Japan
Nagasaki in September
🌀 Late summer / typhoon seasonWarm, humid and often rainy. Watch for tropical cyclone risk.
🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics
Why September scores 8.2What goes into the score
How it works- Weather comfort7.2
- ✓Warm (29°C highs / 22°C lows)
- !Very humid/sticky (dew point 21.4°C)
- !Wet: ~187 mm rain, ~6 heavy-rain days
- Air quality9.9
- ✓Good (within WHO guideline) (PM2.5 ~6 µg/m³)
- Seasonal hazards8.5
- !Tropical cyclone: Peak of the Western Pacific typhoon season
- Safety baseline9.0
- ·Normal precautions
| Sep | Oct | |
|---|---|---|
| Score | 8.2 Very good | 9.1 Excellent |
| Season | 🌀 Late summer / typhoon season | 🍁 Autumn (koyo) |
| High / low | 29° / 22° | 24° / 17° |
| Rain | 187 mm | 102 mm |
| Humidity | dew pt 21° | dew pt 15° |
| PM2.5 | 6 µg/m³ | 9 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 & crowdsSeptember 2027
Long weekendThere's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.
- Silver Week 18–20 Sep · 3 days off in a row
Other public holidays: Autumnal Equinox Day (23 Sep)
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 actualFirst 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 datesFirst 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 datesMaples 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 locallyNagasaki 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.
No major events on our calendar for September.
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
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
Peace Park and Atomic Bomb Museum
Memorials and a museum near the hypocentre of the 1945 atomic bombing.
Glover Garden
A hillside park of Western-style merchant houses overlooking the harbour.
Ōura Church
Japan's oldest surviving church building, part of a UNESCO World Heritage listing for hidden Christian sites.
Dejima
The reconstructed artificial island where the Dutch traded during Japan's period of isolation.
Gunkanjima (Hashima)
An abandoned coal-mining island reached by boat tours from the harbour.
💡 Landings are often cancelled when seas are rough.
Mount Inasa
A peak with a ropeway and a well-known night view over the city and harbour.
Champon
Noodles in a rich pork and chicken broth with seafood and vegetables.
💡 Shinchi Chinatown and restaurants across the city
Sara udon
Crispy fried noodles topped with a thick seafood and vegetable sauce.
💡 Shinchi Chinatown
Castella
A moist sponge cake introduced by Portuguese traders.
💡 Long-established cake shops in the city
Toruko rice (Turkish rice)
A Western-style plate of pilaf, spaghetti and a pork cutlet.
💡 Cafés and diners
Kakuni manjū
Braised pork belly in a soft steamed bun.
💡 Shinchi Chinatown
Castella
Boxed sponge cake, the city's classic gift.
💡 Cake shops and Nagasaki station
Karasumi
Salted, dried mullet roe, a delicacy.
💡 Specialist food shops
Airport transfer Kiwitaxi
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