Seasonal· San Blas· Mexico

San Blas Jejenes (No-See-Ums)

21° 32.4′ N · 105° 17.3′ W · approximate

San Blas is notorious for jejenes, the tiny biting no-see-ums that have plagued the port since Spanish naval officers complained of its 'bad air'. They are the main reason many cruisers anchor well offshore at Matanchén.

Practical

Noonsite: they can be extremely fierce, especially just after the full and new moon. Carry plenty of repellent and coils, and fit fine screens on all hatches. Guidebooks recommend anchoring about a mile off the beach at Matanchén, and staying aboard at dusk helps. They are worst near the mangroves and the estuary. Coordinate is nominal (San Blas town).

Best for

Planning your anchorage and moon timing

Season

Worst around full and new moon; especially at dusk

Nearby