July and August are the hottest months in Japan, with temperatures ranging from 25-35°C depending on the region. The combination of heat and humidity can make it feel much hotter than the actual temperature, leading to health problems if proper precautions are not taken. It is important to stay hydrated, wear lightweight clothing, and stay in air-conditioned areas. Japan also experiences typhoon season during these months, so it is important to stay informed about any warnings or advisories. Despite the heat and potential for typhoons, there are many festivals, beaches, and delicious produce available during these months that make Japan a great place to visit.