Weather August in Tokyo, Japan
Visitors to Tokyo during the month of August should plan on bringing a raincoat since it will be raining some days. This month is part of the rainy season (monsoon). August is the hottest month. The average maximum temperature lies around 30.0°C (86°F). During the night it can be very warm as well. You will see the sun sometimes in this month, It has 177 hours of sun.