Chrysanthemum / Early autumn
Japan in September 2026
September 1, 2026 to September 30, 2026 in JapanAlmanac: 21 sourced event records, 5 seasonal signals, planning caveats, and Hanafuda context.
- Window
- September 1, 2026 to September 30, 2026
- Events
- 21
- Signals
- 5
Use This Month
Temporal openings
What Makes This Window Distinct
The month currently surfaces 12 particularly timely opportunityies and 5 caveats from the deterministic Almanac query.
July 17-November 15, 2026
Chuson-ji 900th Anniversary Secret Buddha Opening
A 900th-anniversary temple program in Hiraizumi includes the public opening of a normally hidden Buddhist image through mid-November.
2026 date announced / Chusonji Temple, HiraizumiSeptember 13-27, 2026
Grand Sumo September Tournament
The autumn Tokyo honbasho returns to Ryogoku Kokugikan for fifteen days of professional sumo.
2026 date announced / Ryogoku Kokugikan, TokyoApproximate mid-September to early October window
Early Autumn Color in Parts of Hokkaido
JNTO's September framing flags early foliage in parts of Hokkaido, making northern and higher-elevation routes seasonally different from much of Honshu.
Source-guided approximate window / Parts of HokkaidoJuly 18-September 13, 2026
Special Exhibition "Buddhist Paintings of Nara: Reviving the Splendor of Classical Tradition"
Nara National Museum hosts a special Buddhist painting exhibition through September 13, 2026.
2026 date announced / Nara National Museum, NaraSeptember 1-November 3, 2026
Tokyo Festival
A citywide performing-arts season with theatre, dance, music, international productions, and public programs across Tokyo.
2026 date announced / Venues across Tokyo, anchored by Tokyo Metropolitan TheatreSeptember 11-October 3, 2026
Sapporo Autumn Fest
A large outdoor food festival gathering Hokkaido produce, regional dishes, sake, wine, and sweets in central Sapporo.
2026 date announced / Odori Park, SapporoEvent ledger
Verified Event Records In This Month
These records overlap September 2026. Some are canonical standalone guides; others remain sourced listings until their planning context is deeper.
March 27-September 8, 2026
Hiroshima Peace Memorial Museum Special Exhibition
Hiroshima Peace Memorial Museum lists a special exhibition running from late March through early September.
July 17-November 15, 2026
Chuson-ji 900th Anniversary Secret Buddha Opening
A 900th-anniversary temple program in Hiraizumi includes the public opening of a normally hidden Buddhist image through mid-November.
July 18-September 13, 2026
Special Exhibition "Buddhist Paintings of Nara: Reviving the Splendor of Classical Tradition"
Nara National Museum hosts a special Buddhist painting exhibition through September 13, 2026.
September 1-3 every year
Owara Kaze no Bon
A night-time Bon dance tradition in Yatsuo, known for elegant processions through old streets.
September 1-November 3, 2026
Tokyo Festival
A citywide performing-arts season with theatre, dance, music, international productions, and public programs across Tokyo.
September 4-September 6, 2026
Okinawa Zento Eisa Festival
Okinawa's islandwide Eisa festival gathers traditional dance and music over the weekend after Obon.
September 7-9 every year
Kakunodate Festival
A castle-town festival where hikiyama floats, local music, and neighborhood negotiations fill Kakunodate's old streets.
September 11-13, 2026
Hanamaki Festival
A central Hanamaki festival with floats, mikoshi, Shishi Odori, Kagura Gongen Mai, and Hanamaki Bayashi performances.
September 11-12, 2026
Katakai Festival
Ojiya's Katakai neighborhood dedicates giant fireworks to Asahara Shrine over two autumn nights.
September 11-October 3, 2026
Sapporo Autumn Fest
A large outdoor food festival gathering Hokkaido produce, regional dishes, sake, wine, and sweets in central Sapporo.
September 13-27, 2026
Grand Sumo September Tournament
The autumn Tokyo honbasho returns to Ryogoku Kokugikan for fifteen days of professional sumo.
September 14-16 every year
Tsurugaoka Hachimangu Reitaisai
Kamakura's major shrine festival combines processions, ritual performance, portable shrines, and yabusame horseback archery.
September 17-21, 2026; public days September 19-21
Tokyo Game Show
Japan's major game-industry show expands to five days at Makuhari Messe, with public admission on the final three days.
September 18-October 4, 2026
Moon Art Night Shimokitazawa
A moon-themed neighborhood art festival with outdoor installations, performances, food, workshops, and evening walks through Shimokitazawa.
September 19-October 4, 2026
Aichi-Nagoya Asian Games
Asia's largest multi-sport event comes to Aichi and Nagoya, with ceremonies centered on the Nagoya stadium calendar.
September 19-21, 2026
Aizu Festival
Aizu-Wakamatsu marks the region's samurai history with a three-day festival centered on Tsurugajo Castle and the Aizu Hanko Gyoretsu parade.
