Lake Ashinoko Summer Festival Week

The Lake Ashinoko Summer Festival Week takes place annually for one week from July 31st to August 6th. Festivities are held in the four bays of Lake Ashinoko: Motohakone Bay, Hakone Bay, Hakoneen Bay, and Kojiri Bay, accompanied by a fireworks display. The highlight of the ceremonies is the Hakone Shrine Gochinza Memorial Festival held on August 1st.

Hakone-en Summer Fireworks Festival 2026

The Hakone-en Summer Night Festa 2026 will be held over two days, Sunday, August 2 and Monday, August 3, 2026, at Hakone-en.
Set against the majestic natural backdrop of Lake Ashi and the surrounding mountains, approximately 3,000 fireworks will light up the night sky and reflect beautifully on the lake surface each evening from Hakone-en Bay.
To coincide with the fireworks festival, The Prince Hakone Lake Ashinoko will offer exclusive accommodation plans.
For details on advance booking and accommodation plans, please see the information below.

• Dates: Sunday, August 2 and Monday, August 3, 2026
• Fireworks Launch Time: From 8:00 P.M. each night
• ※If you plan to dine at a hotel restaurant, please make a reservation for 5:30 P.M.
• Number of Fireworks: Approximately 3,000 per night
• Launch Location: Hakone-en Bay
• Note: Event will be canceled in case of severe weather