What to wear to Barranquilla Carnival: Barranquilla sits at 33°C (91°F) by day and 24°C (75°F) at night in February, on city streets, with a low chance of rain. That means loose natural fabrics and real sun protection, cushioned trainers or a low boot, and a bag small enough for the gate rules. The crowd leans carnival, parade and costume, so a full costume is the norm rather than the exception.
Women's outfits at Barranquilla Carnival have to clear the same three hurdles as everyone else's. 33°C (91°F) by day, 24°C (75°F) at night, city streets underfoot, with more options for solving them.
The dominant aesthetics at Barranquilla Carnival are carnival costume, parade, full costume and tropical. That is the visual language of the site, the stages, the merch, the crowd photos, and outfits that speak it look intentional rather than borrowed.
This is a costume festival, and that changes the maths: turning up in normal clothes is the conspicuous choice. Budget for one full look rather than three half-hearted ones, and make sure you can walk, dance and queue in it for eight hours.
What people actually wear: as little fabric as the venue allows, in natural fibres, with a bag small enough to forget about; something identifiable, a colour, a hat, a flag, so your group can find you in a crowd of that size.