In December, the weather in Bandar-e Mahshahr is typically warm. Average daily high temperature in December is about 20 degrees above zero. On average, Bandar-e Mahshahr has 28 sunny, 2 partly cloudy, and 1 rainy day in December. The rains are usually light. December as well as February, March, and November is considered the most comfortable time to visit Bandar-e Mahshahr.