January in Beirut is the rainiest, the windiest, the cloudiest, and the coldest month of the year. In January, the weather in Beirut is typically warm. Average daily high temperature in January is about 12 degrees above zero. On average, Beirut has 19 sunny, 7 partly cloudy, and 5 rainy days in January. The rains are usually moderate. January as well as February is considered the most uncomfortable time to visit Beirut.