SeasonScore
Nagasaki, Japan
Photo: 663highland · CC BY-SA 3.0

Japan

Nagasaki in August

🥵 Summer

Hot, humid and often rainy. Watch for tropical cyclone risk.

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

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

‹
Every month at a glanceTap a month to open it
›

Why August scores 7.6What goes into the score

How it works
🌡️ 32° / 25°C🌧️ 218 mm💧 dew pt 24°🍃 PM2.5 8
  • Weather comfort6.1
    • ✓Hot (32°C highs / 25°C lows)
    • !Very humid/sticky (dew point 24.2°C)
    • !Wet: ~218 mm rain, ~5 heavy-rain days
  • Air quality9.6
    • ✓Good (within WHO guideline) (PM2.5 ~8 µg/m³)
  • Seasonal hazards8.5
    • !Tropical cyclone: Peak of the Western Pacific typhoon season
  • Safety baseline9.0
    • ·Normal precautions
Compare monthsPut August side by side with another month
AugOct
Score7.6 Very good9.1 Excellent
Season🥵 Summer🍁 Autumn (koyo)
High / low32° / 25°24° / 17°
Rain218 mm102 mm
Humiditydew pt 24°dew pt 15°
PM2.58 µg/m³9 µg/m³

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

Holidays & crowdsAugust 2027

Holiday week

A long local holiday falls this month. Expect crowds at sights, fuller trains and flights, and higher hotel prices on those dates. Book ahead.

  • Obon 13–16 Aug

    Not a public holiday, but many people take these days off to visit family: trains, highways and resorts are packed. Source: Japan National Tourism Organization

Other public holidays: Mountain Day (11 Aug)

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

Nature calendarBlossoms, leaves & seasons in Nagasaki

  • Cherry blossom 2026 (what actually happened)2026 actual
    First blooms 27 Mar 2026, full bloom 3 Apr 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 ~23 Mar, full bloom ~2 Apr

    Typical dates (1991–2020 normal). In 2021–2026 first blooms came between 14 Mar and 27 Mar (27 Mar in 2026). Blossoms last about a week after full bloom.

    Source: Japan Meteorological Agency

  • Autumn leavesTypical dates
    Maples turn red ~7 Dec

    Typical date the JMA observatory's maple turns red (1991–2020 normal); city parks are usually close to this.

    Source: Japan Meteorological Agency

Explore NagasakiEvents, sights, food & souvenirs

Check event dates locally

Nagasaki is a harbour city in Kyushu shaped by centuries of trade with China and Europe, and is visited for its peace memorials, churches and hillside views.

Events in August
Peace Memorial CeremonyEvery year9 August every year

A ceremony marking the anniversary of the 1945 atomic bombing.

Why go: A silent prayer is observed at 11:02, the time of the explosion.

Where: Peace Park

Shōrō NagashiEvery year15 August every year

Families parade decorated spirit boats for the recently deceased, with loud firecrackers.

Why go: Very noisy; ear protection helps.

Where: Central streets

Coming up later

Nagasaki KunchiEvery year7-9 October every year

The festival of Suwa Shrine with dragon dances, ship floats and performances by city districts.

Why go: Seating at the main venue needs tickets; street performances can be seen for free.

Where: Suwa Shrine and city streets

Nagasaki Lantern FestivalDate variesLunar calendar — about two weeks from Chinese New Year, late January to February; date moves each year

Thousands of Chinese lanterns light the city, with parades and dragon dances.

Why go: The city's biggest winter event; book early.

Where: Shinchi Chinatown, Minato Park and city centre

Plan this tripTickets, data and transfers for Nagasaki

Airport transfer Kiwitaxi

Partner links: we may earn a small commission at no extra cost to you. It never affects scores.