July in Porto Velho is the sunniest month of the year. In July, the weather in Porto Velho is typically hot. Average daily high temperature in July is about 32 degrees above zero. On average, Porto Velho has 17 sunny, 12 partly cloudy, and 2 rainy days in July. The rains are usually light. July as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Porto Velho.