Hot weather has an effect on blood pressure. Hot weather can affect blood pressure. In general, when the weather is hot, the human body tends to show lower blood pressure than usual, the reason may be related to the hot weather as well as the dilation of blood vessels, resulting in more sweating of the skin and a decrease in blood volume. When it’s cold, blood vessels constrict, leading to higher blood pressure. For patients with high blood pressure, in addition to the need for regular testing of blood pressure, but also according to the climate and seasonal changes in the appropriate adjustment of antihypertensive drugs, so as to avoid excessive fluctuations in blood pressure on the cerebral blood vessels have direct damage. If you find significant changes in blood pressure in hot weather, you should consult a doctor in time and improve the relevant examinations to clarify the diagnosis and standardize the treatment, so as not to delay the condition.