Overview

• Rio de Janeiro activated Level 2 of its Heat Protocol after a 40°C maximum in Guaratiba, according to the city’s operations center.
• São Paulo recorded its hottest day of 2025 at 35.1°C at Mirante de Santana as authorities flagged very low humidity earlier in the day.
• State and municipal civil defense agencies forecast heavy rain, strong winds and hail potential from Tuesday to Friday, citing risks of flooding, landslides and fallen trees.
• In Baixada Santista, Santos’ civil defense warned of gusts up to 80 km/h and advised residents to avoid flooded areas and call 199 or 193 in emergencies.
• Inmet’s orange alert for temperature drop covers parts of eight states, with forecasts showing São Paulo’s highs falling to about 22°C on Tuesday and near 16°C on Wednesday.