Rio de Janeiro Hits 40.1°C on Christmas as Heat Protocol Stays at Calor 3

Overview

• The Alerta Rio network measured a municipal high of 40.1°C at the Guaratiba station, the city’s hottest day since October 6.
• Rio has been at Calor 3 since December 24, the third of five heat levels that signals sustained highs near 36–40°C for at least three days.
• The state health department issued an alert to all 92 municipalities, asking for public hydration points and thermal refuges and highlighting risks to the elderly, children, bedridden people and outdoor workers.
• UPAs are available as year-round public hydration sites, and officials advise frequent water intake, light clothing, shade and avoiding peak sun exposure.
• Forecasts call for continued hot, dry weather without rain, with 40°C possible again on Friday and Sunday, as crowded beaches persisted and Inea flagged 15 shoreline points as unsuitable for bathing.