September is one of the cooler months of the year in Biloela, with average highs near 27.5°C and lows around 11.8°C (mean 19.7°C). It is one of the drier months, averaging 30 mm of rainfall and 60% relative humidity across the period.
September is one of the cooler months of the year in Biloela. Across 45 years of records, the warmest September in Biloela was 2013 — when the month averaged 22.6°C — while the coldest was 1984 at 17.1°C. Typical September days reach 27.5°C with nights near 11.8°C. The long-term trend is warming, about 0.4°C per decade.
September is one of the drier months in Biloela, averaging 30 mm of rainfall. The wettest September on record was 2010 with 157 mm, while the driest were 2000 and 2017 at 0 mm.
Relative humidity in Biloela during September averages 60%. The most humid September was 2010 at 79%, and the least humid was 1991 at 43%.
September receives about 5.9 kWh/m²/day of solar energy in Biloela. The sunniest Septembers were 1991 and 2003 at 6.6 kWh/m²/day, and the cloudiest was 2010 at 4.5.
Average wind speed in Biloela during September is 2.5 m/s. The windiest Septembers were 2016, 2020 and 2021, among others at 2.8 m/s, while the calmest were 2010 and 2012 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.9°C | 19.4°C | 20.0°C | 19.9°C | 20.3°C | +1.4°C |
| Avg High | 26.6°C | 27.1°C | 28.0°C | 27.6°C | 28.3°C | +1.7°C |
| Avg Low | 11.2°C | 11.6°C | 12.0°C | 12.1°C | 12.5°C | +1.3°C |
| Avg Rain | 29 mm | 46 mm | 17 mm | 35 mm | 17 mm | -12 mm |
September temperatures in Biloela have risen by about 1.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 2.8°C (1985) to a record high of 39°C (2013).
Rainfall in September is one of the drier months, averaging 30 mm, with a wettest year of 157 mm.
One of the best times to visit Biloela
September is one of the best times to visit Biloela. Expect days averaging 27.5°C and nights around 11.8°C (mean 19.7°C) — cooler than Biloela's yearly average — with low rainfall (30 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.5°C | 20.6°C | 12.7°C | 34.6°C | 8.3°C | 14 mm | 61% | 2.3 m/s | 6.1 |
| 2024 | 28.7°C | 20.6°C | 12.6°C | 32.5°C | 10.0°C | 10 mm | 61% | 2.3 m/s | 6.1 |
| 2023 | 29.8°C | 21.3°C | 12.9°C | 34.6°C | 9.6°C | 3 mm | 55% | 2.5 m/s | 6.2 |
| 2022 | 26.5°C | 19.4°C | 12.3°C | 32.4°C | 9.1°C | 41 mm | 66% | 2.4 m/s | 4.9 |
| 2021 | 28.0°C | 19.7°C | 11.4°C | 32.0°C | 5.8°C | 16 mm | 56% | 2.8 m/s | 6 |
| 2020 | 28.1°C | 20.5°C | 13.0°C | 33.3°C | 8.9°C | 16 mm | 63% | 2.8 m/s | 5.5 |
| 2019 | 29.8°C | 21.1°C | 12.4°C | 34.8°C | 5.9°C | 1 mm | 44% | 2.4 m/s | 6.4 |
| 2018 | 28.2°C | 20.2°C | 12.3°C | 31.1°C | 8.6°C | 20 mm | 59% | 2.6 m/s | 6.1 |
| 2017 | 30.8°C | 21.8°C | 12.9°C | 37.4°C | 6.9°C | 0 mm | 50% | 2.5 m/s | 6.5 |
| 2016 | 26.6°C | 19.9°C | 13.2°C | 30.8°C | 8.5°C | 61 mm | 67% | 2.8 m/s | 5.1 |
| 2015 | 25.9°C | 18.3°C | 10.7°C | 29.4°C | 6.3°C | 18 mm | 62% | 2.3 m/s | 6 |
| 2014 | 26.2°C | 18.5°C | 10.9°C | 30.4°C | 3.7°C | 55 mm | 63% | 2.4 m/s | 5.7 |
| 2013 🔥 | 31.3°C | 22.6°C | 13.9°C | 39.0°C | 9.3°C | 10 mm | 55% | 2.5 m/s | 6.3 |
| 2012 | 27.1°C | 19.2°C | 11.4°C | 33.5°C | 5.4°C | 21 mm | 62% | 2.2 m/s | 6 |
| 2011 | 26.0°C | 18.1°C | 10.2°C | 29.8°C | 3.4°C | 11 mm | 63% | 2.4 m/s | 6 |
| 2010 🌧️ | 24.5°C | 18.9°C | 13.3°C | 29.0°C | 8.3°C | 157 mm | 79% | 2.2 m/s | 4.5 |
| 2009 | 29.2°C | 20.7°C | 12.2°C | 34.2°C | 8.5°C | 27 mm | 55% | 2.5 m/s | 6.3 |
