Hakone Fireworks 2026: Lake Ashi Summer Festival Week, Night by Night

Hakone Fireworks 2026: The Lake Ashi Summer Festival Week at a Glance

Hakone Shrine anchors the week, and 2026 marks the shrine's 1,269th anniversary. Local organizers call the full run the 1269 Lake Ashi Summer Festival Week for that reason. Six fireworks nights spread across four bays between July 31 and August 5. A seventh event, Daimonji-yaki, follows on August 16 near Gora, timed to Obon rather than the shrine calendar. Watching from the public shoreline is free; a boat cruise or a hotel's reserved viewing plan is what costs money. This week sits inside Hakone's full festival calendar, but it draws the year's largest lakeside crowds.

Which Fireworks Night Fits Your Trip?

Every night draws a different crowd and a different visual style. Match the date to what matters most on your trip, not just to whichever day you happen to arrive.

• Best for photographers: Torii-yaki on August 5, when two burning six-meter torii gates frame roughly 3,500 shells.
• Best for families: Hakone-en Summer Night Festa on August 2-3, with resort dining, taiko drums, and a Digital Starmine synced to music.
• Best for quiet viewing: Kojiri Ryujin Festival on August 4, on the northern shore near Togendai Port, where underwater fireworks bloom flat across the water.
• Best for tradition: Kosui Matsuri on July 31, when Hakone Shrine's chief priest sails out to honor Kuzuryu Myojin before roughly 5,000 shells launch.

July 31: Kosui Matsuri Opens the Week at Moto-Hakone Bay

Kosui Matsuri, the Lake Festival, opens the week at Moto-Hakone Bay. The festival honors a nine-headed dragon said to have lived in the lake before a monk tamed it to protect nearby villages. At dusk, Hakone Shrine's chief priest sails onto Lake Ashi to make an offering to Kuzuryu Myojin, the lake's guardian deity, according to the shrine's official site. Roughly 5,000 shells launch from 8:00 PM once the priest returns, mixed with underwater fireworks and star mines. Paper lanterns float on the water alongside the display. This is the single largest shell count of the week.

August 1: Hakone Shrine's Reitaisai and the Torii of Peace

August 1 continues the week with Hakone Shrine's Reitaisai, its annual grand festival. Daytime rituals include tea ceremony, kendo demonstrations, and poetry readings on the shrine grounds. Fireworks begin at 8:00 PM directly in front of the shrine's Torii of Peace. About 2,300 shells reflect off Lake Ashi during the show.

August 2-3: Hakone-en Summer Night Festa's Digital Starmine

Hakone-en hosts two consecutive nights of fireworks on August 2 and 3. On the morning of August 2, the Gojinkousai Festival sends traditional boats out from Hakone Shrine before the evening fireworks. Roughly 2,500 to 3,000 shells launch each night at 8:00 PM from Hakone-en Bay, right in front of the resort. The signature moment pairs a computer-synced Digital Starmine with a live taiko drum performance. Niagara-style falls, message fireworks, and rapid-fire shells round out the two-night program. Visitors can submit well-wishes that get read out during the show. Food stalls line the resort grounds, and sightseeing boats depart from Hakone-en for guests who want a view from the water. Hakone-en sits roughly a 30-minute walk from Moto-Hakone, too far to combine with an evening at the other bays. Hakone-en's own event line is 0460-83-1151 for same-day questions.

August 4: Kojiri Ryujin Festival's Underwater Fireworks

Kojiri Ryujin Festival takes place on Lake Ashi's northern shore, in Kojiri Bay near Togendai Port. A Shinto ritual at Kuzuryu Shrine starts the evening, and priests carry a sacred flame to light a bonfire at Lake Shiraito Bay. That bonfire signals the fireworks to begin. Local Soran dancers and live music perform before the display gets underway. About 2,200 shells launch from 8:00 PM, and the show's underwater fireworks bloom into a flat, semicircular shape on the lake's surface. Surrounding cliffs echo the sound back across the bay, which makes this the most enclosed, intimate show of the week.

