The first day of Rock in Rio 2026, this Friday, September 4th, will be marked by initially high temperatures, with sun appearing throughout the day. According to Climatempo, the sun should shine more intensely, even reaching a cloudless sky in the afternoon, with a minimum of 16°C in the morning and exceeding 30°C in the afternoon.
Despite the high temperatures, wind and breeze will be present, giving a thermal sensation of around 25°C. The sun is expected to set at 5:43 PM.
Even with the sun, it's necessary to bring a rain jacket, as there are chances of showers, even if light, in the late afternoon and during the night. The first day of the festival should have light rain, of maximum 0.4mm, during the afternoon and night, but should not be constant.
According to Climatempo, the entire first weekend of the festival should be marked by milder weather and rain on some days, with one of them expected to have rain practically all day long.
