This article discusses the climate and temperature of Japan, including average temperatures, humidity levels, and popular activities during summer months. July and August are the hottest months in Japan with temperatures reaching up to 35°C (95°F). Humidity levels rise significantly due to high temperatures combined with warm ocean currents coming from China Sea or South Pacific Ocean. Popular activities during summer months include swimming at beaches or pools, going out for a night out at one of Tokyo's famous rooftop bars, exploring local festivals, attending outdoor concerts, watching fireworks displays, eating delicious street food, visiting temples or shrines, taking a dip into an onsen hot spring bath. Tips for staying cool during hot months include drinking plenty of water throughout the day so you don't become dehydrated; wearing light clothing made from breathable fabrics; avoiding strenuous activities during peak hours; using umbrellas when going outdoors; applying sunscreen regularly; keeping your house cool by using curtains/blinds/shutters etc.