Check the temperature of the water you are bathing in, it may be too cold for your body. According to the Guide-Piscine website, the body temperature is 37°C. In this sense, the water should ideally oscillate between 33°C and 34°C when bathing, because below the body cools. In this case, you risk hypothermia. The blood slows down, which eventually slows you down, even makes you pass out.
It is therefore advisable not to stay too long in water that does not reach the recommended 33°C. To detect this condition, vigilance is essential. Knowing that in water at 10°, the first signs appear after 40 minutes. The symptoms are:
On the other hand, it is also necessary to pay attention to the hydrocution. It is a thermal shock that occurs in contact with an aquatic environment. It leads to “sudden syncope (loss of consciousness) caused by too rapid immersion of the body in cold or icy water” explains Jérémie Dherbometz, first aider within the Paris Seine Civil Protection, on the Doctissimo site. Hydrocution can then lead to drowning. To prevent it, you must wet your neck, avoid excessive exposure to the sun and gradually enter the water.
If you want to swim in the sea, or in the ocean, it is theoretically useful to know the temperature of the water. For you, Planet has produced the slideshow below. Here is the list of water temperatures on the French coast on July 26, 2022, by department, with the help of the site ca baigne.