Japan Hiroshima Weather in May — Climate Guide
May in Hiroshima is high
Hiroshima Weather in May — Quick Answer
As of 2026- Avg temp
- 23° / 14°
- Rainfall
- 130mm · 10 days
- Crowds
- Very busy
As of 2026, Hiroshima in May averages a high of 23°C and low of 14°C with 130mm of rain over about 10 days. Warm. T-shirt + light layers.
May is high for Hiroshima.
Hiroshima Flower Festival May 3-5 is most-popular city festival. Hotels triple. Post-Golden Week reduced crowds.
Travel score
Hiroshima May Weather Stats
Avg High
23°C
Avg Low
14°C
Rainy Days
10
130mm total
Sunshine
8h
Daily avg
Humidity
70%
moderate
UV Index
7
High
Wind
7 km/h
Gusts 20
Sea Temp
17°C
swimming possible
Crowds
Very busy
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
16 μg/m³
PM10
26 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
24°C
Nighttime
14°C
Humidity and wind affect how the actual temperature feels.
Wind
7 km/h
Max gust 20 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Hiroshima Flower Festival
- 23°C ideal
- Reduced post-Golden Week crowds
Cons
- Pre-monsoon rain
- Hotels still high
May Events & Festivals
- Hiroshima Flower Festival May 3-5
- Pre-monsoon shoulder
Hiroshima in May — Full Picture
Hiroshima Flower Festival May 3-5 is most-popular city festival. Hotels triple. Post-Golden Week reduced crowds.
What to Wear & What to Pack
Warm. T-shirt + light layers.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current18.7°C
9.7°C
10/mo
Summer (Jun·Jul·Aug)
30.3°C
22.3°C
10.7/mo
Autumn (Sep·Oct·Nov)
23°C
14°C
7.3/mo
Winter (Dec·Jan·Feb)
11°C
2.7°C
6.7/mo
Hiroshima Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 10° | 2° | 7d·50mm | 5h | 65% | 2 | Quiet | Low season | |
| 11° | 2° | 7d·60mm | 6h | 65% | 3 | Quiet | Low season | |
| March (Best) | 14° | 5° | 10d·110mm | 7h | 65% | 4 | Very busy | Peak |
| April (Best) | 19° | 10° | 10d·130mm | 8h | 65% | 6 | Very busy | Peak |
| 23° | 14° | 10d·130mm | 8h | 70% | 7 | Very busy | Peak | |
| 27° | 19° | 13d·230mm | 5h | 75% | 7 | Moderate | Shoulder | |
| 31° | 24° | 11d·250mm | 6h | 75% | 9 | Busy | Peak | |
| 33° | 24° | 8d·130mm | 8h | 73% | 10 | Very busy | Peak | |
| 29° | 20° | 10d·200mm | 6h | 75% | 6 | Moderate | Shoulder | |
| October (Best) | 23° | 14° | 6d·100mm | 7h | 70% | 5 | Busy | Peak |
| November (Best) | 17° | 8° | 6d·80mm | 5h | 65% | 3 | Busy | Peak |
| 12° | 4° | 6d·50mm | 5h | 65% | 2 | Moderate | Shoulder |
View Other Months
Hiroshima May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Hiroshima?
Hiroshima in May is high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Hiroshima in May?
Hiroshima May averages a high of 23°C and a low of 14°C.
Does it rain much in Hiroshima in May?
Hiroshima May averages 130mm of rainfall over about 10 rainy days.
What should I wear in Hiroshima in May?
Warm. T-shirt + light layers.
What time are sunrise and sunset in Hiroshima in May?
Hiroshima May sunrise is 05:10 and sunset is 19:05, with 13h 55min of daylight.
What's the air quality like in Hiroshima in May?
Hiroshima May air quality (AQI) averages 45, rated Good. PM2.5 averages 16μg/m³.
What activities are recommended in Hiroshima in May?
In May, Hiroshima is great for Hiroshima Flower Festival May 3-5, Peace Park, Miyajima Mt. Misen hike.
Is May peak season in Hiroshima?
Hiroshima May crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Hiroshima
View Other Months
Planning a May trip to Hiroshima?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.