Weather In Japan September 2024. The weather in tokyo in september is hot. Get the monthly weather forecast for tokyo, tokyo, japan, including daily high/low, historical averages, to help you plan ahead.
In october, afternoon temperatures range from 19ºc to 23ºc (66°f to 73°f), and morning temperatures tend to be around 14ºc to 18ºc (57°f to 64°f). The summer heat begins to fade, and the autumn colors start to emerge in some regions.