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WEATHER

Heatwave: Why is it so hot in Switzerland right now?

Not so long ago we complained about the cold and rainy weather in Switzerland, wishing for sunnier and warmer days. Our wish has come true — but why exactly is it so hot and what can we expect for the coming weeks?

Heatwave: Why is it so hot in Switzerland right now?
Hopefully you are fit enough to do this. Photo by Fabrice COFFRINI / AFP

The temps have reached high 20s across much of Switzerland in the past days, but the best (or the worst, depending on who you ask) is yet to come: meteorologists forecast the high of 32 degrees for Friday.

“The current heat wave is relatively extreme for a month of May”, meteorologist Joshua Gehring from official weather service MeteoSwiss said in an interview with Watson news platform.

Why is it so unseasonably hot right now?

One reason should come as no surprise to anyone: “What we are currently experiencing, that is to say a relatively early heat wave, is a direct consequence of climate change”, Gehring noted.

READ MORE: EXPLAINED: How the climate crisis is hitting Europe hard

Specifically, a phenomenon called “heat dome” is hovering over Europe. It is, according to Gehring, “a stagnant anticyclone that acts as a lid to accumulate and retain heat”.

This is pretty much what happens when you put a lid over a boiling pot — the heat therein is captured and can’t escape.

What can we expect for next week?

The forecast calls for the heat wave to end from the beginning of next week, with more seasonal, 20-degree-plus temperatures expected throughout the country.

This is what the forecast looks like for Tuesday:

MeteoSwiss screenshot

What can you do in the meantime to cool down?

Indoor air-conditioning is rare in Switzerland, but keeping cool is easier outdoors.

For instance, the abundance of lakes and rivers in Switzerland provides a welcome relief on hot days.

And if you like swimming pools, the good news is (at least during a heat wave) that some are turning off heating to boycott Russian gas, so you could have a nice, cool swim.

READ MORE: Swiss pools go cold in boycott of Russian gas

Also, most public fountains in Switzerland spout cold water you can drink and splash yourself with.

If all else falls, head for the glaciers (while they last). 
 

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WEATHER

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.
 

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