Hiroshima’s Atomic Bomb Dome, Motoyasu River and Peace Memorial Park seen from above at sunset

Japan · Destination guide

Hiroshima, Japan

Best seasonApril–May and October–November

CurrencyJapanese yen (JPY)

Plug typesA, B · 100 VCheck adapter →

Time zoneAsia/Tokyo (UTC+9)

Emergency number110 (police); 119 (fire / ambulance)

Destination guide

A first look at Hiroshima

Spend an unhurried day around Peace Memorial Park, then pair the castle grounds with Shukkeien on another outing. The castle keep is closed to visitors; its moat-side views and other open areas still make a worthwhile walk.

Explore our Hiroshima guides

The preserved ruined walls and exposed framework of Hiroshima’s Atomic Bomb Dome

A first weekend in Hiroshima: peace park, castle and garden

Hiroshima Castle’s keep and reconstructed Ninomaru walls beyond the moat

Hiroshima Castle: grounds, Ninomaru and the closed keep

Hiroshima Peace Memorial Museum’s raised main building beyond the Flame of Peace and cenotaph

Hiroshima Peace Memorial Museum: planning a thoughtful visit

Weather guide

Weather in Hiroshima

Hiroshima has cool winters and hot, humid summers. June and July are especially wet in the long-term city record. Spring and autumn offer milder conditions for walking, with rain protection useful throughout the year.

22–26°C

Mild days with cooler mornings

October · representative month, not a forecast

Evenings: 13–17°C
Rain: Showers possible
Daylight: Daylight changes through the month

See weather details →

What this means for packing

Milder days make the riverside and garden pleasant walking choices. Pack a light jacket for mornings and evenings and keep an umbrella handy.

Choosing a season

The best-season badge suggests months for general sightseeing, using the typical daytime temperatures and rainfall in our monthly guides. Beach holidays, festivals, winter sports and northern lights trips may suit different dates.

Climate methodology

Broad planning ranges rounded to roughly 2°C either side of Hiroshima’s 1991–2020 mean daily maximum (23.7°C) and minimum (14.9°C) for October. JMA records mean monthly precipitation of 109.2 mm. These city-station normals are not forecast limits or a prediction for your dates; check the forecast before travelling.

Reviewed 2026-10-20

Japan Meteorological Agency — Hiroshima 1991–2020 city-station normals · Official Hiroshima tourism — local outings and seasons

About the climate in Hiroshima

Packing guide

What to wear in Hiroshima in September.

An example packing list for Hiroshima in September

Use this as a starting point and choose what suits your plans. Packtricia tailors your list and quantities to your trip length, weather and preferences.

Clothing

Underwear
Bras (if worn)
Socks
Sleepwear
Breathable tops
Lightweight trousers or skirt
Quick-drying clothes
Sun hat
Comfortable walking shoes
Light indoor layer
Rain jacket

Toiletries

Toothbrush
Toothpaste
Shampoo
Conditioner
Body wash or soap
Deodorant
Skincare products
Sunscreen
Hairbrush or comb
Shaving supplies (if used)
Menstrual products (if needed)
Contact lens solution (if used)

Essentials

Passport or accepted travel ID
Travel tickets and booking confirmations
Wallet and payment cards
Phone
Charging cable and charger
Travel adapter (if needed)
Medication (if needed)
Glasses or contact lenses (if used)
Refillable water bottle
Day bag
Sunglasses
Compact umbrella
Water-resistant pouch for phone and documents
Reusable shopping bag
Small hand towel
Portable fan (if useful for heat)

Monthly weather and packing notes

Summer warmth can linger alongside rain and storm risks. Bring quick-drying clothes, check transport alerts and keep indoor alternatives flexible.

Daytime: 27–31°C
Evenings: 19–23°C
Rain: Showers possible
Daylight: Longer days; allow heat breaks
Packing style: Breathable clothes and rain protection

Broad planning ranges rounded to roughly 2°C either side of Hiroshima’s 1991–2020 mean daily maximum (29.1°C) and minimum (21.1°C) for September. JMA records mean monthly precipitation of 162.7 mm. These city-station normals are not forecast limits or a prediction for your dates; check the forecast before travelling.

Outfit ideas for your outings

A September Peace Memorial Park walk

Breathable top
Lightweight trousers or skirt
Sun hat
Comfortable walking shoes

Shukkeien and the castle grounds

Walking shoes with grip
Compact umbrella or rain jacket
Water and sun protection

Museum visit and an okonomiyaki meal

Small day bag
Comfortable shoes
Light layer for air conditioning
Charged phone

What to leave behind

Heavy, slow-drying outfits: heat and humidity favour breathable layers.
Unworn or slippery shoes: garden paths and riverside pavements can be wet.

Reviewed 2026-10-20

Japan Meteorological Agency — Hiroshima 1991–2020 city-station normals · Official Hiroshima tourism — local outings and seasons

Transport guide

Getting around Hiroshima

Use Hiroden’s English route information and MOBIRY TRAVEL’s mobile route search for city journeys. Choose tickets by their actual network coverage: streetcars, JR trains, buses and ferries do not share one universal pass.

Hiroden — official English routes and riding guidance
Check the line number, destination and current station guidance before boarding. Use the official route map and riding instructions, especially when changing between a tram, bus and JR train. Route information does not buy or activate a ticket.
MOBIRY TRAVEL — mobile route search and digital passes
Use this official mobile website without installing an app. It offers route search and supported digital tickets. Register and verify your email before purchase. The 8- or 24-hour streetcar product covers Hiroden electric rail lines; it does not include JR, buses or ferries. Other products have their own coverage, so check each planned leg.
MOBIRY TRAVEL — activating and showing a ticket
In My Tickets, select the ticket under Before Activation and follow Activate when starting use, as directed for your product. Show the live ticket screen to the crew when getting off. Internet access and a charged phone are needed; screenshots are not valid. Check validity before activating and avoid starting a timed pass long before your first ride.
MOBIRY DAYS — separate official payment app
Follow the official iPhone or Android download links if you want this separate registered stored-value system. Register and add credit, then scan the app’s current QR code when boarding and leaving supported services. This is different from showing a MOBIRY TRAVEL pass. Coverage is limited to participating operators; do not assume it pays JR fares or works on every bus. Use the mobile website and cash or operator-supported alternatives if app installation or registration does not suit.
MOBIRY DAYS — participating operators and routes
Check this current operator list before relying on the payment app. It is not the same as the coverage of a MOBIRY TRAVEL sightseeing pass; confirm each route and any exclusions.

Check the operator’s current service notices and ticket instructions before travelling.

Practical essentials

Language and calling code

Language: Japanese
Calling code: +81

Useful essentials for Hiroshima

Comfortable walking shoes
Seasonal layers
Compact umbrella
Small day bag
Refillable water bottle
Phone charger and power bank
Type A / B adapter if your plugs differ

Do you need a visa?

Check travel-document and visa requirements for your passport, destination and transit stops.

Check your requirements on TravelDoc

Use the checker as a starting point, then confirm requirements with the relevant government or embassy before travelling.

Stay connected

Mobile data for your trip. Check what your current plan includes for roaming. If you need another option for maps, messages and booking details, compare NXTL eSIM coverage and rates. Check that your phone supports eSIM and is unlocked, and check coverage for every stop. Download important maps and confirmations for offline use too.

Photo: Hoi Wai / Pexels

A first look at Hiroshima