In December, the weather in Al Diwaniyah is typically warm. Average daily high temperature in December is about 20 degrees above zero. On average, Al Diwaniyah has 19 sunny, 8 partly cloudy, 3 rainy, and 1 cloudy day in December. The rains are usually light. December as well as February, March, and November is considered the most comfortable time to visit Al Diwaniyah.