15 Firefly Festivals Around Tokyo

While it’s not yet summer fireworks season, there are lights in the sky in Japan this time of year — fireflies.

Mid-May through July is mating season for the little glow bugs, which look like magical floating lanterns. Experience this stunning natural phenomenon at one of these Tokyo firefly festivals.

In a rush? In our opinion, the three best firefly festivals near Tokyo are the Adachi Firefly Night (500 fireflies), Hotel Chinzanso Tokyo garden (very popular; book ahead), and Fussa Firefly Festival (good for families). Read on for more details and other options.

1. Adachi Firefly Night

May 28 to 31, 2026 — slots from 7:45 p.m.
Purchase tickets on KKday (from ¥700)

Take part in this luminous summer tradition like no other. Held from May 28 to 31 at the Adachi Ward Biological Park (also known as the Adachi Park of Living Things), Firefly Night invites visitors to stroll through a darkened dome where around 500 genji-botaru dance in the air — a nostalgic nod to a time when fireflies once lit up Adachi’s waterways.

Adachi Firefly Night

Dates:May 28–May 31, 2026

Price:

Adults:
Advance sales: ¥700
Children:
Advance sales: ¥350

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Did you know? Japan’s two most common types of firefly are the genji-botaru and heike-botaru, which, for some reason, were named after rival clans during the Heian period. Perhaps it has something to do with how the phenomenon of fireflies emitting light is also known as hotaru gassen or “battle of the fireflies.”

2. Hotel Chinzanso Tokyo

May 13 to June 30, 2026, from 6:30 p.m. to 11 p.m.
¥2,000

Normally, the beautiful Japanese garden at Hotel Chinzanso Tokyo is only open to guests, but during firefly season, the hotel releases a limited number of tickets to the general public on select evenings.

You’ll also be treated to the Tokyo Sea of Clouds — Hotel Chinzanso Tokyo’s signature mist-garden installation inspired by unkai (literally “sea of clouds”), a natural phenomenon where mountaintops rise above low-lying mist at dawn. This year’s theme is yakumo or eight-layered clouds, so expect even more mist and an overall magical atmosphere.

We attended a preview in May 2026 and saw a solitary firefly by the famed red bridge (it was probably a little early, but they can be hard to spot too). It was still an awesome experience though, especially with the unkai.

For 2026, tickets are priced at ¥2,000 each for adults. Check the availability here.

Note: This is one of Tokyo’s most well-known firefly festivals, so book as far in advance as you can.

3. Fussa Firefly Festival

Firefly Park and the vicinity of Tamagawa Josui’s Ōme Bridge (both near Ushihama Station on the JR Ōme Line, or Kumagawa Station on the JR Itsukaichi Line), Fussa
May 31, 2026, from 3 p.m. to 9 p.m.
Free

Fussa’s one-night-only firefly festival features about 500 fireflies, and for side attractions, there are food booths and stage performances, such as Okinawa’s eisa dance, taiko, and soran bushi. You’ll want to see the fireflies’ orb-like lights, so the best time to visit is at or after sundown.

Fussa Firefly Festival

Dates:May 31, 2026

Entry:Free

Venue:

Hotaru (Firefly) Park - Fussa

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4. Yomiuriland

A short walk from Keiō-Yomiuriland Station, about 35 minutes from Shinjuku Station
May 23 to July 1, 2026 (closed May 25 to 28, and June 11)
Buy tickets for Yomiuriland online

HANA・BIYORI, part of the Yomiuriland theme-park complex, hosts Hotarubiyori, an expansive firefly-viewing event where you can spot genji-botaru early on, followed by the subtler glow of heike-botaru.

Viewings run nightly from 7:40 p.m. to 9 p.m. each night. Entry requires a timed firefly ticket (¥400 for elementary-school kids and up, but is free for preschoolers). You also have to pay admission to either HANA・BIYORI or Kakei no Yu.

