Other facts from our historical weather data: Which months have the greatest rainfall in Susa? Most rainfall (rainy season) is seen in May and June. When is winter in Susa? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Susa? July has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Susa? The coldest month is January with an average maximum temperature of -2°C (28°F). Which is the wettest month in Susa? June tops the wettest month list with 163mm (6.4 in) of rainfall. Which is the driest month in Susa? February is the driest month with 80mm (3.1 in) of precipitation. Which is the sunniest month in Susa? July is the sunniest month with an average of 260 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.