Planning for the weather is a good way to make your trip to Trento relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 18°C, while the coldest months are January and February, with an average of 3°C. The rainiest months in Trento are May, November, July and June, with each month seeing an average of 202 mm of rainfall.