Other facts from our historical weather data: Which months have the greatest rainfall in Vandans? Most rainfall (rainy season) is seen in May, June, July and August. When is winter in Vandans? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Vandans? 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 Vandans? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Vandans? June tops the wettest month list with 209mm (8.2 in) of rainfall. Which is the driest month in Vandans? January is the driest month with 115mm (4.5 in) of precipitation. Which is the sunniest month in Vandans? July is the sunniest month with an average of 192 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.