COP30 Opens in Belém as Intense Heat Overwhelms Cooling, Prompting Dress-Code Shift

Overview

• Temperatures near 33°C were reported in Belém on opening day, according to Climatempo.
• Air-conditioning in the Blue Zone proved insufficient, leading to widespread use of handheld fans distributed at country pavilions such as Portugal.
• The UNFCCC waived suits and ties and recommended a flexible “esporte fino” dress code to keep negotiations comfortable.
• Delegates and local workers described the heat as excessive, including one attendee who removed a suit after five minutes and a technician noting the conditions feel unusually hot.
• Venue rules permit only empty, non‑glass water bottles for refilling inside, with guidance to carry a light layer due to chilly indoor air-conditioning.