Japan in September
September is one of Japan's weaker months (rank 10 of 12): its 32 destinations average 60/100, led by Sapporo at 86 — 24°C and 13 rainy days — while Ishigaki is warmer at 35°C and scores 69.
#10 of 12 months for Japan · 32 destinations · updated September 2026 · climate normals from ERA5 reanalysis
🇯🇵 Japan, month by month
60/100 in SeptemberWhere in Japan in September
Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means September is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.
What's on in Japan in September
- Sapporo Autumn Fest · Sapporo · 11 Sep – 3 Oct
- Autumn colour · Sapporo and 1 more place · 20 Sep – 5 Nov (usually)
- Okinawa Zento Eisa Festival · Okinawa · 4–6 Sep
- Seiji Ozawa Matsumoto Festival · Matsumoto · 15 Aug – 10 Sep (usually)
- Kanazawa Jazz Street · Kanazawa · 19–21 Sep
- Kishiwada Danjiri Matsuri · Osaka · 18–20 Sep
- Toro Matsuri (Lantern Festival) · Nozawa Onsen · 8–9 Sep
- Jozenji StreetJazz Festival · Sendai · 12–13 Sep