Other facts from our historical weather data: When is the rainy season in Stans? Rainy season in Stans occurs in the months of May, June, July, August and September. When is winter in Stans? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Stans? 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 Stans? The coldest month is January with an average maximum temperature of -0°C (32°F). Which is the wettest month in Stans? June tops the wettest month list with 217mm (8.5 in) of rainfall. Which is the driest month in Stans? January is the driest month with 95mm (3.7 in) of precipitation. Which is the sunniest month in Stans? 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.