January in Oswiecim is the snowiest and the coldest month of the year. In January, the weather in Oswiecim is typically freezing. Average daily high temperature in January is about zero. On average, Oswiecim has 10 cloudy, 8 partly cloudy, 6 rainy, 4 sunny, and 3 snowy days in January. The rains are usually moderate. January as well as February, March, April, and May is considered the most uncomfortable time to visit Oswiecim.