Approximately 1,000 fireworks paint Saikai's night sky from offshore
About this spot
The 39th installment of Ooseto Town's summer tradition, held Thursday, August 13, 2026. Approximately 1,000 fireworks launch from offshore Seto Port, illuminating the night sky of the port that has flourished as a shipbuilding town. Sound reverberates off the surrounding mountains, delivering impact beyond the display's scale—a unique charm of this festival. Shoulder to shoulder with local residents, this moment epitomizes the perfect conclusion to Saikai City's summer.
Fireworks details
Name: おおせと夏まつり花火大会
Date & time: 8/13 (Thu) Time TBA
Venue: 瀬戸港沖合
Shells: approx. 1,000
Food stalls
Food stalls: Yes
※WalkerPlus 2026年開催情報(8/13)に「夏まつりでは、お祭りの雰囲気を盛り上げる多くの夜店が軒を連ねる」と記載。. Stall lineups change year to year. Please check the official site for the latest details.
Turn this into a day plan with stall time includedTips
Bad weather may result in cancellation or postponement, so check Saikai City's official announcement for confirmation on the day. After the event, roads around the port become congested, so staggered departure is recommended. As ground-level lighting is dim, having a smartphone flashlight ready is reassuring.
Best time to visit
Coordinated with the 7:00 PM – 8:00 PM display time. Secure a viewing spot at least 30 minutes before start.
Access & map
Nagasaki Prefecture, Seto Port Offshore
Model course featuring this spot
2026 39th Ooseto Summer Festival Fireworks Display - Full Day Course
Nagasaki
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