Brisbane weather in September
September in Brisbane: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Brisbane · #28 of 604 destinations to visit in September · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Brisbane climate normals — September
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 33 mm / 1.3 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 11.9 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Brisbane in September — FAQ
- Is September a good time to visit Brisbane?
- September in Brisbane: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Brisbane on SeasonMap's comfort score (92/100).
- What is the weather like in Brisbane in September?
- In September, Brisbane averages a daily high of 24.3°C and a low of 14.1°C, with about 33 mm of rain over roughly 5 rainy days.
- What is the air quality in Brisbane in September?
- Brisbane has a mean US Air Quality Index of about 40 in September.