In March, the weather in Iwonicz-Zdroj is typically cold. Average daily high temperature in March is about 6 degrees above zero. On average, Iwonicz-Zdroj has 15 rainy, 8 cloudy, 6 sunny, and 2 partly cloudy days in March. The rains are usually light. March as well as February, April, May, and November is considered the most uncomfortable time to visit Iwonicz-Zdroj.