January in Alghero is the windiest and the cloudiest month of the year. In January, the weather in Alghero is typically warm. Average daily high temperature in January is about 12 degrees above zero. On average, Alghero has 13 partly cloudy, 10 sunny, 7 rainy, and 1 cloudy day in January. The rains are usually moderate. January as well as February is considered the most uncomfortable time to visit Alghero.