In December, the weather in Copán Ruinas is typically warm. Average daily high temperature in December is about 24 degrees above zero. On average, Copán Ruinas has 21 rainy, 5 cloudy, 3 partly cloudy, and 2 sunny days in December. The rains are usually heavy. December as well as May, June, July, and August is considered the most uncomfortable time to visit Copán Ruinas.