Beppu weather in September
September in Beppu: warm, soaked, with clean air — a gamble, with 16 rainy days.
#10 of 12 months in Beppu · #760 of 897 destinations to visit in September · comfort 63/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Beppu in September
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Beppu climate normals — September
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 22°C / 72°F | |
| Rainfall | 195 mm / 7.7 in | ⛈ soaked |
| Rainy days | 16 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 8.4 h/day | |
| Daylight | 12.4 h | |
| Wind | 12 km/h / 8 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Beppu in September — FAQ
- Is September a good time to visit Beppu?
- September in Beppu: warm, soaked, with clean air — a gamble, with 16 rainy days. It ranks #10 of 12 months for Beppu on SeasonMap's comfort score (63/100).
- What is the weather like in Beppu in September?
- In September, Beppu averages a daily high of 27.6°C and a low of 22.4°C, with about 194.5 mm of rain over roughly 16.4 rainy days.
- What is the air quality in Beppu in September?
- Beppu has a mean US Air Quality Index of about 47 in September.