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Japan
Chiba

Certified Beach Town

Sanmu

See Sanmu on the map
1
Beaches mapped
1
Certified 2026

Sanmu's beaches

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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.