Japan Weather in September

September is at the end of summer and the beginning of autumn around Japan. Even so, summer heat has not gone far and it’s still hot in the first half of September. Then, it gets somewhat cooler. The temperature is around 20-27℃ (68-80.6℉) averagely in September in most parts of Japan, while it can reach 29℃ (84.2℉) in southern places like Okinawa and it can be as low as 16℃ (60.8℉) after nightfall in Hokkaido. As autumn comes, the temperature difference would be bigger and bigger between day and night throughout the country.
 It’s the peak month of typhoons, which brings plenty of rainfall to Japan. The storm is often so heavy that it isn’t a good time for travelling in the country. If you run across a typhoon in Japan in September, you’d better stay indoors and take a break from your journey.
  At the beginning of September, short summer clothes are OK in Japan for the muggy weather, like T-shirt, cropped pants and sandals. Later, as Japan weather in September gets cooler, long clothes of single layer, such as long-sleeve shirt, thin hoodie, casual pants, and sneakers, can be worn instead. Watch the weather forecast and take umbrella, raincoat and rain boots in case of a typhoon.
  Slack Season
 Recommendation Rate: 
September is a slack season to travel in Japan for the weather not friendly. Although there would be possible typhoons on your Japan journey, you could enjoy a lower expense and wander around attractions with less tourists at a temperature has eased up relatively. The most famous attractions can be visited on a sunny day throughout Japan, in addition, here are a few featured activities in the country during September.
 

Tokyo Ryogoku Kokugikan Stadium

Japanese food can’t be missed when travelling to Japan, and September is a great period to try these food and snacks cooked with freshest ingredients, as it’s the start of harvest season, grains, fruits, vegetables and also fishes. Especially, it is just the season of Pacific saury. You can go to the local foodie streets to satisfy your appetite, including Nishiki Market in Kyoto, Omoide and Hozenji Yokocho alleys in Tokyo, Dotonbori in Osaka, etc.
 Sumo is a national sports of Japan only, and September is the time to watch the national sumo tournament in Tokyo. The tournament is usually held during the last two thirds of September in Tokyo Ryogoku Kokugikan, the sumo stadium. You can book the tickets in advance and witness the unique wrestling in person. Otherwise, the Sumo Museum inside Ryogoku Kokugikan stadium is also visit-worthy to learn about this Japanese sports.

Autumn flowers beginning to bloom make Japan in September more beautiful. You may appreciate the fancy chrysanthemum, red spider lily, cosmos, etc. in parks or gardens.

  For possible typhoons, you’d better watch the local weather forecast in advance and avoid the typhoon days when planning your trip. Also, take rain gear like umbrella or raincoat with you in case.
 Although it gets a little cooler in September around Japan, sunscreen is still necessary.