5. Nerima Firefly Festival

Nakazato Kyodo No Mori (Nerima)
June 12–21 and July 3–12, 2026
Free admission

Nakazato Kyodo No Mori is a century-old grove hidden away in Nerima’s Ōizumimachi. On weekends from June 12–21 and July 3–12, the park comes alive with the soft flicker of fireflies dancing over ponds and streams. From 8 p.m. to 9 p.m., visitors can also explore interactive displays, catch mini nature talks, and play firefly-themed games.

Though free to attend, entry is limited to 150 guests per night (lottery system, enter via the official page). Note that the event will go forward even in case of rain. In the case of heavy rain, the organizers plan to set up an outdoor firefly tank.

6. Setagaya Firefly Festival and Egret Market

Approx. July 19 and 20 (2025 dates for reference; 2026 TBC)
Free

A few stops away from downtown Tokyo with direct access to Shibuya, Setagaya is a popular neighborhood for young families. This family-friendly Tokyo firefly festival is held along the same street where the Boroichi Market takes place.

During the day, visitors can enjoy looking at flower exhibits and purchase some of their own while from sunset onwards is when the real fun begins. Expect to see about 3,000 fireflies light up the walking course plotted out at the festival.

Setagaya Firefly Festival

Dates:

Mid

Jul

Entry:Free

Venue:

Boroichi Dori

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7. Kugayama Firefly Festival

Kugayama
2026 dates TBC; usually the first weekend of June
Free admission

Held over a weekend in June, this small but fun firefly festival sees snack and drink vendors line Kugayama’s main shopping street. The real attraction, however, is the release of thousands of fireflies.

That said, this isn’t the place to see clouds of airborne lights. The banks of the Kanda and Tamagawa Jōsui rivers, where the fireflies gather, are fairly leafy, so you may need to do some peering into the foliage to spot the little beasties.

Note: Kugayama is a 15-minute train ride from Shibuya on the Keiō-Inokashira Line. If you take the express train, it’s the last stop before Kichijōji.

Kugayama Firefly Festival 2026

Dates:

Early

Jun

Entry:Free

Venue:

Kugayama Station

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8. Yuyake Koyake Fureai no Sato

Hachiōji (near Mount Takao)
June 7 to 22 (2025 dates; 2026 TBC)
¥200

Yuyake Koyake Fureai no Sato is a camping ground and recreational facility in Hachiōji, and it’s one of the closest things you can get to experiencing countryside life in Tokyo.

One thing is that the green area isn’t located immediately close to a train station, so you’ll have to get off at JR or Keiō Line’s Takao Station, board a Nishi-Tokyo bus bound for Jimba Kogen-Shita, and get off at the Yuyake Koyake stop 30 minutes later.

9. Hirai River

15 to 20 minutes by bus from Musashi-Itsukaichi Station
Mid-June to mid-July, 2026
Free

During summer, a lot of Tokyo families take to nearby nature spots like rivers, lakes, and mountains. The Hirai River has clear waters and is a popular spot for firefly spotting. While this isn’t an official event, it still might be worth checking out if you ever find yourself outside central Tokyo.

For the best firefly spot, it has been said that fireflies tend to gather around the area surrounding the Iwai bus stop. Since there’s no parking, we recommend using public transportation from Musashi-Itsukaichi station. Prepare to go sometime around 7 or 8 p.m. to get the full experience. Just check transit times carefully.

10. Sankeien Garden Firefly Evening

Yokohama, Kanagawa
TBC, usually early June
¥700; get tickets to the garden online

Sankeien Garden is in Yokohama, but it’s not too far from Tokyo. For its annual “firefly evenings” event, the garden will be open until 9 p.m., but the organizers say that the best time to see the fireflies is from 7:30 p.m. to 9 p.m.

Note: The organizers caution that on rainy nights the fireflies might take cover behind leaves, so it will be difficult to see the little bugs.

11. Manyo Park

Yugawara, Kanagawa
May 29 to June 7, 2026, from 7:30 to 9 p.m.
Free

At the base of Hakone in Yugawara’s hot-spring district, Manyo Park is one of Kanagawa’s top firefly viewing spots.

