Other facts from our historical weather data: Which is the warmest month in San Valentino alla Muta? August has an average maximum temperature of 15°C (59°F) and is the warmest month of the year. Which is the coldest month in San Valentino alla Muta? The coldest month is January with an average maximum temperature of -6°C (21°F). Which is the wettest month in San Valentino alla Muta? June tops the wettest month list with 128mm (5 in) of rainfall. Which is the driest month in San Valentino alla Muta? February is the driest month with 64mm (2.5 in) of precipitation. 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.