Weather January in Tokyo, Japan
January is the driest month of the year. The amount of rain is normal with an average of 45mm (1.8in). January is the coldest month. The average maximum temperature lies around 9.0°C (48.2°F). During the night it can cool down as well. This month is known as a chilly month. You will see the sun sometimes in this month, it has 175 hours of sun.