Chugoku & Shikoku Weather Guide

Chugoku & Shikoku Weather in September: What to Wear & Expect

In September, the summer heat lingers in Chugoku & Shikoku. Hiroshima's high is 29.1°C, and some days in early September are as hot as midsummer. September is when typhoons are most likely to approach Japan, and with the autumn rain front too, it's a rainy month. Kochi's precipitation in particular is 398.1mm, the most of any month. Late in the month, mornings and evenings gradually cool, and on the night of the harvest moon Okayama Korakuen holds a moon-viewing event.

Hiroshima high
29.1℃
Hiroshima low
21.1℃
Hiroshima rainfall
162.7mm
Hiroshima sunset
18:19
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Overview

Chugoku & Shikoku in September: Key Points

  • ✓Hiroshima's high is 29.1°C. Midsummer heat in early September
  • ✓Typhoons are likely to approach. Watch out for ferry suspensions and bridge closures
  • ✓Shikoku's Pacific side, including Kochi and Tokushima, is especially rainy
  • ✓Mornings and evenings start to cool late in the month
By Area

September Weather by Area

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

Hiroshima & Miyajima→

Station: Hiroshima

Hiroshima, Miyajima, Itsukushima Shrine, Atomic Bomb Dome

High
29.1℃
Low
21.1℃
Precip.
162.7mm
Sunshine
167h
Sunset
18:19

Highs around 29°C. Ferries to Miyajima may stop when a typhoon approaches

Onomichi, Shimanami Kaido, Ikuchijima, Imabari

High
28.3℃
Low
20.6℃
Precip.
126.8mm
Sunshine
164h
Sunset
18:16

Highs around 28°C. A good season for cycling from late in the month as the heat eases

Okayama & Kurashiki→

Station: Okayama

Okayama, Kurashiki Bikan Historical Quarter, Okayama Korakuen, Okayama Castle

High
29.1℃
Low
20.0℃
Precip.
142.2mm
Sunshine
158h
Sunset
18:13

Moon-viewing event at Okayama Korakuen on the night of the harvest moon. Highs around 29°C

Izumo & Matsue→

Station: Matsue

Matsue, Izumo Taisha, Matsue Castle, Lake Shinji

High
27.1℃
Low
19.6℃
Precip.
204.1mm
Sunshine
146h
Sunset
18:17

Highs around 27°C. A rainy month, but sunsets over Lake Shinji are beautiful on clear days

Tottori→

Station: Tottori

Tottori, Tottori Sand Dunes, Uradome Coast, Mt. Daisen

High
27.8℃
Low
19.0℃
Precip.
225.4mm
Sunshine
143h
Sunset
18:12

A rainy month with 225.4mm of precipitation. Highs around 28°C

Hagi, Tsunoshima, Akiyoshidai, Kintaikyo Bridge

High
27.2℃
Low
19.8℃
Precip.
201.4mm
Sunshine
152h
Sunset
18:23

Cormorant fishing at Kintaikyo Bridge until September 10. Hagi highs around 27°C

Takamatsu, Naoshima, Shodoshima, Kotohiragu, Ritsurin Garden

High
28.8℃
Low
21.2℃
Precip.
167.4mm
Sunshine
160h
Sunset
18:12

Highs around 29°C. Watch typhoon information for island-hopping ferries

Tokushima, Naruto & Iya→

Station: Tokushima

Tokushima, Naruto Whirlpools, Iya Vine Bridge, Oboke

High
28.5℃
Low
21.6℃
Precip.
271.2mm
Sunshine
162h
Sunset
18:10

Tokushima's rainiest month, with 271.2mm of precipitation. Watch out for heavy rain in mountainous Iya

Matsuyama & Dogo Onsen→

Station: Matsuyama

Matsuyama, Dogo Onsen, Matsuyama Castle, Uchiko

High
29.1℃
Low
21.0℃
Precip.
148.9mm
Sunshine
164h
Sunset
18:17

Highs around 29°C. Evening strolls in the Dogo Onsen area become pleasant

Kochi & Shimanto→

Station: Kochi

Kochi, Katsurahama Beach, Kochi Castle, Shimanto River

High
29.5℃
Low
21.4℃
Precip.
398.1mm
Sunshine
162h
Sunset
18:14

The rainiest month of the year, with 398.1mm of precipitation. Check typhoon information often

What to Wear

What to Wear in Chugoku & Shikoku in September

Tops
Short sleeves; light long sleeves late in the month too
Outerwear
A light layer for air conditioning and mornings and evenings
Bottoms
Lightweight pants
Shoes
Sneakers or other comfortable shoes that dry quickly if they get wet
Accessories
Folding umbrella, hat and sunscreen

In early September, midsummer clothes are fine. It's a rainy month, so light rainwear is a good idea for cycling the Shimanami Kaido and island hopping.

Good to Know

Good to Know

Typhoon season

September is when typhoons are most likely to approach Japan. Ferries and flights may be suspended, and bridges like the Seto Ohashi Bridge and the Shimanami Kaido may be closed, so leave room in your plans.

Watch out for lingering heat

In early September, days stay about as hot as midsummer. Keep drinking plenty and protecting yourself from the sun.

Silver Week

During the mid- to late-September holidays (Respect for the Aged Day and Autumnal Equinox Day), sights like Miyajima and Kurashiki can get crowded.

Have rainy-day plans too

It's a rainy month, so it's reassuring to have plans you can enjoy even in the rain, like art museums and indoor experiences.

Events

September Events & Highlights

Moon-Viewing Event

Okayama KorakuenThe night of the harvest moon (mid-September to early October)

The garden opens at night on the night of the harvest moon, and visitors gaze at the moon while listening to koto and shakuhachi music. You can even go on the lawns that are normally off-limits.

Cormorant Fishing at Kintaikyo Bridge

Iwakuni, YamaguchiJune 1–September 10

Upstream of Kintaikyo Bridge, watch from a roofed pleasure boat as cormorant masters direct their birds to catch sweetfish. In September it runs only until early in the month.

Typhoon Season

All of Chugoku & ShikokuSeptember

According to Japan Meteorological Agency averages, September is a month with many typhoons, both in the number that form and the number that approach Japan. Check the latest typhoon information during your trip.

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

FAQ

FAQ

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

On average, the high is 29.1°C and the low is 21.1°C. Midsummer heat continues in early September.

Q. Are there many typhoons in Chugoku & Shikoku in September?+

It's a time when typhoons are likely to approach. Ferries and bridges may be closed, so check the weather forecast and transport information.

Q. What should I wear in Chugoku & Shikoku in September?+

Short sleeves are fine for the most part. Bring a light layer for mornings and evenings late in the month and for air conditioning.

Plan Your Trip

Plan Your Chugoku & Shikoku TripPR

Other Months

Chugoku & Shikoku Weather in Other Months

Back to the Chugoku & Shikoku 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.