Sleep With Open Window At Night?

Season, noise, pollen pollution – when it comes to the question of whether the bedroom window should be open at night or not, several factors play a role.

At night, even in the dead of winter, one of them leaves the window wide open because he thinks that the hardship is good and healthy. The other fears that even the morning chirping of birds could affect his slumber and makes the Scots tight even in midsummer.

Open or closed? For many people this is a question of faith – which has no clear answer, as it is often the case with questions of faith. As long as you get along well with it and feel fit in the morning, you can actually do everything while you sleep.


However, if someone wakes up in the morning often bruised and tired during the day, then he should ask why this could be. Many causes can disturb sleep. There may also be reasons behind this, which the window position has an influence on – such as the temperature and the noise level.

Bedroom temperature affects sleep

A widespread notion is that sleeping in freezing cold helps the immune system on the jumps and thus protect against diseases. Keyword hardening. Scientifically, there are no clues. The fact that it cures to let the windows open at night, when it is snowing outside, is therefore a myth and actually brings only one thing with it: higher heating costs. Plus, it’s bad to sleep when you’re cold.

However, even an overheated room affects the night’s sleep. On warm summer nights, many people sleep better when the windows are open. Because at night the air cools down and that should be used at your advantage. It is best to darken the bedroom in the summer during the day and keep the windows closed so that the room doesn’t get too hot. Ventilation should be done in the evening, but only if the outside temperature is actually below the internal temperature. It’s easy to misjudge, because the same temperature often feels warmer indoors than outdoors.

My tip: two thermometers, one in the apartment and one outside.

In principle, many experts recommend that the temperature in the bedroom should be between 16 and 18 degrees. My sleep doctor is rather reserved with such fixed figures. Ideal is the room temperature, where you neither sweat nor freeze. How many degrees these are is individually different and depends on factors such as bedding and sleeping clothes.

Disadvantage: Pollen gets into the bedroom through an open window

Something can come in with fresh air that causes problems for many people: pollen, the cause of hay-fever. During the pollen season, it makes sense for pollen allergy sufferers to close the windows and doors. That reduces the pollen load in your own four walls.

When airing people with hay-fever should pay attention to the time of day. In the country, the allergen density is highest in the morning and decreases in the evening. Ventilate here in the evening. In the city it is the other way around: In the morning, only a few pollen fly through the air. There better open the windows in the morning. Allergy sufferers may additionally attach a pollen grid to the window to protect themselves. Patients should discuss in advance with the doctor, when this measure and possibly others are useful.

Nocturnal noises disturb sleep

In addition to pollen, you should also note the noise that potentially enters the bedroom. Even occasional loud noises such as now and then passing cars can significantly affect the nocturnal slumber. You do not even have to consciously notice the noise-related recovery phases. Nevertheless, they lead to adrenaline release, blood pressure and pulse rise – and thus to a less restful sleep.

In particular, those who wake up easily through nocturnal noise should therefore close the bedroom window as a precaution. Important: Ventilate thoroughly before going to bed. So even with closed windows at night there is enough “fresh air” in the room. Because a certain air circulation always exists, because windows and doors are not one hundred percent tight. An average room of fifteen square meters usually contains far more oxygen than one or even two people need to breathe in during one night.

Whether the bedroom window should be open at night or better closed, can’t be answered flat rate. Both have their advantages and disadvantages. Decisive in the end is your own feeling. Everybody has their own personal preferences and habits. That’s why one should listen to oneself in these things – that is, what is good for you and what is not.

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