboo grove and Fushimi Inari are manageable even on weekdays.
Frequently Asked Questions
Is September a good time to visit Japan?
September is a transitional month: the worst of summer heat and humidity fades in the second half, typhoon risk peaks (particularly mid-September), and crowds from summer peak season have thinned. Late September offers good conditions — warm but not oppressive, pre-foliage season pricing.
What is the weather like in Japan in September?
Early September: similar to August — hot (28–33°C), humid, some typhoons. Late September: temperatures drop to 22–28°C, humidity decreases, clearer skies. Tokyo and Osaka are more comfortable by the last week of September.
Are there any festivals in Japan in September?
Several regional festivals occur in September. The Kishiwada Danjiri Matsuri in Osaka (mid-September) involves teams racing enormous wooden festival floats through streets — one of the most energetic autumn festivals. The Respect for the Aged Day holiday (third Monday of September) is a public holiday.
Should I avoid Japan in September due to typhoons?
Typhoons are possible but not certain. Japan is well-prepared for typhoons: trains and attractions typically close for the duration, then reopen. Having flexible booking (refundable hotels, changeable trains) is sensible. Travel insurance covering natural disasters is recommended for September travel.