December in Necochea is the sunniest month of the year. In December, the weather in Necochea is typically warm. Average daily high temperature in December is about 25 degrees above zero. On average, Necochea has 27 sunny, 3 partly cloudy, and 1 rainy day in December. The rains are usually light. December as well as January, February, and March is considered the most comfortable time to visit Necochea.