September · Japan
Best time to visit Ishigaki in September Weather, crowds & prices
Weather in Ishigaki in September
Average temperature 28°C, 259 mm of rain, about 27 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.2/10
Ranked #8 of 12 months
- Avg temp
- 28°C
- Rainfall
- 259 mm
- Humidity
- 81%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Ishigaki scores 7.2/10 for beach and coastal travel - ranked #8 of 12. Expect around 28°C, 259 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Ishigaki's coral reefs and beaches sit at the southern end of the Japanese archipelago.
September in Ishigaki — reliably good (8th best month)
Days in September average 28°C (83°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 259 mm, but with about 27 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 7.2/10 on the same scale — 8th of 12 months, versus 7.9/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Ishigaki in September?
- In September, Ishigaki averages 28°C, 259 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 7.2/10.
- Is September a good time to visit Ishigaki?
- September earns a 7.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Ishigaki in September?
- Expect about 259 mm of rain in September. Average humidity is 81% and there are about 27 days with 6+ hours of sunshine.
Curated in Ishigaki
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Ishigaki, Japan. Live activities and tours from GetYourGuide, matched to this destination.