Things to do in Yokohama in September come at you fast and confused about what season they’re in. One weekend you’re sweating through a beer garden. The next you’re standing in a lit-up garden at night, watching a full moon, feeling weirdly emotional about it.
Early September still runs on summer momentum, with fireworks and people fanning themselves at outdoor stalls in the heat. By the third week, the city shifts into moon viewing season. Kamakura also stacks two of its biggest shrine festivals into this exact window, so if a day trip is on your radar, this month beats fighting the November leaf-peeping crowds by a wide margin.
Before we get to it, Japanese event pages shift dates or cancel for rain with almost no warning, and September still gets the occasional typhoon skimming past the coast. Bookmark the official site, not just this post, and check it again a few days out.
Radio Nippon’s Yokohama Disaster Prevention Fair (横浜防災フェア2026)
Probably the least photogenic event on this whole list of things to do in Yokohama in September, but also the one I’d actually push you to prioritize. Japan does not mess around with earthquake prep, and this fair at City Hall lets your kid run a stamp rally while you quietly figure out if your go-bag is stocked or if it’s still just a tote bag with expired granola bars sitting in the bottom. Mine was the tote bag situation for two full years before I fixed it.
- Date: September 4–5, 2026
- Location: Yokohama City Hall, 1st Floor Atrium
- Fee: Free
- Website: jorf.co.jp
Sagamihara Noryo Fireworks Festival (相模原納涼花火大会)
Fifty plus years running this show means Sagamihara has the logistics down in a way newer festivals rarely manage. It sits along the Sagami River, sightlines wide open, no shoulder-to-shoulder crush for six hours straight. If Yokohama’s central fireworks spots stress you out, this is the calmer version of the same idea.
- Date: September 5, 2026
- Location: Sagami River, upstream of Takadabashi, Sagamihara
- Fee: Free to view from public areas
- Website: sagamiharahanabi.com
Yokohama Night Flowers Weekend Fireworks (横浜ナイトフラワーズ2026)
Five minutes. No tickets. No camping out on a tarp for three hours beforehand to save a patch of grass. These small bursts over the harbor at Osanbashi and Shinko Pier work as a bonus if you’re already out walking. Since it’s short, don’t build a whole evening around it, but treat it more like a bonus if you’re already in the area.
- Date: September 5 and September 20, 2026
- Location: Shinko Pier and Osanbashi Pier, Yokohama
- Fee: Free
- Website: yokohama-nightflowers.com
17th Icha Icha Festival “Okinawa in Yokosuka” (第17回 いーちゃ、イチャ Festival)
This is Miura Peninsula’s biggest Okinawa-themed event, 17 years running, with awamori, Orion beer, Okinawa soba, eisā dance, and sanshin experiences.
- Date: September 5–6, 2026
- Location: Yokosuka City Hall Front Park, Yokosuka
- Fee: Free to enter, food and drink purchased separately
- Website: ichafes.jp
Yokohama Central Wholesale Market Open Saturdays (横浜市中央卸売市場 水産仲卸棟の一般開放)
Every Saturday this month, the seafood wholesale area opens to regular people, tuna cutting shows included. You buy fish straight from people who’ve spent decades learning what makes one tuna better than the next. Skip the supermarket for one weekend. See what you’ve actually been missing.
- Date: Every Saturday in September (5th, 12th, 19th, 26th), 2026
- Location: Yokohama Central Wholesale Market, Main Market
- Fee: Free to enter
- Website: city.yokohama.lg.jp
Ultraman Exhibition: 60th Anniversary at Red Brick Warehouse (ウルトラマンシリーズ60周年展)
Covers over 50 works from the franchise, dioramas included, plus an immersive video space that’s more elaborate than you’d expect from a tokusatsu tribute show. Photo spots sit around every corner. Build in extra time if your kid wants a picture next to every single monster in there, because they will.
- Date: September 5–27, 2026
- Location: Yokohama Red Brick Warehouse No.1, 2F/3F
- Fee: Ticketed, check official site for pricing
- Website: m-78.jp
Cupnoodles Museum 15th Anniversary Stamp Rally (スマホdeスタンプラリー)
A digital stamp rally that sends you to eight spots around Minatomirai, which turns a single museum stop into an actual afternoon exploring the waterfront. Stamps in, goods out. Low effort, keeps a six-year-old walking without complaint the whole time.
- Date: September 2–30, 2026
- Location: Cupnoodles Museum Yokohama and various Minatomirai spots
- Fee: Museum entry fee applies, stamp rally itself is free with a smartphone
- Website: cupnoodles-museum.jp
Night Museum: Mystery of Tutankhamen (ミステリー・オブ・ツタンカーメン)
You get handed a lantern and sent into a dark exhibition space to solve seven puzzles tied to Ancient Egypt. Save this one for kids who can handle a dim room without melting down. Probably not toddlers. It’s a different format from your usual glass-case museum crawl, and it works.
