Temperatures in spring and fall are usually milder, making it a great time to visit. Winter sports are a major draw to the resort towns in the Austrian Alps, and the skiing is consistently ranked as some of the best in the world. The season lasts from December through late March. Vienna and Salzburg tend to be more crowded in July and August, and during major festivals. Temperatures vary by region and elevation, but averages do not climb above a comfortable high 70s in Vienna during summer.