Other facts from our historical weather data: When is winter in Argentera? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Argentera? August has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Argentera? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Argentera? June tops the wettest month list with 142mm (5.6 in) of rainfall. Which is the driest month in Argentera? February is the driest month with 72mm (2.8 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.