During a heatwave in Finland, the strain often comes from warm nights and rooms that do not cool down. Drink regularly, reduce exertion in the hottest hours, keep indoor spaces as cool as you can, and check how children, older adults, and medically fragile people are coping. The body often manages ordinary summer heat well enough for a day. Several hot days in a row are a different strain.
What matters most during a heatwave#
Heat illness often builds quietly. People eat less, drink too little, sleep poorly, and carry on with the same pace until dizziness, headache, weakness, or nausea finally becomes obvious. It is easier to prevent that slide than to reverse it late in the day.
Regular drinking usually works better than waiting for strong thirst. Cool rooms help more than repeated short spells outdoors in full sun. If the home is getting warm, blocking sunlight during the day and airing the home when outdoor air is cooler can make a real difference.
If sun exposure has also irritated the skin, sunburn: what to do first at home and when to seek care covers the skin side of the problem separately.
Who needs extra caution#
Heat is harder on some people than on others. Older adults may not feel thirst clearly enough. Small children heat up more quickly and may forget to drink when they are playing. During pregnancy, the whole body can feel more strained in hot weather. Long-term illnesses and several regular medicines can also make hot days harder to tolerate.
This is why checking the general pattern matters more than focusing on one number or one glass of water. Is the person more tired than usual, dizzier than usual, more swollen, more confused, or clearly drinking less than usual. Those changes matter.
Heat exhaustion and heat stroke are not the same thing#
Heat exhaustion often causes heavy sweating, weakness, dizziness, headache, nausea, and a washed-out feeling. The skin may feel clammy rather than dry. The right response is to move to a cooler place, loosen clothing, rest, and cool the body with water, a cool shower, or cool damp cloths while drinking if it is safe to do so.
Heat stroke is far more serious. Confusion, collapse, a very hot body, worsening consciousness, or a person who seems severely unwell in the heat is an emergency. At that point, the situation is no longer ordinary home care.
Medicines and indoor heat#
Some medicines can make heat harder to tolerate because they affect fluid balance, blood pressure, alertness, or sweating. This does not mean that regular medicines should be changed on your own. It means that unusual weakness, dizziness, or confusion during hot weather deserves a lower threshold for assessment.
Indoor overheating can also be more important than people expect in Finland, especially when nights stay warm and the body never really gets to cool down. If several hot days are forecast, slower routines and earlier cooling measures are usually more effective than trying to push through as normal.
When to seek care#
Seek care quickly if heat is linked to confusion, fainting, chest pain, shortness of breath, repeated vomiting, or clear dehydration. Call 112 if the person seems severely ill, has very hot dry skin with worsening drowsiness, collapses, or cannot be cooled and roused normally.
Seek care earlier rather than later if an older adult, a small child, or a person with a serious long-term illness is becoming weaker, drinking poorly, or coping clearly worse than usual during the heatwave.
Further reading and sources#
Further reading: