high season: May to September, December to mid--March
shoulder season: mid-March to April, October to November
Weather InformationAustria has a temperate climate with four seasons, although regions with higher altitude vary. In general, Austria has dry, hot summers with temperatures reaching up to 95 degrees, and moderately cold winters. The alpine regions see high precipitation with considerable amounts of snow during mid-December through mid-March.
Crowd InformationThe biggest crowds gather in cities June through August and at ski resorts January through February. Salzburg pretty much shuts down due to crowds during the Salzburg Festival in July and August.
Closure InformationShops are closed on Sundays year-round and on major holidays such as Easter, Christmas, and New Year's. Hotels and venues don't close on a regular basis. Most museums in Vienna are closed on Mondays.
When to SaveThe cheapest time to go is during February through mid-May and late September through mid-December when airfares are lower. Airfares tend to be highest from June through mid-September, as well as over the Christmas and New Year's holidays. Accommodations prices increase a bit during these times, too, but not as significantly as airfare.
When to BookIn general, for the best availability, book six to eight months in advance for travel from June through August and the Christmas and New Year's holidays.
Information provided by the Austrian National Tourist Office