Other facts from our historical weather data: When is the rainy season in Innsbruck? Rainy season in Innsbruck occurs in the months of May, June, July, August and September. When is winter in Innsbruck? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Innsbruck? 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 Innsbruck? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Innsbruck? August tops the wettest month list with 223mm (8.8 in) of rainfall. Which is the driest month in Innsbruck? January is the driest month with 89mm (3.5 in) of precipitation. Which is the sunniest month in Innsbruck? July is the sunniest month with an average of 230 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.