Nosebleeds in summer may be related to hot weather, dry environment and diseases. 1. Hot weather: Nosebleeds in summer are mostly caused by weather factors, due to the hot weather in summer, leading to dry nasal mucosa, nasal mucus gland secretion is relatively insufficient, which can easily induce nasal mucosa erosion, ulceration, and rupture of blood vessels in nasal mucosa, leading to bleeding. 2. Dry environment: summer easy nosebleed may be related to the environment, some patients in the air-conditioned room for a long time, the room is dry, no timely hydration, nasal mucosa rupture due to dryness leading to bleeding. 3. Disease: Nosebleeds in summer may be caused by diseases, such as atrophic rhinitis, high blood pressure, nasal hemangioma, blood diseases, etc., which are triggered by the hot weather and bring symptoms of nosebleeds. Patients who are prone to nosebleeds in summer are advised to go to regular hospitals for timely examination to clarify the diagnosis and cause of the disease.