Hiroshima weather in September
Hiroshima in September averages 25°C (77°F), 153 mm of rain and 5.8 hours of sun a day. It is one of the wetter months of the year here.
Of the twelve months in Hiroshima, September is the third warmest and the fourth wettest.
- Average temp
- 25°C (77°F)
21–29°C · 70–85°F
- Rainfall
- 153 mm
A wet month
- Sunshine
- 5.8 h
hours per day
- Wind
- 10 km/h
What is Hiroshima like in September?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Expect frequent rain — this is a wet month.
Evening
Evenings stay warm.
What should I pack for Hiroshima in September?
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A proper waterproof, not a folding umbrella
153 mm in the month usually arrives as heavy bursts that an umbrella will not cover.
A dry bag for phone and documents
Worth it for one downpour caught between the taxi and the door.
September compared with August and October
September in Hiroshima is 3.8°C cooler than August and 16 mm wetter than it, which averages 29°C (84°F).
September in Hiroshima is 6°C warmer than October and 37 mm wetter than it, which averages 19°C (67°F).
Daylight in Hiroshima in September
On 15 September the sun is up for 12 hours 24 minutes in Hiroshima, rising about 05:53 and setting about 18:16 local time.
September ends 1 hour 1 minute shorter than it begins, so the last week of the month is a different length of day from the first.
That is 2 hours 3 minutes short of June, the longest-lit month here.
Where to stay in Hiroshima
Dates are a starting point for September.
Travel guides for Hiroshima
What to read before you book.
Hiroshima weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 6°C / 43°F | 49 mm |
| February | 7°C / 44°F | 66 mm |
| March | 10°C / 50°F | 123 mm |
| April | 15°C / 59°F | 151 mm |
| May | 20°C / 67°F | 170 mm |
| June | 24°C / 74°F | 228 mm |
| July | 27°C / 81°F | 299 mm |
| August | 29°C / 84°F | 137 mm |
| September | 25°C / 77°F | 153 mm |
| October | 19°C / 67°F | 116 mm |
| November | 13°C / 56°F | 67 mm |
| December | 8°C / 47°F | 58 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Hiroshima in September
September climate averages for Hiroshima, 1991–2020.
Hiroshima averages 25°C (77°F) in September, ranging from about 21°C (70°F) at night to 29°C (85°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Yes, a lot. September brings about 153 mm, which makes it one of the wetter months here — expect heavy bursts rather than all-day drizzle.
Yes. September averages 25°C (77°F) against 19°C (67°F) in October — 6°C warmer.
September is 3.8°C cooler than August, and 16 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, August to November, on temperature and rainfall together.
About 5.8 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 24 minutes of daylight in mid-September, against 14 hours 27 minutes in June and 9 hours 52 minutes in December.
On 15 September, sunrise is about 05:53 and sunset about 18:16 local time. Both shift across the month — the month ends 1 hour 1 minute shorter than it starts.
