January in Hiroshima — reliably good (3rd best month)
Good · 7.4/10January averages 4°C (40°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 42 mm of rain — occasional showers rather than washed-out days — alongside about 24 sunny days and 10.2 daylight hours.
It scores 7.4/10 here, 3rd of 12 months, against 8.7/10 in the destination's best month.
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 · 6.9/10February averages 5°C (41°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 71 mm, so plan one flexible day in three; you still get about 22 sunny days and 11 hours of daylight.
It scores 6.9/10 here, 5th of 12 months, against 8.7/10 in the destination's best month.
Expect 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 — workable with trade-offs
Trade-offs · 6.3/10March averages 9°C (49°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 131 mm this is a genuinely wet month: about 23 sunny days in total, and outdoor plans need an indoor fallback.
It scores 6.3/10 here, 8th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and 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.
If your dates are flexible, October is materially better in Hiroshima — 2.4 points higher on the same scale.
April in Hiroshima — workable with trade-offs
Trade-offs · 6.8/10April averages 14°C (57°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 149 mm this is a genuinely wet month: about 23 sunny days in total, and outdoor plans need an indoor fallback.
It scores 6.8/10 here, 6th of 12 months, against 8.7/10 in the destination's best month.
Expect 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 — workable with trade-offs
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.
At 176 mm this is a genuinely wet month: about 23 sunny days in total, and outdoor plans need an indoor fallback.
It scores 6.8/10 here, 7th of 12 months, against 8.7/10 in the destination's best month.
Expect 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.
June in Hiroshima — workable with trade-offs
Trade-offs · 6.2/10June averages 22°C (71°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
219 mm of rain puts this in monsoon territory — about 21 sunny days across the whole month, and multi-day washouts are normal.
It scores 6.2/10 here, 9th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, swimwear 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 — the hardest end of the year
Hardest · 4.8/10July averages 26°C (80°F) with humidity around 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
At 171 mm this is a genuinely wet month: about 25 sunny days in total, and outdoor plans need an indoor fallback.
It scores 4.8/10 here, 11th of 12 months, against 8.7/10 in the destination's best month.
Expect 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 — the hardest end of the year
Hardest · 3.9/10August averages 27°C (81°F) with humidity around 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
291 mm of rain puts this in monsoon territory — about 26 sunny days across the whole month, and multi-day washouts are normal.
It scores 3.9/10 here, 12th of 12 months, against 8.7/10 in the destination's best month.
Expect low-season pricing, and 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.
If your dates are flexible, October is materially better in Hiroshima — 4.8 points higher on the same scale.
September in Hiroshima — workable with trade-offs
Trade-offs · 5.6/10September averages 25°C (77°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 156 mm this is a genuinely wet month: about 24 sunny days in total, and outdoor plans need an indoor fallback.
It scores 5.6/10 here, 10th of 12 months, against 8.7/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.
If your dates are flexible, October is materially better in Hiroshima — 3.1 points higher on the same scale.
October in Hiroshima — the year's strongest window
Best window · 8.7/10October 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.
Rainfall runs 60 mm, so plan one flexible day in three; you still get about 25 sunny days and 11.3 hours of daylight.
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.
Expect 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.
November in Hiroshima — reliably good (4th best month)
Good · 7.4/10November averages 12°C (54°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 87 mm, so plan one flexible day in three; you still get about 25 sunny days and 10.4 hours of daylight.
It scores 7.4/10 here, 4th of 12 months, against 8.7/10 in the destination's best month.
Expect 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 — reliably good (2nd best month)
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 sunny days and 9.9 daylight hours.
It scores 8/10 here, 2nd of 12 months, against 8.7/10 in the destination's best month.
Expect peak pricing, and 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.
