Temperatures reached 36.7°C in the city of Geneva on Wednesday, slightly down on the previous day.
An increasing number of local and regional authorities have announced a ban on open fires and fireworks near forests as a precautionary measure.
Water levels in several rivers and lakes have dropped low as experts warn of a serious risk for fish and reptiles.
The authorities in the mountain resort of Nendaz decided to refill a mountain lake situated at more than 2,200m above sea level. The Tracouet LakeExternal link is home to a large population of amphibians and exceptional alpine flora.
The River Aare, popular with swimmers in the Swiss capital, Bern, reached a record 23.9°C.
Thunderstorms and hail, notably in the Bernese Oberland region and in western Switzerland, brought temporary relief, but temperatures are expected to remain high.
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In many parts of the world people are increasingly suffering from intense heat. How do you cope with the rising temperatures?
In Switzerland more people are being referred to electrical therapies or psychedelic-assisted psychotherapy. Are there similar approaches where you live?
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