September 19-20, 2026; test pulls September 6 and 18
Kishiwada Danjiri Festival
Teams pull large danjiri floats at speed through Kishiwada's streets in one of Osaka's best-known autumn festivals.
September 20, 2026
Yamagata Imonikai Festival
A riverside imoni gathering cooks Yamagata's autumn taro stew in a giant pot with service for tens of thousands.
September 24-27, 2026; public days September 26-27
Tourism EXPO Japan
A major travel-industry exhibition at Tokyo Big Sight, with trade and press days followed by public consumer days over the weekend.
September 24-26, 2026
VISIT JAPAN Travel & MICE Mart
JNTO's inbound travel and MICE business mart runs alongside Tourism EXPO Japan at Tokyo Big Sight.
Selected weekends and holidays, September 26-October 18, 2026
Matsue Suitoro Water Lantern Festival
Handmade lanterns and light installations gather around Matsue Castle and the castle-town waterways on autumn evenings.
Seasonal signals
Nature, Food, Weather, And Calendar Signals
fixed annual observance
Choyo no Sekku
The Chrysanthemum Festival falls on the ninth day of the ninth month and anchors Japan Almanac's September chrysanthemum vocabulary.
September 9 every year / Fixed annual date / Verified 2026-09-01seasonal food
Chushu no Meigetsu and Tsukimi Foods
NAOJ places the 2026 mid-autumn moon on September 25; JNTO describes Tsukimi offerings such as susuki, dango, and seasonal vegetables.
September 25, 2026; astronomical full moon September 27 at 01:49 JST / 2026 date announced / Verified 2026-09-01flower foliage
Early Autumn Color in Parts of Hokkaido
JNTO's September framing flags early foliage in parts of Hokkaido, making northern and higher-elevation routes seasonally different from much of Honshu.
Approximate mid-September to early October window / Source-guided approximate window / Verified 2026-09-01weather climate
Late-Summer Heat and Typhoon Tendency
JNTO frames September as nominally autumn while noting heat can linger and typhoons are most frequent from late August through much of September.
Approximate late-August through September tendency / Typical seasonal pattern / Verified 2026-09-01public holiday
September 2026 Public-Holiday Run
Japan's Cabinet Office lists Respect for the Aged Day on September 21, a bridge holiday on September 22, and Autumnal Equinox Day on September 23.
September 21-23, 2026 / 2026 date announced / Verified 2026-09-01Caveats
Travel-Decision Notes
These are deterministic planning caveats, not live operational advice. Re-check the linked source before travel.
- Late-Summer Heat and Typhoon TendencyUse this as climate context only; storm tracks and local heat conditions need fresh travel-week checks.
- Late-Summer Heat and Typhoon Tendency: weather sensitivityThe structured record marks this signal as highly sensitive to rain or storm disruption.
- Grand Sumo September Tournament: booking requiredAttendance depends on booking, tickets, or program availability.
- September 2026 Public-Holiday RunCrowd pressure is an editorial travel-planning implication from a three-day national holiday window, not a measured crowd forecast.
- September 2026 Public-Holiday Run: crowd implicationThe structured record carries a high crowd implication.
Sources
Source Bank For This Month Window
JapanAlmanac does not claim complete national event coverage. These are the source records currently strong enough to support this planning page.
- National Holidays for 2026 and 2027Cabinet Office, Government of JapanAccessed 2026-09-01
- Tokyo Game Show 2026Computer Entertainment Supplier's Association / Tokyo Game ShowAccessed 2026-09-01
- Aizu FestivalFukushima TravelAccessed 2026-09-02
- Hiroshima Peace Memorial Museum | Exhibitions & EventsHiroshima Peace Memorial MuseumAccessed 2026-09-06
- Sapporo Autumn FestHokkaido Tourism OrganizationAccessed 2026-09-01
- Chuson-ji Temple 900th Anniversary of the Opening of the Secret BuddhaIwate Tourism AssociationAccessed 2026-09-04
- Japan in SeptemberJapan National Tourism OrganizationAccessed 2026-09-01
- Tsukimi, Moon Viewing in JapanJapan National Tourism OrganizationAccessed 2026-09-01
- Tsurugaoka Hachimangu ReitaisaiJapan National Tourism OrganizationAccessed 2026-09-01
- VISIT JAPAN Travel & MICE Mart 2026Japan National Tourism OrganizationAccessed 2026-09-04
- Grand Tournament ScheduleJapan Sumo AssociationAccessed 2026-09-01
- Okinawa Zento Eisa Festival 2026 - September Events in ...Japan TravelAccessed 2026-09-06
- ChoyoKokugakuin University Digital Museum, Encyclopedia of ShintoAccessed 2026-09-01
- Moon Art Night Shimokitazawa 2026Moon Art Night ShimokitazawaAccessed 2026-09-01
- Meigetsu is not necessarily the full moonNAOJ Calendar WikiAccessed 2026-09-01
- Special Exhibition "Buddhist Paintings of Nara: Reviving the Splendor of ...Nara National MuseumAccessed 2026-09-06