Other facts from our historical weather data: Which is the warmest month in Sollières-Sardières? August has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Sollières-Sardières? The coldest month is January with an average maximum temperature of -5°C (23°F). Which is the wettest month in Sollières-Sardières? November tops the wettest month list with 128mm (5 in) of rainfall. Which is the driest month in Sollières-Sardières? August is the driest month with 83mm (3.3 in) of precipitation. Which is the sunniest month in Sollières-Sardières? 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.