Tokyo Weather in September

Season: Early Autumn
In Short: Hot in early September, cool in middle and late month, peak season of typhoons

Although entering autumn, the temperature in early September in Tokyo is still high. The hot weather usually lasts till the mid and late September. By then, the weather becomes more and more pleasant and cool. However, starting form late month, the temperature difference between day and night gets large too. For visitors who travel in Tokyo in late September, a thin coat is needed to keep warm. September is the peak season of typhoons. If you are planning to take a trip in September 2025, please check the weather forecast in advance and avoid traveling on those days.
See also: Japan Weather in September

Tsukiji Hongan-ji in September

Temperature

In specific, the average temperature in the month is 25°C (77°F). The average highest temperature is about 27°C (80.6°F) and the lowest is about 23°C (73.4°F). In early month, sometimes the temperature can exceed 30°C (86°F) so visitors who travel in this period need to drink enough water to prevent getting heatstroke.
Average High Temperature: 27°C / 80.6°F
Average Low Temperature: 23°C / 73.4°F

Rainfall

Falling in the typhoon season, September has the second-highest rainfall of the entire year. The average rainfall is 211mm in September, so remember to bring an umbrella in case of the getting wet. It has 12 rainy days in this month and average humidity is about 71%.
Average Rainy Days: 12 days
Average Humidity: 71%

Sunrise & Sunset

In September, the duration of daytime and nighttime is nearly the same. The sun is about to rise at around 05:23 and fall at 17:49. The duration of daylight hours is about 12.3h and the sunshine hours are around 8h. Traveling under the sun can still make people feel stuffy so it is advisable to choose more shady places.
Daylight hours: about 12.3h
Sunshine hours: around 8h

Recommended Clothes to Wear in September

Girls

Tops: In early month, it is advisable to bring the short-sleeve clothes and a coat with you to adapt to the weather in cooler places. When entering the mid and late month, long-sleeve clothes and coat are more recommended.
Bottoms & shoes: Jeans and thin sweatpants can be your ideal choices. To match pants, a pair of sneakers or casual shoes is proper to wear.

Boys

Tops: To adapt to the weather in early month, T-shirt and short shirt are both good choices. Hoodie and long-sleeve shirt are more suitable to the weather in middle and late month.
Bottoms & shoes: Boys can bring the shorts, jeans and hiking shoes. Also, thin sweatpants can be prepared too.

Accessories: In typhoon season, umbrellas can’t be forgotten. If you don’t want to be dazzled by the sun, you can choose to wear a cap in sunshine hours.

Top Attractions to Visit in Tokyo in September

Travel Recommendation:

Many festivals and activities are held in Tokyo in September. You can not only enjoy the cultural activities like fireworks shows, but also admire the beauty of cosmos flowers. Below are some top places to see if you go there in 2025.

1. Kita City Fireworks Show & Chofu’s Autumn Fireworks Show

The Kita City Fireworks Show is held in Arakawa riverbank. The most special point of it is its different themes every year. It sets off fireworks based on featured themes together with various wonderful performances. Fireworks are also precisely synchronized with live music and the show is a feast for your eyes and ears.

The Chofu’s Autumn Fireworks Show in Tama River is also worth-seeing. With approximately 10,000 fireworks, the atmosphere is pretty lively and it plays unique music of Chofu and some familiar pieces in the same time. What’s more, there are also a wide variety of viewing seats for people to choose from, such as double seats for two people and table seats for four people. No matter how many people are traveling with you, you can get the best viewing experience.

2. Asakusa - Asakusa Samba Carnival

The Asakusa Samba Carnival is also an unmissable activity in September and it is the biggest Samba Carnival in Japan. It is held in Asakusa and on that day, visitors can enjoy about 5,000 dancers dancing forward to the rhythm of Samba music. The dancers in each team wearing gorgeous and colorful clothes and dance to compete to be the best team in the whole carnival. Infected by the passionate dance of the dancers, visitors can experience the liveliest feast in September.

Tip: The date of the Asakusa Samba Carnival varies every year. If you are interested in it, please check the official website in advance.

3. Kokurei Showa Memorial Park

Besides the lively fireworks shows, there are also some quiet places for visitors to enjoy the leisure time. In September, the Kokurei Showa Memorial Park holds Cosmos Festivals. The park has 20,000 square meters of cosmos fields and 4.4 million cosmos plants in total, which is the largest cosmos field in Tokyo. During the festival, visitors can also experience the cosmos picking activity and many other activities related to Japanese culture and art.

4. Ameyoko Shopping Street

Ameyoko Shopping Street is a good place for shopping. It has more than 400 various stores which can satisfy the shopping desire of many. Walking on the street, visitors can feel the strong atmosphere of life and local customs from the people’s energetic shouts. Remember to bargain with the seller for a lower price.

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