Other facts from our historical weather data: Does Shiraz have a dry season? Yes, the months of May, June, July, August, September and October are very dry. Which is the warmest month in Shiraz? July has an average maximum temperature of 37°C (99°F) and is the warmest month of the year. Which is the coldest month in Shiraz? The coldest month is January with an average maximum temperature of 11°C (52°F). Which is the wettest month in Shiraz? January tops the wettest month list with 91mm (3.6 in) of rainfall. Which is the driest month in Shiraz? September is the driest month with 0mm (0 in) of precipitation. Which is the sunniest month in Shiraz? June is the sunniest month with an average of 361 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.