Other facts from our historical weather data: Which months have the greatest rainfall in Vallée dʼOr? Most rainfall (rainy season) is seen in August, September, October and November. Which is the warmest month in Vallée dʼOr? September has an average maximum temperature of 29°C (84°F) and is the warmest month of the year. Which is the coldest month in Vallée dʼOr? The coldest month is February with an average maximum temperature of 27°C (81°F). Which is the wettest month in Vallée dʼOr? October tops the wettest month list with 174mm (6.9 in) of rainfall. Which is the driest month in Vallée dʼOr? March is the driest month with 55mm (2.2 in) of precipitation. Which is the sunniest month in Vallée dʼOr? August is the sunniest month with an average of 248 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.