Other facts from our historical weather data: When is the rainy season in Gattererberg? Rainy season in Gattererberg occurs in the months of May, June, July and August. When is winter in Gattererberg? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Gattererberg? July has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Gattererberg? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Gattererberg? June tops the wettest month list with 210mm (8.3 in) of rainfall. Which is the driest month in Gattererberg? January is the driest month with 91mm (3.6 in) of precipitation. Which is the sunniest month in Gattererberg? 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.