Japan
Chiba
Certified Beach Town
Sanmu
Sanmu's beaches
- Certified since 2025
Field notes — quick answers
Does Sanmu have Blue Flag beaches?
Yes — we map 1 beach in Sanmu holding Blue Flag certification for the seasons we track, each listed with its certification year. Certification is seasonal and re-awarded every year.
Where is Sanmu?
Sanmu is a beach town in Chiba, Japan. Its beaches are on the interactive map alongside every other town we track.