Hot summer weather

Summer heat

Summer temperatures are here! Please find below some information and recommendations for use during heatwaves.


Recommendations :

  • Drink regularly, even if you're not thirsty: prefer water and low-sugar tea to sugary drinks. Adjust your diet

Warning: Do not eat or drink at your workstation if it involves chemical, biological or radioactive contamination. You should therefore drink or eat in a separate room, after hand hygiene.

  • Wear light-colored, lightweight clothing, preferably cotton, to help evaporation of sweat. Protect your head from the sun (helmet, cap, hat, etc.).
  • Adapt your work rhythm and take more frequent breaks.
  • Reduce or postpone intense physical effort and postpone arduous tasks until the cooler hours of the day.
  • Stop working when you feel dizzy, lightheaded or very tired. These symptoms may indicate heatstroke.
  • Immediately report any abnormal behavior on the part of a colleague to the first-aid attendant and his/her supervisor.
  • Take extra care if you are taking medication or have recently been ill.
  • Do not consume alcoholic beverages or drugs.
  • Indoors
    • If possible, open windows during the night (as long as safety and security principles are respected), or at the latest in the early morning.
    • Close windows and blinds during the day.
    • Encourage air movement.
  • Outdoors:
    • Avoid exposure to sunlight as far as possible
    • Cover your head
    • Wear sunglasses with UV protection
    • Use protective sun cream
    • Wear clothing that covers or protects against UV rays
    • Avoid heavy work in the afternoon (heat and ozone peak)

A few facts about risks

Health risks


Sunburn Redness and pain, swelling, blisters, fever, headache
Heat cramps Painful spasms (legs and abdomen), sweating
Exhaustion Heavy sweating, weakness, cold and pale skin, weak pulse, normal body temperature.

Vital emergencies 

Heat stroke

Body temperature over 40°C, dry, hot skin, rapid, strong pulse, headache, nausea and vomiting, possible loss of consciousness, convulsions
Death possible due to thermoregulatory failure


Heat stroke: What to do?

  • Alert or have alerted the emergency services: 115 for the Dorigny university site (or 021 692 20 00) or 144 elsewhere.
  • Cool down: Take the person to a cool place, lay them down and cool them down by wrapping them in a cool, damp sheet or by applying a towel moistened with cold water to their face and body.
    • If she is conscious, give her fresh water often and in small quantities to avoid dehydration.
    • If she's unconscious, put her in the lateral position and wait for help.

In all cases, even if the victim's condition improves rapidly, it is advisable to consult a doctor, especially if the victim is a child.

Fill a small spray bottle with fresh water and spray your face and arms.
For reasons of hygiene, change the water and clean your spray regularly.

You can also wet a cotton scarf completely and wear it around your neck.


Usefull links:

Federal Office of Public Health (FOPH) : Heat

Canton de Vaud (in French) : hot weather plan

Meteo suisse :


Annexe Mouline  -  CH-1015 Lausanne
Tél. +41 21 692 25 70
Fax +41 21 692 25 75