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  12. Upon arrival in Yonezawa

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  1. Tourism Pamphlet Download

  2. Experience Yonezawa through video

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  1. Around Nishi-Azuma: “2024 Summer Mounta…

  2. “Special Exhibition: Experience the wor…

  3. Tengendai Kogen: Easy Alpine Plant Viewing Tr…

  4. “Shirabu Onsen ‘Yama no Yukemuri …

  5. The Tengendai Kogen eMTB Hill Climb Competiti…

  6. Information on Cherry Picking in Yonezawa Cit…

  7. The 44th Onogawa Hot Spring Firefly Festival.…

  8. “Yonezawa’s Blooming Safflowers.&…

  9. “My Oni Girl” Location Pilgrimage…

  10. “My Oni GIrl” Stamp Rally begins …

  11. Toko Sake Warehouse Golden Week Event from 3r…

  12. Yonezawa Uesugi Festival 2024 Flyer is out!


Onogawa Onsen’s 43rd Firefly Festival!

The Onogawa Onsen Firefly Festival is starting very soon! If you’re here for the summer, make sure not to miss out on this absolute highlight of the night! You can see different types of fireflies depending on when you visit, so keep your eyes peeled when you stop by!

Firefly Viewing Period

Mid-June to Mid-July

Time: 8:00 pm ~ 9:00 pm

Venue: Onogawa Onsen Firefly Park

Notes for Viewing

–    Do not use flash photography or lights
–    Do not capture or touch the fireflies
–    Take any rubbish back with you
–    Keep quiet, do not be noisy

Firefly Guides

A tour guide from the onsen town will guide you to the prime viewing spots for fireflies.

Duration: 30 minutes
Available Days: 17th June 2023 ~ 17th July 2023, every Monday, Tuesday, Friday, Saturday, and Sunday
Time: 8:00 pm onwards

* Firefly guide services will be closed on 2nd July (Sunday) for the Firefly Festival.

Firefly Festival

Date: 2nd July 2023 (Sunday)
Time: 6:00 pm ~ 9:00 pm

The comedy duo, Slim Club, are guest stars for the festival.

Food Truck availability

If you need to grab a bite while you’re out, make sure to stop by on these dates!

Dates: 24th June (Saturday), 25th June (Sunday), 1st July (Saturday), 8th July (Saturday), 9th July (Sunday)

Venue: Firefly Park

For more information, check out this poster (Japanese)