Other facts from our historical weather data: When is the rainy season in Sacred Valley? Rainy season in Sacred Valley occurs in the months of January, February, March, November and December. Which is the warmest month in Sacred Valley? November has an average maximum temperature of 15°C (59°F) and is the warmest month of the year. Which is the coldest month in Sacred Valley? The coldest month is July with an average maximum temperature of 13°C (55°F). Which is the wettest month in Sacred Valley? February tops the wettest month list with 261mm (10.3 in) of rainfall. Which is the driest month in Sacred Valley? July is the driest month with 28mm (1.1 in) of precipitation. Which is the sunniest month in Sacred Valley? July is the sunniest month with an average of 257 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.