July in Puerto Carreno is the rainiest and the coldest month of the year. In July, the weather in Puerto Carreno is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Puerto Carreno has 30 rainy and 1 cloudy day in July. The rains are usually heavy. July as well as April, May, June, and August is considered the most uncomfortable time to visit Puerto Carreno.