If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Vandoies: The hottest months are usually July and August, with an average temperature of 10°C, while the coldest months are January and February, with an average of -6°C. The rainiest months in Vandoies are August, July, June and May, with each month seeing an average of 242 mm of rainfall.