If the temperature difference between day and night is large or the temperature difference between indoor and outdoor is large, then there will be a condensation effect, or it will rain at high temperatures, just like driving in winter or wearing glasses is more likely to produce fog, so special attention should be paid to the ventilation effect.
The internal and external accounts should be completely separated, and the external accounts should be pulled out, calibrated and kept straight, so as to prevent poor drainage and poor permeability when it rains. When setting up a tent, try to nail all the camping ropes related to the original factory, and then set up a more perfect tent. Usually outdoor tent for camping is designed both internally and externally, and it is unlikely that a double tent will allow dew to penetrate the second floor and fall into the tent.
When the humidity of the environment is equal to the outdoor humidity, when people enter the tent, the temperature will rise, so generally there will be a significant temperature difference. The temperature released by the human body causes the humidity to evaporate and rise under the temperature difference between inside and outside, so that the top of the tent can be condensed into water droplets. This is like driving on a rainy day, the windows often condense fog or when you wear a raincoat on a rainy day, there will be water in the raincoat, and the condensed water molecules will stick to the skin, so if the airflow does not flow, condensation will occur.
The main reason for this phenomenon is humidity and temperature, and the way to resolve this phenomenon is to maintain ventilation, open doors and windows to allow air convection, set up tents in a ventilated place, and maintain air flow and moisture balance.