The park goes dark to let the fireflies shine — literally. You can stroll among the gentle glow of fireflies, grab bites from local food trucks, and pick up traditional chōchin lanterns. More information here (in Japanese).

12. Saitama Prefectural Nature Learning Center

Kitamoto, Saitama
June 27 to July 15, 2026
¥500

From June 27 to July 26, 2026 — held every Friday, Saturday, Sunday, and public holiday — park staff will host free “Firefly Explanation Nights” from 6:20 p.m. to 7:20 p.m. near the main gate’s Fureai Bridge. Visitors can drop in anytime for short talks covering firefly etiquette, observation tips, and the ecology of the area (in Japanese).

The park will also hold guided heike firefly observation tours on July 1, 7, 8, 14, and 15 from 7:15 p.m. to 8:15 p.m. After a short lecture (in Japanese), you will head into the wetlands with staff guides to watch the fireflies after dark.

Important: Capacity is limited to 15 people per session, advance registration via Google Form is required, and participation costs ¥500. Both events may be canceled in cases of rain or severe weather.

13. Kōōji Temple

Misato, Saitama (10-minute walk from JR Misato Station)
June 13 to 17, 2026
Donation of at least ¥100 encouraged

For four nights in mid-June, Kōōji Temple hosts its annual firefly evenings, when glowing fireflies drift through the temple grounds alongside streams and ponds fed by clear well water.

Despite being tucked within a residential neighbourhood, the 400-year-old temple takes on an almost otherworldly atmosphere after dark. The event runs from June 13 to 16 from 7:30 p.m. onward. Admission is donation-based, with visitors asked to contribute at least ¥100.

14. Nagusa Firefly Village

Ashikaga, Tochigi
June 10 to 25, 2026
Free (donations encouraged)

Recognized by Japan’s Environment Agency back in 1989 for its efforts to protect and revive firefly populations, Nagusa is one of those rare places where you can still see these summer spirits dance through the air in their natural habitat.

Keep in mind, though, that Ashikaga is quite a hike from central Tokyo — you’re looking at around 3 hours of transit time — quite a commitment.

Head to the Nagusa Firefly Breeding Pond and along parts of the Nagusa River between 7:30 p.m. and 9 p.m., on a warm, humid night without rain — this is when the fireflies are most active. While there’s no entrance fee, donations to support firefly conservation are encouraged.

15. Roman Forest Republic (Roman no Mori)

Kimitsu, Chiba
May 28 to end-June, 2026
Free

The massive biotope, developed specifically for fireflies since 1991, offers one of Chiba’s more atmospheric early-summer night outings. Viewing takes place nightly from May 28 through the end of June, weather permitting, within the park’s Asobi Land area.

Admission is ¥800 on weekdays and ¥1,000 on weekends for everyone aged three and above. If there’s heavy rain or strong winds, the event will be canceled. More information here (in Japanese).

FAQs

When are fireflies in season in Japan?

Mid-May through July. The peak is late May through June.

Which firefly festival is best for beginners?

Kugayama — it’s free, and fairly easy to reach from Shibuya.

How much do tickets cost for Tokyo firefly festivals?

Free to ¥2,000. Most are free; Hotel Chinzanso is the priciest at ¥2,000 — but the award-winning garden is very pretty and has a neat cloud feature.

Do I need to book in advance?

Yes, especially for Hotel Chinzanso and those with lotteries. Others are walk-up.

This post was originally published in June 2015, and last updated in May 2026 by Aarohi Narain. While we try to ensure that all information is correct, dates and other details may vary.

Area(s)

Fussa

Hachiōji

Mejiro

Shibuya

Yokohama

Places Mentioned

• Accommodation
• Hotel Chinzanso Tokyo
• Places
• JA Yuyake Koyake Fureai no Sato
• Shibuya Fureai Botanical Garden
• Sankeien Garden
• Hotaru (Firefly) Park – Fussa