- Date: September 2–30, 2026 (closed most Tuesdays)
- Location: Tutankhamun Museum, PLOT48, Yokohama
- Fee: Ticketed, check official site for pricing
- Website: tutankhamen.jp
Japan Beer Festival Yokohama (ジャパン・ビアフェスティバル横浜2026)
Osanbashi Hall fills with craft beer for two straight days, Japanese and international brews side by side. Adults-only stop, obviously. Sort out childcare or trade off with your partner if you’re both into it. The harbor view from the venue gives the non-drinker in your group something to actually look at while everyone else samples their way down the list.
- Date: September 12–13, 2026
- Location: Yokohama Port Osanbashi Hall
- Fee: Ticketed, tasting sets sold separately
- Website: beerfes.jp/yokohama2026
Vietnam Festa in Kanagawa (ベトナムフェスタ in 神奈川 2026)
One of the bigger multicultural festivals in the prefecture, and a solid reminder that the expat community here stretches well past the usual Western crowd. Water puppet shows, live music, lanterns strung up everywhere, food cooked the way it’s actually meant to taste rather than softened for a local audience.
- Date: September 12–13, 2026
- Location: Nihon-odori, Kanagawa Prefectural Government Main Building, Zou-no-hana Park, Yokohama
- Fee: Free
- Website: vietnamfesta
Tsurugaoka Hachimangu Annual Festival (鶴岡八幡宮例大祭)
Kamakura’s most famous shrine puts on its biggest event of the year here, three full days of it. Mikoshi procession through the streets. Traditional dance. A Yabusame horseback archery show that draws a real crowd. If you’re only doing one Kamakura trip this month, time it around this weekend, and expect the local buses running out from the station to fill up fast. For me, this event is one of the most interesting in the list, especially if you know the history behind Tsurugaoka Hachimangu.
- Date: September 14–16, 2026
- Location: Tsurugaoka Hachimangu, Kamakura
- Fee: Free to attend the festival itself
- Website: hachimangu.or.jp
Yokohama Chinatown Mid-Autumn Festival (横浜中華街 中秋節)
Chinatown goes all in on Mid-Autumn Festival, mooncakes stacked in every shop window, and a proper moon viewing gathering on the 25th. T
- Date: September 16–30, 2026 (main event September 25)
- Location: Yokohama Chinatown, including Yamashitacho Park
- Fee: Free to walk around, food and mooncakes cost extra
- Website: chinatown.or.jp
Goryo Shrine Menkake Gyoretsu Mask Procession (御霊神社例祭と面掛行列)
The strangest thing on this entire list, and I mean that as a compliment. Ten people walk through the streets near Goryo Shrine wearing historical masks, a demon, a tengu, one representing a pregnant woman. The whole procession is a protected Intangible Cultural Property of the prefecture. This is the sort of afternoon that reminds you why living here stays interesting.
- Date: September 18, 2026
- Location: Goryo Shrine, Sakanoshita, Kamakura
- Fee: Free
- Website: trip-kamakura.com
Sagamihara Yosakoi RANBU! (相模原よさこいRANBU！)
Teams compete near Kobuchi Station with choreographed routines set to modern music. If your kid gets antsy standing still at the more formal events, bring them to this loud and colorful festival instead.
- Date: September 20, 2026
- Location: Kobuchi Station Avenue, Sagamihara
- Fee: Free
- Website: sagami-yosakoi-ranbu.com
Yokohama Oktoberfest (横浜オクトーバーフェスト 2026)
Red Brick Warehouse’s Oktoberfest packs out every single year, and it earns the crowd. German beers, local craft brews, big tents, live music, a new original beer mug set this time around. Go early on a weekend or hit it on a weekday evening.
- Date: September 18 through October 4, 2026
- Location: Yokohama Red Brick Warehouse Event Plaza
- Fee: Free entry, food and drink purchased separately
- Website: yokohama-akarenga.jp
Samukawa Shrine Yabusame Shinji and Reisai (寒川神社 流鏑馬神事・例祭)
A second Yabusame archery show this month, this time in the classic Takeda style at Samukawa Shrine. Quieter and far less packed than Tsurugaoka Hachimangu’s version. Pick this one if you actually want to see what’s happening instead of craning your neck over a wall of shoulders.
- Date: September 19–20, 2026
- Location: Samukawa Shrine, Samukawa
- Fee: Free to attend
- Website: samukawajinjya.jp
Hakkeijima Sea Paradise Hanabi Symphonia (花火シンフォニア)
About 2,500 fireworks timed to live music along the boardwalk. Hakkeijima knows how to turn a fireworks show into a full production, and pairing it with a day at the park keeps the planning simple. One outing, minimal decisions required.
- Date: September 19, 20, 21, and 22, 2026
- Location: Yokohama Hakkeijima Sea Paradise Boardwalk
- Fee: Park admission required, check site for fireworks-specific pricing
- Website: seaparadise.co.jp
This is one of my favorite fireworks events near Tokyo, and I go every year. You should, too! Read for my tips and full review:
Miura Kaigan Beer Festival (三浦海岸ビールまつり)
This is a 5-day craft beer festival right on Miura Kaigan, pulling in breweries from along the whole Keikyu line, like Ebina Beer, Yokohama Beer, Yokosuka Beer, and several others rotating in and out across the run.
