Kumamoto weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Kumamoto September weather at a glance
In September, Kumamoto averages 27.1°C, with typical highs of 31.5°C and lows of 23.5°C. The historical average is 14 wet days and 78% humidity.
Kumamoto September temperature & humidity
Kumamoto 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 Kumamoto in September
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 14 days in the month; pack a rain jacket and water-resistant shoes.
- DaytimeBreathable short sleeves, hat and sunscreen · average high 31.5°C
- Morning & eveningLight layer for air-conditioned rooms · average low 23.5°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Kumamoto September sunrise & sunset times
2026 September · Local time (Asia/Tokyo)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 05:52 | 18:43 | 12h 51m |
| 2026-09-15 | 06:01 | 18:24 | 12h 24m |
| 2026-09-30 | 06:10 | 18:04 | 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 Kumamoto
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 Kumamoto weather like in September?
In September, Kumamoto averages 27.1°C, with typical highs of 31.5°C and lows of 23.5°C. The historical average is 14 wet days and 78% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Kumamoto in September?
There are about 14 wet days in September. Pack a rain jacket and water-resistant shoes.
What should I wear in Kumamoto in September?
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 14 days in the month; pack a rain jacket and water-resistant shoes.
What are the best months to visit Kumamoto?
Recent weather data rates November, December among the more comfortable months.
Where can I check Kumamoto 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 Kumamoto in September?
On 2026-09-15, calculated sunrise is 06:01 and sunset is 18:24 in local time (Asia/Tokyo). Times vary by date and terrain.
Kumamoto 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