January in San Isidro de El General is the windiest and the coldest month of the year. In January, the weather in San Isidro de El General is typically warm. Average daily high temperature in January is about 21 degrees above zero. On average, San Isidro de El General has 23 rainy, 6 sunny, and 2 partly cloudy days in January. The rains are usually light. January as well as February, March, April, and May is considered the most uncomfortable time to visit San Isidro de El General.