Brisbane weather in September
In September, Brisbane has an average high of 24 °C75 °F and an average low of 15 °C59 °F, with about 38 mm1.5 in of precipitation. It is the 8th warmest month of the year and the driest.
How September compares with other months
Compared with August, September is 2.5 °C4.5 °F warmer on average and drier by 7 mm0.3 in. Compared with October, September is 2 °C3.7 °F cooler on average and drier by 43 mm1.7 in. Daylight lasts about 12.0 hours around the middle of the month. Average relative humidity is 68% and the average cloud amount 34%.
Is September a good time to visit Brisbane?
Yes — September is one of the most comfortable months to visit Brisbane by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in September
For Brisbane in September, pack light layers — T-shirts plus a light sweater or jacket.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Brisbane | 2475 | 1559 | 381.5 |
| Gold Coast | 2576 | 1457 | 351.4 |
| Sunshine Coast | 2373 | 1763 | 471.9 |
| Toowoomba | 2474 | 847 | 291.1 |
| Armidale | 1864 | 540 | 421.6 |
| Gladstone | 2680 | 1660 | 261.0 |
| Port Macquarie | 2169 | 1662 | 441.7 |
| Rockhampton | 2882 | 1559 | 251.0 |
| Maitland | 2373 | 1049 | 411.6 |
Nearby places that are more than 1 °C1.8 °F warmer in September: Gladstone and Rockhampton; cooler: Toowoomba, Armidale and Maitland.
Other months in Brisbane
- January29 °C84 °F / 22 °C72 °F
- February28 °C83 °F / 22 °C72 °F
- March27 °C81 °F / 21 °C70 °F
- April25 °C77 °F / 19 °C66 °F
- May23 °C73 °F / 16 °C60 °F
- June21 °C69 °F / 14 °C57 °F
- July20 °C68 °F / 12 °C54 °F
- August21 °C70 °F / 13 °C55 °F
- September24 °C75 °F / 15 °C59 °F
- October26 °C78 °F / 17 °C63 °F
- November27 °C81 °F / 19 °C67 °F
- December28 °C83 °F / 21 °C70 °F
Frequently asked questions
How warm is Brisbane in September?
In September the average high in Brisbane is 24 °C (75 °F) and the average low is 15 °C (59 °F).
Does it rain a lot in Brisbane in September?
On average about 38 mm (1.5 in) of precipitation falls in September; it ranks 12th of the 12 months.
Is September the warmest month in Brisbane?
No. The warmest month in Brisbane is January, with an average high of 29 °C (84 °F). The coldest month is July, with an average low of 12 °C (54 °F).
How long is the day in Brisbane in September?
In the middle of September the day in Brisbane lasts about 12.0 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Brisbane in September?
The average relative humidity in September is about 68%. This is a long-term average for the whole day.
How cloudy is Brisbane in September?
On average about 34% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.