| 2008 | 27.0°C | 19.9°C | 12.7°C | 33.9°C | 7.6°C | 32 mm | 68% | 2.3 m/s | 5.8 |
| 2007 | 26.8°C | 19.5°C | 12.1°C | 32.6°C | 8.8°C | 38 mm | 65% | 2.5 m/s | 5.8 |
| 2006 | 26.3°C | 19.0°C | 11.7°C | 31.5°C | 6.2°C | 15 mm | 67% | 2.6 m/s | 5.8 |
| 2005 | 28.4°C | 20.4°C | 12.3°C | 33.0°C | 6.6°C | 7 mm | 60% | 2.5 m/s | 6.2 |
| 2004 | 27.3°C | 19.3°C | 11.2°C | 32.5°C | 4.5°C | 14 mm | 61% | 2.3 m/s | 6.2 |
| 2003 | 28.9°C | 20.3°C | 11.8°C | 34.7°C | 4.5°C | 3 mm | 56% | 2.3 m/s | 6.6 |
| 2002 | 27.9°C | 19.8°C | 11.7°C | 33.2°C | 6.8°C | 5 mm | 61% | 2.5 m/s | 6.3 |
| 2001 | 27.5°C | 19.7°C | 11.9°C | 30.4°C | 7.5°C | 30 mm | 60% | 2.6 m/s | 5.8 |
| 2000 | 30.2°C | 21.2°C | 12.3°C | 35.5°C | 8.1°C | 0 mm | 50% | 2.5 m/s | 6.4 |
| 1999 | 26.9°C | 19.5°C | 12.1°C | 30.2°C | 8.9°C | 18 mm | 64% | 2.7 m/s | 5.8 |
| 1998 | 24.8°C | 19.2°C | 13.6°C | 28.1°C | 7.4°C | 125 mm | 78% | 2.6 m/s | 5 |
| 1997 | 28.8°C | 21.2°C | 13.5°C | 33.7°C | 8.6°C | 37 mm | 59% | 2.5 m/s | 5.7 |
| 1996 | 28.0°C | 19.2°C | 10.4°C | 34.0°C | 4.4°C | 112 mm | 54% | 2.8 m/s | 6.1 |
| 1995 | 27.6°C | 19.8°C | 11.9°C | 30.7°C | 2.9°C | 13 mm | 58% | 2.6 m/s | 5.7 |
| 1994 | 28.0°C | 19.3°C | 10.7°C | 33.3°C | 5.1°C | 7 mm | 48% | 2.6 m/s | 6.4 |
| 1993 | 24.8°C | 18.0°C | 11.3°C | 32.6°C | 7.8°C | 76 mm | 68% | 2.7 m/s | 5.5 |
| 1992 | 26.7°C | 19.0°C | 11.2°C | 31.6°C | 6.6°C | 63 mm | 60% | 2.7 m/s | 5.7 |
| 1991 | 29.5°C | 20.7°C | 11.8°C | 33.8°C | 5.9°C | 1 mm | 43% | 2.4 m/s | 6.6 |
| 1990 | 25.6°C | 17.7°C | 9.7°C | 29.7°C | 4.9°C | 8 mm | 59% | 2.5 m/s | 5.8 |
| 1989 | 26.8°C | 18.7°C | 10.6°C | 32.3°C | 5.4°C | 11 mm | 59% | 2.4 m/s | 6.2 |
| 1988 | 26.1°C | 18.8°C | 11.5°C | 36.5°C | 6.5°C | 13 mm | 68% | 2.7 m/s | 5.8 |
| 1987 | 27.2°C | 19.0°C | 10.8°C | 30.5°C | 4.8°C | 8 mm | 56% | 2.4 m/s | 5.8 |
| 1986 | 26.7°C | 19.1°C | 11.4°C | 32.0°C | 3.9°C | 60 mm | 62% | 2.7 m/s | 5.9 |
| 1985 | 26.1°C | 18.2°C | 10.4°C | 32.6°C | 2.8°C | 42 mm | 58% | 2.6 m/s | 6 |
| 1984 ❄️ | 24.6°C | 17.1°C | 9.6°C | 28.3°C | 3.5°C | 80 mm | 62% | 2.4 m/s | 5.9 |
| 1983 | 27.5°C | 20.3°C | 13.2°C | 31.7°C | 7.5°C | 12 mm | 70% | 2.3 m/s | — |
| 1982 | 26.5°C | 18.9°C | 11.2°C | 33.2°C | 6.0°C | 35 mm | 60% | 2.4 m/s | — |
| 1981 | 28.1°C | 20.1°C | 12.1°C | 34.4°C | 3.9°C | 2 mm | 58% | 2.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 27.5°C with lows near 11.8°C (mean 19.7°C), based on 45 years of NASA POWER data.
September averages 30 mm of rainfall in Biloela, one of the drier months. The wettest on record was 157 mm in 2010.
The hottest September reached 39°C in 2013. The coldest dipped to 2.8°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.4°C. Daytime highs moved from 26.6°C to 28.3°C and overnight lows from 11.3°C to 12.4°C over the same span.
September is one of the cooler months of the year in Biloela and one of the drier months, so plan for around 27.5°C daytime highs and 11.8°C at night.
Not quite — September is the 5th coolest month in Biloela, averaging 19.7°C.
For September in Biloela, pack light layers you can adjust through the day, with typical highs of 27.5°C and lows of 11.8°C.
Relative humidity in September averages 60% — moderately humid.
Average wind speed in September is 2.5 m/s. The windiest September on record averaged 2.8 m/s (1996).
The wettest September on record was 2010 with 157 mm. On average, September sees 30 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Biloela behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.
