Other facts from our historical weather data: When is winter in Vallarga? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Vallarga? July has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Vallarga? The coldest month is January with an average maximum temperature of -2°C (28°F). Which is the wettest month in Vallarga? June tops the wettest month list with 140mm (5.5 in) of rainfall. Which is the driest month in Vallarga? January is the driest month with 58mm (2.3 in) of precipitation. Which is the sunniest month in Vallarga? May is the sunniest month with an average of 185 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.