Heatwave warning sounded for Switzerland

A heatwave is rolling over much of Switzerland this week with temperatures set to rise up to 37 degrees in areas such as the canton of Valais by the end of the week, weather forecasters say.

Heatwave warning sounded for Switzerland
Photo: Lykaestria

The cities of Zurich, Basel, Aarau and Schaffhausen are expected to see temperatures hitting highs of 31 degrees on Monday, along with Sion in the canton of Valais, according to Meteonews.

The mercury should climb to highs of 30 degrees in Geneva at the western extremity of the country and in Chur, to the east, in the canton of Graubunden, and in Lugano in the canton of Ticino, Meteonews said.

But it will become even warmer toward the end of the week, with seasonal records for heat to be tested in some regions.

The highs for Sion are forecast to reach 35 degrees on Friday and 37 on Saturday.

Mixed into the picture is the likelihood of thunderstorms on Wednesday, with the possibility of hail in some regions.

An anti-cyclone centred in the northwest of Europe is influencing the weather in Switzerland and other countries, such as France, where warnings have gone out to people vulnerable to the heat, especially the elderly and small children.

The warm weather is expected to continue into next week.

Member comments

Log in here to leave a comment.
Become a Member to leave a comment.
For members


What’s next after Switzerland’s ‘extremely worrying’ heatwave?

Switzerland hit record high temperatures for June for the first time in 75 years on Sunday but what's the forecast for the coming days and weeks?

What's next after Switzerland's 'extremely worrying' heatwave?

With 36.9C recorded in Beznau, in the canton of Aargau on Sunday, Switzerland equalled the high temperature record held by Basel since 1947.

Other Swiss towns experienced sweltering temperatures as well: In Neuchâtel the mercury rose to 36.5C, in Sion it hit 36.4C and  in Lausanne it was 32.6C, according to MeteoNews.

Temperatures were decidedly more pleasant at high altitudes in the mountains: the temperature of 16.9C was recorded at 2,900 metres in the shade on the Diablerets glacier.

Whilst lower down at the Moléson in Fribourg, which stands at 2,000 metres, a more seasonal 24 degrees was recorded.

Like its neighbours, “Switzerland is not immune to brief and extreme phenomena”, climatologist Martin Beniston, honorary professor at the University of Geneva, said in an interview with Tribune de Genève.

And if high temperatures continue — as they are forecast for next days — “the very dry ground will reinforce the warming, it is a vicious circle”, said Vincent Devantay, meteorologist from MeteoNews.

This means higher risk of fires, especially in the forest. “They have really dried up compared to last year. The lack of rain is becoming extremely worrying”, he pointed out.

Thunderstorms are predicted in parts of Switzerland towards the end of the week but they will not necessarily prevent the drought, Beniston said.

What the soil needs are “gentle showers, repeated, for two to three weeks”, rather than occasional heavy thunderstorms that don’t provide enough moisture for the earth’s deeper layers.

Continued rains are not expected in the immediate future and  forecasts for the summer months predict more intense heatwaves.

READ MORE: How this week’s heatwave will hit Switzerland and how to stay cool

What are the consequences of the heatwave and no rain?

As The Local already reported, Swiss glaciers are now melting faster than usual, partly due to the early heat wave in May.
READ MORE: Why Switzerland’s glaciers are melting faster than usual this summer

But there is more.

Hydrologist Massimiliano Zappa, also warns that current very high temperatures and no rain could speed up the drought across Switzerland, especially as Swiss rivers and streams “have a lower flow than the average of previous years”.

Water rationing could become inevitable, he said.

 “In Spain and southern Italy, for example, people know how to get by with little water, because they have been educated to meet their daily needs with less. But this is not part of Swiss mentality”, Zappa said.

The heat wave could also impact railway installations as well as electronic devices, according to Le Temps newspaper.

“Overheated smartphones, expanding rails, and computer fans running at full speed: high temperatures put a strain on infrastructure and our everyday objects, while requiring more energy”, Le Temps said.