March in Ostrog is the rainiest month of the year. In March, the weather in Ostrog is typically cold. Average daily high temperature in March is about 5 degrees above zero. On average, Ostrog has 14 rainy, 10 cloudy, 5 sunny, and 2 partly cloudy days in March. The rains are usually light. March as well as February, April, November, and December is considered the most uncomfortable time to visit Ostrog.