December in Nica is the rainiest and the windiest month of the year. In December, the weather in Nica is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Nica has 28 rainy, 2 sunny, and 1 cloudy day in December. The rains are usually heavy. December as well as March, October, and November is considered the most uncomfortable time to visit Nica.