What is the weather like in Hiroshima in September?

Expect temperatures between 21°C and 28°C with 33% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Hiroshima in September?

Hiroshima in September scores 59/100 based on 30 years of climate data. Worthwhile timing with some trade-offs.

Who should visit Hiroshima in September?

September in Hiroshima is ideal for: Beach lovers, Cultural tourists, Business travelers.

Hiroshima Weather in September | 30-Year Forecast

Avg High

28°C

Hottest around day 1

Avg Low

21°C

Coolest around day 30

Rainy Days

25days

33% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Coastal Waters(Ocean)

28.2°C

Monthly Average

Water Feel

🌴Tropical

Perfect for swimming and water sports

Swim Rating

✅Excellent for swimming

Based on average sea surface temperature

Body of Water

Coastal Waters

Ocean

Hiroshima coastline

Essential Travel Info for Hiroshima

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

JPY

¥ Japanese yen

Language

Japanese

Driving

Left side

Connect

Public wireless LAN is available at publ...

Safety

Very High Safety

GPI: 1.336

Travel Intelligence

Exclusive flight analytics & health data for Hiroshima

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Remote

12/ 100

Traffic Index

Off the beaten path

Peak Daily Arrivals

slots per day

Peak

May

Low

Oct

Monthly Traffic Distribution

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Traffic Level

Low Season

Key Connections

Tokyo (HND)

Sendai (SDJ)

Chitose / Tomakomai New Chitose (CTS)

Seoul Incheon (ICN)

Naha (OKA)

Health & Safety Advisory

CDC travel health recommendations

8 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Japan. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Japan.

Japanese Encephalitis

Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Japan.If rabies exposures occur while in Japan, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

+2 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Hiroshima?

👌Worthwhile timing with some trade-offs(59/100)

Short Answer

Tropical storm season is active in Hiroshima during September. Average conditions (28°C, 33% rain) can be interrupted by severe weather. Monitor forecasts closely.

Decision Factors

Typhoon season active

Western Pacific zone - expect potential typhoon activity

Vaccinations required

Yellow Fever

Warm tropical seas

28.2°C sea temperature - Tropical Bath

Peak tourist season

90% of annual peak - expect crowds and peak prices

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Tuberculosis (TB)

Plenty of sunshine

8.6h of sunshine daily

Good For

🏖️
Beach lovers
28.2°C warm seas and 33% rain probability
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

💰
Budget travelers
Peak season means premium prices everywhere
👴
Elderly travelers
79% humidity creates difficult conditions
💼
Business travelers
Storm season may cause flight disruptions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Hiroshima in September averages 28°C with 33% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Hiroshima in September

What are the temperatures in Hiroshima in September?

Daytime highs average 28°C, nights drop to 21°C. Temperatures remain fairly consistent.

How many rainy days in Hiroshima in September?

Expect around 25 days with measurable rainfall. An umbrella is advisable.

What to wear in Hiroshima in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Hiroshima?

This is shoulder season—moderate prices and manageable crowds.

Hiroshima Weather in September