Onogawa Onsen Hotaru Matsuri (Firefly Festival)

Event Overview

The Onogawa Onsen Hotaru Matsuri is a quintessential summer event held in the Onogawa Onsen district and Hotaru Park in Yonezawa City, Yamagata Prefecture. During this season, you can witness the rare sight of three different species of fireflies—Genji, Heike, and Hime fireflies—all dancing together. It is a special time to enjoy the mystical glow of fireflies alongside local food stalls and lively stage performances.

Highlights & How to Enjoy

Enchanting Firefly Watching

The main highlight is the sight of fireflies illuminating the darkness. Around Hotaru Park, you can experience the close-up beauty of three different species. It is a luxurious way to connect with nature through all your senses.

Food Stalls & Local Gourmet

On specific dates during the festival, food stalls will appear at Hotaru Park. You can enjoy snacks from food trucks, cocktails, and various local delicacies while soaking up the festive atmosphere of the hot spring town.

Stage Events

The festival features a variety of programs, including traditional local dances, comedy shows, and bingo games. Enjoy a lively summer night filled with music and performances.

Schedule

Event Period

June 20, 2026 (Sat) – July 20, 2026 (Mon/Holiday)

Firefly Guide (Free)

Dates: June 20 (Sat), 21 (Sun), 26 (Fri), 27 (Sat), 28 (Sun)

Meeting Time: 20:00

Meeting Point: In front of the Information Center (near Nidoka Ryokan)

Food Stalls & Booths

Dates: June 20 (Sat), 21 (Sun), 27 (Sat), 28 (Sun)

Time: 18:30 – 21:00

Location: Hotaru Park

Example Stage Events

July 4 (Sat) 18:00 – 21:00 (Opening ceremony, traditional arts, bingo, etc.)

July 5 (Sun) 18:00 – 21:00 (Yonezawa Minyo folk songs, comedy shows like 'Bambino', etc.)

Venue & Access

The event takes place in the Onogawa Onsen district and Hotaru Park in Yonezawa, Yamagata.

Tips for Visitors

For the best experience, we recommend joining the guided tours. Since the food stalls and stage events vary by date, please check the schedule in advance.

Rules & Etiquette

Protecting the Fireflies

To protect the delicate firefly habitat, please strictly follow these rules:

• *No Flash/Lights**: Using camera flashes or bright lights is prohibited.
• *No Touching**: Do not touch or attempt to catch the fireflies.
• *Keep it Quiet**: Please maintain a quiet environment and avoid loud shouting.
• *Trash**: Please take all your trash home with you.

Payment & Reservations

Please check the official website for specific payment methods and reservation requirements.