Nagasaki weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Nagasaki September weather at a glance
In September, Nagasaki averages 27.1°C, with typical highs of 30.7°C and lows of 24.4°C. The historical average is 16 wet days and 81% humidity.
Nagasaki September temperature & humidity
Nagasaki September rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Nagasaki in September
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 16 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
- DaytimeBreathable short sleeves, hat and sunscreen · average high 30.7°C
- Morning & eveningLight layer for air-conditioned rooms · average low 24.4°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Nagasaki September sunrise & sunset times
2026 September · Local time (Asia/Tokyo)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 05:55 | 18:46 | 12h 51m |
| 2026-09-15 | 06:04 | 18:27 | 12h 23m |
| 2026-09-30 | 06:14 | 18:07 | 11h 53m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Nagasaki
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Nagasaki weather like in September?
In September, Nagasaki averages 27.1°C, with typical highs of 30.7°C and lows of 24.4°C. The historical average is 16 wet days and 81% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Nagasaki in September?
There are about 16 wet days in September. Pack a rain jacket and water-resistant shoes.
What should I wear in Nagasaki in September?
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 16 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
What are the best months to visit Nagasaki?
Recent weather data rates May, October, November among the more comfortable months.
Where can I check Nagasaki weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Nagasaki in September?
On 2026-09-15, calculated sunrise is 06:04 and sunset is 18:27 in local time (Asia/Tokyo). Times vary by date and terrain.
Nagasaki weather by month
More Japan destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations