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Yakushima weather in September 2026
Expect daytime maximum temperatures of 25°C in Yakushima, Japan in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 330 mm of rainfall in the month.
- 25°C max day temperature
25 - 5 hours of sunshine per day
- 20 days with some rainfall
20 - 20°C min night temperature
20 - 12 hours of daylight per day
12 - Moderate heat & humidity
M - 330 mm of monthly rainfall
330 - 9 (Very High) UV index
9 - 28°C sea temperature
28
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Recommended for Japan
The September weather guide for Japan (Yakushima) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Japan
How hot is it in Yakushima in September?
Daytime temperatures usually reach 27°C in Yakushima in September with low heat and humidity, falling to 20°C at night.
How sunny is it in Yakushima in September?
There are normally 4 hours of bright sunshine each day in Yakushima in September - that's 31% of daylight hours.
How warm is the sea around Yakushima in September?
The average sea temperature around Yakushima in September is 25°C.
Does it rain in Yakushima in September?
There are usually 19 days with some rain in Yakushima in September and the average monthly rainfall is 181mm.
What is the chance of a typhoon in Yakushima in September?
On average 1.4 days in September in Yakushima are likely to be affected by the passage of one or more tropical storms.
Yakushima September sunrise & sunset times
Browse the sunrise and sunset times for Yakushima in September 2026. Select a month to view Yakushima sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 05:54 | 18:41 |
| Tuesday, 15th September 2026 | 06:02 | 18:23 |
| Wednesday, 30th September 2026 | 06:10 | 18:04 |
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