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a city in Hungary, in the megye (county) of Somogy, on the south shore of Lake Balaton, at the place where the Sió River flows into the lake. Population, 15,000 (1972). One of the centers of the Balaton resort region, Siófok has a moderate continental climate: summers are warm, with an average July temperature of 22°C; autumns are sunny; and winters are mild, with an average January temperature of –2°C. Precipitation totals about 700 mm annually.
Siófok has a fine-sand beach. There are houses of rest, hotels, and motels in the city. The season in Siófok lasts from April to September.