Owing to thermal springs, the picturesque Wörthersee is one of the warmer lakes in the region and among the best for swimming, frolicking on the lakeshore or whizzing across the waters in pursuit of sport. The average water temperature between June and September is 21°C, but in a hot year it can climb to 27°C. The lake stretches from west to east between Velden and Klagenfurt. The southern shore is the most picturesque, but the northern shore has the best transport access and is the busiest section. The website for lakeside towns is www.woerthersee.com.