murmurMinamiboso Shirahama Ama Diver Festival
Minamiboso City · Plaza in front of Nojimazaki Lighthouse and the adjacent fishing harbour
Dates and details can change. Always check the official website before you go.
Chiba Tourism Navi (Chiba Prefectural Tourism and Products Association) · Last checked: Oct 11, 2026
Dates
Dates confirmed with official sources
- 2026
- Jul 18–19, 2026 （Ended） Bon dance from 19:00; night swim 20:30–21:30
- 2027
- Dates have not been announced yet. Please check the official website.
- Usual timing
- Usually mid July
- How the date is set
- Changes from year to year May be cancelled due to weather
- Venue
- Plaza in front of Nojimazaki Lighthouse and the adjacent fishing harbour
- City
- Minamiboso City, Chiba
About
Each summer, at the foot of Nojimazaki Lighthouse on the southern tip of the Boso Peninsula, Chiba Prefecture's biggest night festival takes place; it began in 1964. The great night swim is the moment everyone waits for: ama women divers in white carry blazing torches into the dark sea and, holding onto wooden tubs, swim in a ring around the harbor to pray for safe seas and good catches. It is said to recall how the divers once searched through the night for the crew of a ship wrecked off Nojimazaki. The torchlight is woven together with music, projected images, fireworks and the lighthouse, and there is also a mikoshi from Itsukushima Shrine, a dragon god dance and a big Shirahama Ondo bon dance.
Sources
- OfficialChiba Tourism Navi (Chiba Prefectural Tourism and Products Association) maruchiba.jp
- OfficialMinamiboso Shirahama Ama Festival Executive Committee amamatsuri.com
- OfficialMinamiboso Tourism Association www.mboso-etoko.jp
Last checked: Oct 11, 2026. Event information is based on official announcements, but changes may not always be reflected here. Please check each official website for accurate details.
Other events this month
On the day, see what locals are murmuring on the murmur map
murmur is an app that shows short, anonymous posts on a map, right where they were written. On festival day, open the map around the venue and see what people nearby are saying.