Planning for the weather is a good way to make your trip to Lech am Arlberg relaxing and enjoyable, especially when you're splurging. The hottest months are usually August and July, with an average temperature of 11°C, while the coldest months are January and February, with an average of -5°C. The snowiest months in Lech am Arlberg are April, May, November and January, with each month seeing an average of 13 cm of snowfall.