January in Hiroshima — reliably good (3rd best month)
Good · 7.4/10Expect 4°C (40°F) in January. A good month for city streets, viewpoints and long meals; leave swimming for another season.
With around 42 mm of rain, any showers tend to pass through rather than settle in; about 24 days with 6+ hours of sunshine and 10.2 hours of daylight fill the rest.
That is 7.4/10 on the same scale — 3rd of 12 months, versus 8.7/10 for the best month here.
Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
February in Hiroshima — workable with trade-offs
Trade-offs · 6.9/10Expect 5°C (41°F) in February. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 71 mm of rain this month — a flexible day or two helps — with about 22 days with 6+ hours of sunshine and 11 hours of daylight to work around it.
That is 6.9/10 on the same scale — 5th of 12 months, versus 8.7/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
If your dates are flexible, October is materially better in Hiroshima — 1.8 points higher on the same scale.
March in Hiroshima: mixed conditions, plan around the weather
Trade-offs · 6.3/10March averages 9°C (49°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Monthly rainfall reaches 131 mm — wet for this destination — but about 23 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 6.3/10 here, 8th of 12 months, against 8.7/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Flexible dates? October scores 2.4 points higher here — enough to change the trip.
April in Hiroshima: mixed conditions, plan around the weather
Trade-offs · 6.8/10Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.
149 mm of rain makes this a wet month here, though with about 23 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 6.8/10 on the same scale — 6th of 12 months, versus 8.7/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
If your dates are flexible, October is materially better in Hiroshima — 1.9 points higher on the same scale.
May in Hiroshima — middling scores, decent value
Trade-offs · 6.8/10May averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Monthly rainfall reaches 176 mm — wet for this destination — but about 23 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 6.8/10 here, 7th of 12 months, against 8.7/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Flexible dates? October scores 1.9 points higher here — enough to change the trip.
June in Hiroshima: mixed conditions, plan around the weather
Trade-offs · 6.2/10At 22°C (71°F) this is comfortable city weather in June, with sightseeing easiest before lunch and after the afternoon peak.
This is the year's wettest stretch at 219 mm, but with about 21 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 6.2/10 on the same scale — 9th of 12 months, versus 8.7/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
If your dates are flexible, October is materially better in Hiroshima — 2.5 points higher on the same scale.
July in Hiroshima — off-season conditions
Hardest · 4.8/10Days in July average 26°C (80°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
171 mm of rain makes this a wet month here, though with about 25 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 4.8/10 on the same scale — 11th of 12 months, versus 8.7/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, October is materially better in Hiroshima — 3.9 points higher on the same scale.
August in Hiroshima — off-season conditions
Hardest · 3.9/10August averages 27°C (81°F) and humidity near 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
291 mm makes this the wettest stretch of the year, though about 26 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 3.9/10 here, 12th of 12 months, against 8.7/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? October scores 4.8 points higher here — enough to change the trip.
September in Hiroshima — middling scores, decent value
Trade-offs · 5.6/10September averages 25°C (77°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Monthly rainfall reaches 156 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 5.6/10 here, 10th of 12 months, against 8.7/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
Flexible dates? October scores 3.1 points higher here — enough to change the trip.
October in Hiroshima — the year's strongest window
Best window · 8.7/10Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 60 mm of rain this month — a flexible day or two helps — with about 25 days with 6+ hours of sunshine and 11.3 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Hiroshima at 8.7/10 — the reference point every other month on this page is measured against.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
November in Hiroshima: strong conditions, 4th of 12
Good · 7.4/10Temperatures hover around 12°C (54°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 87 mm of rain this month — a flexible day or two helps — with about 25 days with 6+ hours of sunshine and 10.4 hours of daylight to work around it.
That is 7.4/10 on the same scale — 4th of 12 months, versus 8.7/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
December in Hiroshima: strong conditions, 2nd of 12
Good · 8/10December averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 29 mm of rain — occasional showers rather than washed-out days — alongside about 25 days with 6+ hours of sunshine and 9.9 daylight hours.
It scores 8/10 here, 2nd of 12 months, against 8.7/10 in the destination's best month.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
