Nagoshi Harae is a religious practice that keeps one safe from the hot summer and safety from disease and natural disasters. You can see Nagoshi Harae done at local shrines in most districts. The practice may vary depending on which shrine you go to but the idea is the same. Commonly, a large wreath is made out of Japanese pampas grass and it is said to purify you if you walk through it 3 times. Other times, people will breathe or rub themselves against a doll to transfer their bad sins and anything uncleanly then, burn it or drown it in a river Also, there it is a custom to eat "minazuki", a Japanese style snack made out of red bean into a triangular candy shaped to look like ice. Red bean is believed to purify one from the devil of infectious diseases.
Other Events in June
Kawadoko takes place every summer from June to August. Every year, carpenters will build wooden balconies around the riverbanks of Kyoto for people to cool off and sit while eating dinner on a hot summer evening. Some shrines have different names for it. Nouryoudoko is basically the same meaning as kawadoko. At Kamo River, About 70 wooden platforms are built along Kamo River from Nijo bridge to gojo bridge. You can have a taste of fancy, authentic Japanese food in Kyoto and will make you feel relaxed in the open space on a warm evening.