The climate of Austria can be described as typical European continental influenced climate with warm, dry summers and fairly cold winters. January is the coldest month with daytime temperatures usually around zero, but in some cases winter months can be very cold with temperatures far below zero.
In summer daytime temperatures reach 25°C, but sometimes quite higher, 30°C or more. In most of the time it is dry weather with sunny spells, although sometimes heavy thunderstorms can occur at the end of the day. July is the warmest month with an average temperature of 22°C. The number of hours of sunshine averages between 1900 and 2500 a year - among the highest in Europe.
Although it can be pretty wet in April and May, spring is just glorious throughout Austria. Generally, the weather is best May-September, when days are warm and the nights are cool, although it rains more in spring than in summer. Summer is warm, sunny and long: holiday resorts can get very crowded in late July and August.
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Lightweight cottons and linens during summer months; an umbrella or raincoat is advised for local showers. Warmer clothing and rainwear are needed during the winter months. A sweater may be needed throughout the year in the evenings or for trekking in the mountains, even in the summer.
The following items should be kept with you at all times during your journey to Austria: your personal documents (passport, ticket, boarding pass). Carry these documents in your hand luggage so that they are easily accessible: buying a small document travel pouch is a good idea.