Hiroshima climate
Japan
First-time visitors often notice “tiring weather” before they label it as hot or cold in Hiroshima.
In Hiroshima, seasonality tends to show up in mornings/evenings and indoor-outdoor gaps more than in a single number.
Climate facts
Jan · Feb
Avg low 2–4°C / high 9–12°C · Rainy days: 5–8 per month / rainfall 40–80 mm
Mar · Apr
Avg low 7–12°C / high 15–21°C · Rainy days: 8–10 per month / rainfall 90–150 mm
Sep · Oct
Avg low 16–20°C / high 23–29°C · Rainy days: 6–9 per month / rainfall 90–180 mm
Nov · Dec
Avg low 5–9°C / high 12–17°C · Rainy days: 5–8 per month / rainfall 40–100 mm
How it tends to feel for travel
In hotter periods, day-versus-night fatigue accumulates differently, changing how the climate feels.
For travel, what you remember is often variability (rain patterns, humidity, daily swings), not the average.
When it tends to fit
- • Once you see the year-round pattern, it’s easier to judge whether a month fits your style.
- • If you revisit the city, separating “seasonal itineraries” can save a lot of planning time.
When it may not fit
- • If you rely only on averages, you may be surprised by variability (squalls, wind, indoor AC).
- • In monsoon-like periods, the more your itinerary depends on outdoor walking, the higher the risk.
- • If you’re fine with cold but hate damp chill, it can feel colder than you expect.
Outfit notes
This connects climate patterns to packing—without over-interpreting.
- • 🌡️ 2–10°C feel (winter): Coat/padded jacket + thermal layers are common. If you add Miyajima or riverside exposure, wind can drop comfort quickly—scarves help.
- • 🌡️ 10–18°C (early spring / late autumn): Trench or light coat + sweatshirt/shirt works well. Days can feel mild; evenings can be breezy.
- • 🌡️ 18–25°C (spring / autumn): Short or long sleeves with a thin outer layer is usually enough. Walking comfort matters because step counts rise easily.
In the end, it often depends on one or two conditions you care about most.
Explore Hiroshima
These pages are connected so you can compare conditions and decide for yourself.