January weather forecast in Belfast

January in Belfast is the windiest and the cloudiest month of the year. In January, the weather in Belfast is typically cold. Average daily high temperature in January is about 7 degrees above zero. On average, Belfast has 19 rainy, 7 cloudy, 3 sunny, and 2 partly cloudy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Belfast.