SeasonScore
Hiroshima, Japan
Photo: Danapit · CC BY-SA 3.0

Japan

Hiroshima in July

🥵 Summer

Warm, humid and very wet.

🎒 Pack: light, breathable clothes & sunscreen · compact umbrella or rain jacket · quick-dry fabrics

Best months: Nov (9.1), May (9.0), Oct (9.0)

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Why July scores 7.3What goes into the score

How it works
🌡️ 31° / 24°C🌧️ 280 mm💧 dew pt 23°🍃 PM2.5 21
  • Weather comfort6.1
    • ✓Warm (31°C highs / 24°C lows)
    • !Very humid/sticky (dew point 22.8°C)
    • !Wet: ~280 mm rain, ~7 heavy-rain days
  • Air quality7.6
    • ✓Moderate (PM2.5 ~21 µg/m³)
  • Seasonal hazards9.0
    • !Tropical cyclone: Edge of the Western Pacific typhoon season
    • !Flood: ~7 heavy-rain days in an average July
  • Safety baseline9.0
    • ·Normal precautions
Compare monthsPut July side by side with another month
JulNov
Score7.3 Good9.1 Excellent
Season🥵 Summer🍁 Autumn (koyo)
High / low31° / 24°18° / 9°
Rain280 mm69 mm
Humiditydew pt 23°dew pt 8°
PM2.521 µg/m³13 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Hiroshima weather-station normals. Rainfall: Hiroshima weather-station normals (national met service).

Holidays & crowdsJuly 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Marine Day 17–19 Jul · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Nature calendarBlossoms, leaves & seasons in Hiroshima

  • 2026 forecast: Miyajima2026 forecast
    Peak from ~18 Nov 2026

    Last year the peak began 21 Nov. JWA expects most of Japan to be on time or a little later than usual this year.

    Source: Japan Weather Association (tenki.jp), forecast 14 Oct 2026

  • Cherry blossom 2026 (what actually happened)2026 actual
    First blooms 19 Mar 2026, full bloom 30 Mar 2026

    Observed by JMA at the city's official sample tree. The 2027 forecast isn't out yet: Japanese weather companies such as the Japan Weather Association usually publish the first one in January, and we add it then.

    Source: Japan Meteorological Agency

  • Cherry blossomTypical dates
    First blooms ~25 Mar, full bloom ~3 Apr

    Typical dates (1991–2020 normal). In 2021–2026 first blooms came between 11 Mar and 26 Mar (19 Mar in 2026). Blossoms last about a week after full bloom.

    Source: Japan Meteorological Agency

  • Autumn leaves: Miyajima, Momijidani ParkTypical dates
    Usually mid-Nov to late-Nov

    Usual peak viewing window for this spot.

    Source: Japan Weather Association (tenki.jp)

Explore HiroshimaEvents, sights, food & souvenirs

Check event dates locally

A Japanese city rebuilt after the 1945 atomic bombing, now a centre for peace remembrance and gateway to the island of Miyajima.

Events in July
Gion MatsuriAcross Japan

Kyoto's huge month-long festival with float parades and street food.

Coming up later

Peace Memorial CeremonyEvery year6 August every year

A morning ceremony marking the anniversary of the atomic bombing, with a moment of silence at 8:15.

Why go: The park is crowded and solemn; dress and behave respectfully.

Where: Peace Memorial Park

Floating lantern ceremonyEvery yearEvening of 6 August every year

Lanterns carrying messages of peace are floated down the river in memory of the victims.

Why go: The riverbanks get very crowded; arrive early.

Where: Motoyasu River beside the Atomic Bomb Dome

Cherry blossom seasonDate variesUsually late March to early April

Cherry trees bloom across the city and island.

Why go: Exact timing varies; check bloom forecasts.

Where: Peace Memorial Park, Hiroshima Castle and Miyajima