Mera (Minamiboso)

Mera is an exposed reef break at the southern tip of Chiba (near Minamiboso) that typically requires substantial swell to work properly. Because it breaks directly over sharp rock and shallow reef sections, it’s best treated as an advanced-only spot where mistakes can be costly. Across sources, the spot is described as turning on with larger swells—especially from the south to southwest quadrant—and performing best around mid tide. Wave shape is generally reported as peeling, with rides often short and punchy due to the reef depth, and larger swells tending to hold better than many nearby sandy breaks, while also increasing danger from rocks. Wind is a key factor: northeast winds are commonly described as offshore and helpful for cleaner conditions, while the spot is reported to be messy with onshore winds. Wind direction guidance aligns with N/NE being favorable, though one provider rates wind reliability as low—another reason the spot can feel inconsistent. For safety and local conduct, sources emphasize protecting the fishing area (including avoiding the harbor entrance) and using protective footwear/gear. Hazards include sharp rocks and reef, sea urchins, and rip currents that can occur when swell increases. Lifeguards are not present, so plan for self-rescue/backup and consider surfing with others if you’re less confident.