A signature summer event in Japan is fireworks displays. There is a fireworks show somewhere in Japan every weekend during July and August. Enjoying fireworks or summer festivals with local people wearing yukata will definitely become an unforgettable memory in your life. Enjoy summer in Japan to the fullest!
I was one of these foreigners once :) There was one time that I spent two months in Japan (July and August). I must say that because of the heat it was not the most pleasant experience of Japan, but the hanabi events were among the highlights of my summer!
Wow! I didn't know fireworks displays were a Summer tradition in Japan, or anywhere to be honest. I'm just used to seeing them during some special holidays and, most typically, on New Year's Eve. I really wish I could go to Japan :)