December in Ocho Rios is the coldest month of the year. In December, the weather in Ocho Rios is typically warm. Average daily high temperature in December is about 25 degrees above zero. On average, Ocho Rios has 18 rainy and 13 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 Ocho Rios.