July in Treinta y Tres is the rainiest and the coldest month of the year. In July, the weather in Treinta y Tres is typically warm. Average daily high temperature in July is about 15 degrees above zero. On average, Treinta y Tres has 12 sunny, 11 partly cloudy, 7 rainy, and 1 cloudy day in July. The rains are usually heavy. July as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most uncomfortable time to visit Treinta y Tres.