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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?
A boy jumps into Lake Geneva at sunset from a platform off the village of Lutry, western Switzerland on August 9th 2020. Switzerland is set for another hot week. (Photo by Fabrice COFFRINI / AFP)

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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WEATHER

‘Don’t sleep naked’: How to get a good night’s sleep in a Swiss heatwave

As temperatures climb again, many people may struggle to get a good night's sleep in Switzerland. Here are some expert tips to help you even when it's sweltering hot.

‘Don’t sleep naked’: How to get a good night’s sleep in a Swiss heatwave

Switzerland’s summers tend to get hotter and this season has seen its share of heatwaves, bringing temperatures closer to 40C and making it almost impossible to sleep.

This could mean trouble for residents of a country better prepared to bear the cold weather than the extreme heat.

The Swiss Federal Office of Public Health (FOPH) has three ‘golden rules’ for how to make it through heatwaves; avoid exercise during the hottest part of the day, keep the heat out of your house however you can, drink and eat smart (fresh foods and lots of water).

With night temperatures in some regions above 20C, Swiss residents will also need some help getting through the night.

Here are a few tips to keep cool overnight and enjoy better sleep despite the heat of the night.

Don’t sleep naked

It’s tempting to ditch the PJs when it’s this warm overnight. But sleep experts say this is a mistake, as any moisture from sweat accumulates on your body.

Cotton pyjamas and cotton sheets are very effective in absorbing and removing sweat from your body.

Give a little help to your internal clock

Many people think that it is only the extreme heat in summer making your sleep seem a bit worse than in the colder months. But the fact that days are brighter for longer makes a huge difference.

READ ALSO: How Switzerland’s largest cities are combating the heat

As light suppresses our body’s production of melatonin, the hormone that signals that it is time to sleep, the longer days irritate our internal clock, according to sleep experts.

The old tip of turning off your devices to avoid the blue light is also extra crucial. So around one hour before going to bed, you can start your “darkening” ritual throughout your home.

In that sense, it’s also better to avoid naps during the day to keep a better sleep routine.

Try to cool your room and yourself

Of course, the cooler temperatures are in your bedroom when you go to sleep, the better. You can help get temperatures a few degrees down by following these tips: keep the blinds and windows shut during the worst of the day and ventilate the cooler night breeze during the night.

Sleeping during a heatwave can be difficult. Photo: Yuris Alhumaydy / Unsplash

You can also moisten your curtains just before bedtime and leave the window open; the water evaporation will make it a bit cooler. If you can, another tip is to put your mattress on the floor as hot air rises – excellent advice for those sleeping on a bunk bed.

Don’t forget to turn off (and unplug!) electrical appliances, as those are heat sources.

READ ALSO: Eight great swimming spots to escape the Swiss summer heat

To cool yourself, you could take a lukewarm evening shower (not a hot one, those will make your body react by generating heat).

Fans and humidity help

As long as you’ve kept your room relatively cool, fans work. They help evaporate sweat which, in turn, helps your body regulate its temperature.

Putting a bowl of ice in front of the fan can also help cool the room.

Some people swear by dampening their sheets before going to bed. But if you’re not used to it, the feeling can be a little disconcerting. You can also place multiple ice containers in the corners of your room, which will melt slowly overnight and cool the air.

Why is it essential to have a good night’s sleep?

Several days of scorching temperatures can cause heat stress, according to the Swiss Tropical and Public Health Institute.

If the nights are not cool enough, the body can’t recover from the heat of the day, creating a dangerous condition called “thermal stress”, which can be fatal for the elderly and other vulnerable people.

While there are no statistics showing how many people have fallen victim to heat stress during the most recent heatwave, several cantons have implemented a system of home visits and frequent phone contact with this at-risk group.

READ MORE: How to keep your cool during Switzerland’s heatwave

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