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Hiroshima, Japan · Temperate oceanic

Hiroshima in May: go or not?

Good time. Hiroshima in May gets 7.8/10.

📅 Updated August 2026 🛰️ ERA5 · 10 years 📍 34.40°N · 132.46°E
⚡ This month's verdict
Go for it
Hiroshima · May
7.8
13–22°
Temperature
30%
Rain
7h
Sun
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo : Rap Dela Rea via Unsplash
The month in detail

What to expect in May

Spring marks the start of the good season in Hiroshima. Temperatures rise (22.0°C) and tourists have not yet arrived en masse. Expect rain on 30.0% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if May (7.8/10) remains theoretically better.

May is the best month of the year in Hiroshima. Compared to April: +4°C daytime.

This month's conditions

What it's like in May

UV index
6 · high
sunscreen and hat advised
Feels like
comfortable
13°
Sea
18°C
cool, invigorating
Daylight
13.8h of daylight
Air quality
fair
AQI 40
Compare

Is May the right month?

May is actually the best month of the year in Hiroshima. Good timing.

See all 12 months →
Context

Our verdict

Hiroshima is one of Japan's major historic destinations: the city rebuilt after the atomic bombing of 6 August 1945 (140,000 deaths in the long term). May is my favourite month (8.2/10): 13-22°C, 30% rain, mild temperatures before the monsoon.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Hiroshima

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · Japan

🗣️LanguageJapanese
💶CurrencyYen japonais (¥)
🚗DrivingLeft-hand
🛡️Safety Safe · 2/5
💰Cost of living Moderate · 3/5

🌡️ Climate

🌍Climate typeTemperate oceanic
📈Climate trend Stable
🔥Hottest monthAugust · 31°C
❄️Coolest monthJanuary · 9°C
🌧️Rainiest month June · 48%

🏖️ Beach holiday

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) Modérée
Location

Where is Hiroshima ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Japan
Temperate oceanic climate with a 7.8 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
34.40°N · 132.46°E
Questions

Frequently asked questions

What is the best time to visit Hiroshima?
May is the best month with 22.0°C highs, 13.0°C lows, 6.8h of sunshine and 30.0% rainy days. The months of May & September offer comparable conditions.
How many hours of sunshine does Hiroshima get in May?
Hiroshima averages 6.8 sunshine hours per day in May. It is the sunniest month with a climate score of 7.3/10.
What is the rainiest month in Hiroshima?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Hiroshima in May?
In May, overnight lows reach 13.0°C, while afternoon highs average 22.0°C.
Is Hiroshima good in winter?
In winter (December-February), Hiroshima scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains May with a score of 7.3/10.
When should you avoid Hiroshima?
January is the most difficult month to visit Hiroshima, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Hiroshima in May?
In May, the sea averages 18°C in Hiroshima: cool, invigorating. Swimming is possible but brisk; sensitive swimmers may prefer a wetsuit.
Do you need sun protection in Hiroshima in May?
The average UV index reaches 6 in May in Hiroshima (high), with about 13.8h of daylight. Sunscreen and hat advised.