May in San José del Guaviare is the rainiest month of the year. In May, the weather in San José del Guaviare is typically warm. Average daily high temperature in May is about 26 degrees above zero. On average, San José del Guaviare has 31 rainy days in May. The rains are usually heavy. May as well as March, April, June, and July is considered the most uncomfortable time to visit San José del Guaviare.