Cancellation of the 40th Onogawa Onsen Firefly Festival

  • Cancellation of the 40th Onogawa Onsen Firefly Festival

In an effort to prevent the spread of COVID-19, the 40th Onogawa Onsen Firefly Festival has been cancelled.


Visitors are still welcome to come view the fireflies though, so please feel free to stop by the onsen to enjoy the spectacle!


- Firefly Viewing Information -
Mid-June to mid-July
• Around 8:00 pm - 9:00 pm
• Location: Onogawa Onsen Firefly Park
• In order to environmentally protect the area in which the fireflies live, please make sure to closely adhere to the following guidelines.


1. Do not use the flash on cameras or other types of light
2. Do not touch or capture the fireflies
3. Take any trash that you have with you
4. Do not yell or make loud noises


We ask for your cooperation in following the guidelines in order to protect the fireflies.


Firefly Tours


Open Period: June 20 (Sat.) - July 19 (Sun.)
        Tours will be conducted on Monday, Tuesday, Friday, Saturday, and Sunday during the open period


Meeting Location: Onogawa Onsen Kataha no Ashi


Time: Tours begin at 8:00 pm


Participation: Anyone is free to participate


Fee: Free


Lottery: Participants can draw tickets to potentially win prizes such as hotel vouchers or Yonezawa beef.


Additional Information: • In order to prevent the spread of COVID-19, please make sure to wear a mask when attending.
• Please write your name and address before drawing for the lottery.
• The period that the tour is held may change depending on when the fireflies appear.
Firefly tour flyer (PDF) (Japanese)


Organizer: Firefly Festival Executive Committee


Cosponsors: Onogawa Onsen Tourism Convention/Yonezawa Firefly Enthusiast Association


For more information, please visit the firefly festival website!