The average temperature in Rio De Janeiro in June is really warm at 21.5 °C (70.7 °F). Afternoons can be fairly hot with average high temperatures reaching 25.2 °C (77.4 °F). Overnight temperatures are generally somewhat warm with an average low of 18.7 °C (65.7 °F). The mean daily temperature variation/ range in June is 6.5 °C (11.7 °F). The weather in June is dryish with sporadic rain. Just 80.4mm (3.2in) of water is unloaded across an average of 7 days. The blue above Rio De Janeiro is reasonably fine with an average of a moderate 6:05 of glaring sunshine daily. The shortest day is 10:43 long and the longest day is 10:48 long with an average length of 10:44.