July in Ushuaia is the coldest month of the year. In July, the weather in Ushuaia is typically cold. Average daily high temperature in July is about 1 degree above zero. On average, Ushuaia has 17 rainy, 7 cloudy, 6 snowy, and 1 sunny day in July. The rains are usually light. July as well as January, February, March, and April is considered the most uncomfortable time to visit Ushuaia.