Tokyo Weather Guide

Tokyo Weather in September: What to Wear & Expect

September is officially autumn, but Tokyo is still in the grip of summer heat. Central Tokyo's high is 27.5°C, and in early September days over 30°C are common. Typhoons are likely to approach, and with the autumn rain front as well, this is one of the rainiest times of the year. Late in the month, mornings and evenings gradually cool down, and you can feel autumn arriving in Karuizawa and Oku-Nikko.

Tokyo high
27.5℃
Tokyo low
20.3℃
Tokyo rainfall
224.9mm
Tokyo sunset
17:50
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Overview

Tokyo in September: Key Points

  • ✓Central Tokyo's high is 27.5°C. Early September is as hot as midsummer
  • ✓Typhoons and autumn rain make it wet: about 225 mm for the month
  • ✓Mornings and evenings start to cool down late in the month
  • ✓Oku-Nikko and Karuizawa, with highs around 19–22°C, are on the doorstep of autumn
By Area

September Weather by Area

Temperature, precipitation, snow and sunshine are climate normals (1991-2020). Sunset is for September 15.

Central Tokyo→

Station: Tokyo

Shinjuku, Shibuya, Asakusa, Ginza

High
27.5℃
Low
20.3℃
Precip.
224.9mm
Sunshine
127h
Sunset
17:50

Lingering heat is intense early in the month. Keep an eye on typhoon information

Yokohama→

Station: Yokohama

Minato Mirai, Chinatown, Red Brick Warehouse

High
27.3℃
Low
21.0℃
Precip.
241.5mm
Sunshine
141h
Sunset
17:50

Highs around 27°C. Rainy days become more frequent

Kamakura & Enoshima→

Station: Tsujido

Kamakura, Enoshima, Shonan

High
27.6℃
Low
20.8℃
Precip.
197.3mm
Sunshine
147h
Sunset
17:51

Tsurugaoka Hachimangu's grand festival in mid-September. Beach season is over

Hakone→

Station: Gotemba

Hakone-Yumoto, Gora, Lake Ashi, Owakudani

High
25.5℃
Low
17.5℃
Precip.
372.5mm
Sunshine
116h
Sunset
17:53

Highs around 25°C. The rainiest time of the year

Fuji Five Lakes→

Station: Kawaguchiko

Lake Kawaguchi, Lake Yamanaka, Oshino Hakkai

High
23.8℃
Low
14.8℃
Precip.
264.7mm
Sunshine
123h
Sunset
17:54

Mt. Fuji's climbing season lasts until early September. Late in the month, mornings drop below 15°C

Nikko→

Station: Oku-Nikko

Nikko, Lake Chuzenji, Kegon Falls, Kinugawa Onsen

High
18.9℃
Low
11.9℃
Precip.
409mm
Sunshine
105h
Sunset
17:52

Oku-Nikko's high is around 19°C, and autumn colors begin late in the month

Karuizawa→

Station: Karuizawa

Karuizawa, Kyu-Karuizawa, Shiraito Falls

High
21.7℃
Low
13.0℃
Precip.
193.5mm
Sunshine
127h
Sunset
17:55

Highs around 22°C. The summer crowds settle down, and it's comfortable

Kusatsu Onsen→

Station: Kusatsu

Kusatsu, Yubatake, Sainokawara

High
19.8℃
Low
12.3℃
Precip.
254.6mm
Sunshine
109h
Sunset
17:55

Highs around 20°C. Mornings around 12°C feel chilly

Izu→

Station: Ajiro

Atami, Ito, Jogasaki Coast

High
26.7℃
Low
20.9℃
Precip.
263.9mm
Sunshine
137h
Sunset
17:53

The heat lingers; in early September some days are still good for the beach

What to Wear

What to Wear in Tokyo in September

Tops
Mostly short sleeves; light long sleeves late in the month
Outerwear
A light layer for air conditioning; a long-sleeved jacket if you're heading to the mountain areas
Bottoms
Breathable pants
Shoes
Waterproof sneakers that are comfortable in the rain
Accessories
Folding umbrella, hat and sunscreen

In Oku-Nikko, Kusatsu and Karuizawa, mornings and evenings drop to about 12–13°C. Bring a cardigan or light jacket.

Good to Know

Good to Know

Peak typhoon season

September is when typhoons are most likely to approach the Kanto region. Railways may suspend service in advance and flights may be canceled, so check the forecast often during your trip.

You still need to beat the heat

In early September, many days top 30°C and there's a risk of heatstroke. Keep drinking water as you would in summer.

Holiday weekends are crowded

Mid to late September has a cluster of national holidays, and in some years they form a long weekend called 'Silver Week'. Tourist spots can get crowded.

Have rainy-day plans ready

It's a rainy month, so include some indoor sights in your plans.

Events

September Events & Highlights

Otsukimi (Moon Viewing)

Across JapanUsually mid-September to early October

A Japanese tradition of admiring the harvest moon. Rice dumplings and silver grass are set out as decorations, and temples, shrines and gardens hold moon-viewing events.

Halloween at Tokyo Disney Resort

Maihama, ChibaUsually mid-September to the end of October

The whole park is decorated for Halloween, and there are periods when you can come in costume (check the official website for the rules).

Atami Fireworks Festival

IzuFebruary–December

A fireworks show over the sea that began in 1952 and is held more than ten times a year in Atami Bay. Surrounded by mountains on three sides, the bowl-shaped bay makes the sound echo, giving it the impact of a stadium. Shows are held in spring, summer, autumn, and winter, with about 5,000 shells launched in summer and about 3,000 in other seasons.

Read the guide:Atami Fireworks Festival →

Dates change every year. Please check the official websites before you go.

FAQ

FAQ

Q. What's the temperature in Tokyo in September?+

On average, the high is 27.5°C and the low is 20.3°C. Early September stays as hot as midsummer.

Q. Are there many typhoons in Tokyo in September?+

Typhoons are most likely to approach the Kanto region from August to October, especially in September. Check the forecast during your trip.

Q. What should I wear in Tokyo in September?+

As a guide, summer short sleeves in early September, and short sleeves with a light long-sleeved layer late in the month. Bring an umbrella for rainy days too.

Plan Your Trip

Plan Your Tokyo TripPR

Other Months

Tokyo Weather in Other Months

Back to the Tokyo Weather Guide (all months & areas) →

Source: Japan Meteorological Agency (climate normals 1991-2020). Compiled by tripuuu.log. Temperatures are from a representative station in each area; actual weather varies from year to year.