Hévíz Thermal Lake

What it is

Hévíz lake is, according to its spa, the largest natural thermal lake in the world with a biologically active peat-mud bed. It covers 4.4 hectares and is fed by a spring 38 metres deep that supplies 410 litres per second, so the water is completely renewed every three days. You bathe outdoors, among water lilies in summer and in steam in winter, when the water stays warm (26 degrees in mid-November 2026) against the cold air. The lake is deep in the centre: many bathers bring a float.

Winter opening hours

• From 25 October 2026 to 14 February 2027: opens at 9:00, bathing until 16:00 and doors until 16:30.
• From 15 February to 21 March 2027: bathing until 17:00.
• On 24 December it closes at 14:00, on the 31st at 16:00 and on 1 January it opens at 11:00.

From 2 November 2026 to 21 March 2027 entry is only through the Festetics Fürdőház and you can only swim outdoors: the central building of the lake is closed.

Prices (from 2 November 2026)

• 2 hours: 3,000 Ft; over-60s and students from age 14, 2,500 Ft; children aged 6 to 14, 1,500 Ft; under-6s, free.
• 2 hours with wellness: 5,000 Ft. The sauna and wellness area are only for ages 12 and over.
• Extra hour, once per ticket: 1,500 Ft. Every half hour over the time, 1,000 Ft.

Getting there

Dr. Schulhof Vilmos sétány 1, in the centre of Hévíz. Buy online at jegy.spaheviz.hu.