- Date: September 19–23, 2026 (11:00–19:00 daily, last day until 17:00)
- Location: In front of Miura Kaigan Station, Miura
- Fee: Free to enter, drinks purchased per glass from participating breweries
- Website: newcal.jp
Keikyu Beer Festa 2026 in Kamiooka (京急ビアフェスタ2026 in 上大岡)
Same railway company, same beer-festival format as Miura Kaigan, different neighborhood entirely. This one’s inside Keikyu Department Store to celebrate the store’s 30th anniversary. It will be joined by eight breweries running from Kamiooka down to Miura, plus food trucks, kids’ dance stages, and DJ sets after 5pm.
- Date: September 18–23, 2026 (final day until 17:00)
- Location: Keikyu Department Store, 7th Floor Event Space, Kamiooka
- Fee: Free entry, drinks purchased per ticket
- Website: keikyu-depart.com
Sankeien Garden Moon Viewing Gathering (三溪園「観月会」)
Sankeien already looks good during the day. At night, with the historic buildings lit up and live Gagaku and Koto playing through the grounds, it’s even prettier. Save this one for a date night or a quiet evening alone.
- Date: September 25–29, 2026
- Location: Sankeien Garden, Yokohama
- Fee: Ticketed, check official site for evening admission pricing
- Website: sankeien.or.jp
Hotel New Grand Moon Viewing Candle Night (お月見キャンドルナイト 2026)
The most polished, dressed-up option on this whole list. French cuisine, candlelight, live ballads, all inside the Starlight Room. Book ahead because this fills fast.
- Date: September 25, 2026
- Location: Hotel New Grand, Main Building 5F Starlight Room, Yokohama
- Fee: Dinner course pricing applies, reservation required
- Website: hotel-newgrand.co.jp
Tokyo Bay Great Thanksgiving Festival (東京湾大感謝祭2026)
An education-focused event at City Hall built around marine conservation and the future of fishing and coastal life around Tokyo Bay. It’s free, and great for a kid who keeps asking questions about the ocean that you can’t answer.
- Date: September 26–27, 2026
- Location: Yokohama City Hall Atrium
- Fee: Free
- Website: tokyowan-fest.com
Hadano Tobacco Festival (秦野たばこ祭)
The biggest festival Hadano puts on all year, honoring the region’s old tobacco farming history, closing out with fireworks. Further out than most of this list, so treat it as a real day trip. Fewer foreign visitors here too, which gives the whole thing a more local, unfiltered feel.
- Date: September 26–27, 2026
- Location: Around Odakyu Line Hadano Station North Exit, Hadano
- Fee: Free
- Website: city.hadano.kanagawa.jp
Fujisawa Citizen’s Festival (藤沢市民まつり)
A community festival built around local pride, spread out near Fujisawa Station and Akibadai Park. If you’re based anywhere in the Shonan area, this is the easy option that doesn’t require a train transfer.
- Date: September 26–27, 2026
- Location: Around Fujisawa Station and Akibadai Park, Fujisawa
- Fee: Free
- Website: city.fujisawa.kanagawa.jp
Marine Park Umiko Festival (海の公園「海公祭り 2026」)
Yokohama’s only bathing beach hosts a mikoshi parade, dance stages, food stalls, and a beach cleaning activity all in one day. A good way to close out beach season with your kid while doing something that actually helps the coastline instead of just leaving footprints on it.
- Date: September 27, 2026
- Location: Marine Park (Umi no Koen), Yokohama
- Fee: Free
- Website: hama-midorinokyokai.or.jp
Yokosuka Kaikoku Fireworks Festival (よこすか開国花火大会2026)
The big closer. Around 10,000 fireworks over the Miura Peninsula, one of the largest displays in the entire prefecture. If your fireworks budget for September has room for one more show, spend it here.
- Date: September 27, 2026
- Location: Umikaze Park and Umibe Fishing Park, Yokosuka
- Fee: Free to view from public areas
- Website: yokosuka-kanko.com
FAQs About Things to Do in Yokohama in September
Do I need to book these in advance?
Most of the outdoor festivals and fireworks shows are free, no reservation needed,. The exceptions are the ticketed exhibitions like Ultraman and Tutankhamen, plus the two dinner-style events, Hotel New Grand’s Candle Night and the Japan Beer Festival.
Which of these things to do in Yokohama in September are actually free?
The fireworks, the shrine festivals, Yosakoi, Chinatown’s Mid-Autumn celebrations, and most community festivals like Fujisawa and Hadano cost nothing to attend. The museums, exhibitions, and dinner events all charge.
Which ones work best with a young kid in tow?
The Cupnoodles stamp rally, the Disaster Prevention Fair, Marine Park’s beach festival, and the short Night Flowers fireworks all work well with a young kid, nothing here demands standing still for long. Sankeien’s moon viewing and the Hotel New Grand dinner belong to a night without the kids.