August 5: Torii-yaki Burns Two Six-Meter Gates on the Water

Torii-yaki closes the main festival week and is often called its best show. Rituals at Komagata Shrine precede the main event. Two six-meter torii gates, built specially in the lake, are set on fire at around 7:45 PM. Fireworks follow at 8:00 PM, rotating through large shells, low blooms, and underwater fireworks until the gates burn down. About 3,500 shells launch in total, fewer than July 31's count but paired with the burning gates as the visual anchor.

August 16: Daimonji-yaki, Hakone's Mountainside Finale

Daimonji-yaki closes Hakone's Obon season near the summit of Mt. Myojo, at 924 meters elevation, close to Gora and Miyagino. Crews spend two months preparing the giant kanji character Dai, meaning large. Fire crews light it at 7:30 PM, and about 2,000 fireworks follow above the mountainside. Hakone has held the fire festival almost every year since 1921. Organizers proceed in light rain, but severe weather pushes the display to August 17. For day-of updates, call the Hakone Gora Tourist Association at 0460-82-2300.

• Material: about 250 bundles of dried bamboo
• Torches: 200 to 300 torches, each roughly 2.5 meters tall
• Finished size: the character spans 108 meters wide
• Elevation: near Mt. Myojo's 924-meter summit

Bay-Hopping Logistics: Moto-Hakone and Kojiri Sit at Opposite Ends of the Lake

Moto-Hakone Bay and Kojiri Bay sit at opposite ends of Lake Ashi, and neither is walkable to the other after dark. Hakone-en Bay adds a third point, about a 30-minute walk from Moto-Hakone. Picking one bay for the night, rather than chasing two shows, keeps the evening simple. The Lake Ashi pirate ship cruise runs special evening sailings during festival week and offers a close-up view without needing a lakeside spot. Between fireworks nights, Hakone's other attractions fill the daylight hours.

• Adult pirate ship tickets: ¥4,400 (¥5,000 on July 31, and on 7:20 PM departures August 4-5)
• Child tickets, ages 12 and under: ¥2,200 (¥2,500 on the same dates and departure times)
• Three ticket types, one for each departure port: Moto-Hakone, Hakone-machi, and Togendai
• Book through Asoview at least 30 days ahead; festival-week sailings fill fast

What to Bring and How to Get Back to Your Hotel

Hakone Tozan buses run a limited schedule after 8:00 PM, which is exactly when most shows start. Staying lakeside, in Moto-Hakone, Hakone-machi, or Gora keeps you from being stranded after the last shell fades. Yatai food stalls take cash only, so carry enough for dinner and snacks at whichever bay you pick. Mosquito repellent and a small mat for lakeside sitting round out the packing list, since most viewing spots are grass or paved lakefront rather than seating. Between shows, Hakone's food scene guide covers where else to eat if you're staying multiple nights.

Where to Stay for Each Fireworks Night

Base yourself close to the night's launch point rather than commuting between bays. Moto-Hakone and Hakone-machi put you within walking distance of the July 31, August 1, and August 5 shows. The Prince Hakone Lake Ashinoko sits directly on Hakone-en Bay, with guest-only lakeside viewing for the August 2-3 Digital Starmine. In 2026, the hotel opened advance booking to top-tier members in early June, ahead of general sales, and offers dinner-and-breakfast, breakfast-only, and room-only meal plans. Gora and Miyagino work best for August 16's Daimonji-yaki, since the fire and fireworks sit on the mountainside above town. Hoshino Resorts KAI Hakone, about a 7-minute cab ride from Hakone-Yumoto Station, lists rooms from ¥38,000 per person per night. Hoshino Resorts KAI Sengokuhara, about a 15-minute cab ride from Gora Station, lists rooms from ¥57,500 per person per night. Match your hotel to your date rather than picking one base for the whole week. See Where To Stay In Hakone Travel Guide for lakeside options beyond the hotels named here. Build the week into a full Hakone Itinerary: 2-Day Travel Plan + Map & Tips instead of a single overnight trip.