September is one of the warmer months of the year in Bathurst, with average highs near 19.2°C and lows around 8.8°C (mean 14°C). It is about average for rainfall, averaging 73 mm of rainfall and 78% relative humidity across the period.
September is one of the warmer months of the year in Bathurst. Across 45 years of records, the warmest September in Bathurst was 1999 — when the month averaged 17.1°C — while the coldest was 1986 at 10.1°C. Typical September days reach 19.2°C with nights near 8.8°C. The long-term trend is warming, about 0.7°C per decade.
September is about average for rainfall in Bathurst, averaging 73 mm of rainfall. The wettest September on record was 1999 with 156 mm, while the driest was 2020 at 23 mm.
Relative humidity in Bathurst during September averages 78%. The most humid September was 1982 at 86%, and the least humid was 2025 at 68%.
September receives about 3.7 kWh/m²/day of solar energy in Bathurst. The sunniest Septembers were 2009 and 2025 at 4.3 kWh/m²/day, and the cloudiest was 2010 at 3.1.
Average wind speed in Bathurst during September is 0.3 m/s. The windiest Septembers were 2023, 2024 and 2025, among others at 0.3 m/s, while the calmest were 1992, 1999 and 2003, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.6°C | 13.6°C | 14.3°C | 14.5°C | 15.6°C | +3°C |
| Avg High | 17.5°C | 18.9°C | 19.7°C | 19.6°C | 21.1°C | +3.6°C |
| Avg Low | 7.7°C | 8.3°C | 8.9°C | 9.3°C | 10.1°C | +2.4°C |
| Avg Rain | 76 mm | 68 mm | 73 mm | 82 mm | 64 mm | -12 mm |
September temperatures in Bathurst have risen by about 2.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -0.3°C (1991) to a record high of 32.6°C (2010).
Rainfall in September is about average for rainfall, averaging 73 mm, with a wettest year of 156 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.6°C per decade, widening the gap between day and night.
One of the best times to visit Bathurst
September is one of the best times to visit Bathurst. Expect days averaging 19.2°C and nights around 8.8°C (mean 14°C) — warmer than Bathurst's yearly average — with moderate rainfall (73 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 | 22.3°C | 15.9°C | 9.5°C | 29.4°C | 4.6°C | 35 mm | 68% | 0.3 m/s | 4.3 |
| 2024 | 21.9°C | 16.4°C | 11.0°C | 30.7°C | 7.7°C | 53 mm | 76% | 0.3 m/s | 3.9 |
| 2023 | 21.9°C | 16.6°C | 11.2°C | 30.4°C | 4.5°C | 76 mm | 83% | 0.3 m/s | 3.4 |
| 2022 | 20.5°C | 15.1°C | 9.8°C | 28.4°C | 3.3°C | 44 mm | 74% | 0.3 m/s | 3.9 |
| 2021 | 19.6°C | 15.1°C | 10.5°C | 27.0°C | 6.1°C | 154 mm | 83% | 0.3 m/s | 3.4 |
| 2020 | 20.3°C | 14.5°C | 8.7°C | 27.2°C | 1.5°C | 23 mm | 68% | 0.3 m/s | 4 |
| 2019 | 17.7°C | 12.6°C | 7.4°C | 25.9°C | 2.6°C | 99 mm | 79% | 0.3 m/s | 3.6 |
| 2018 | 20.1°C | 14.4°C | 8.7°C | 29.5°C | 1.1°C | 61 mm | 74% | 0.3 m/s | 4 |
| 2017 | 21.3°C | 15.7°C | 10.2°C | 27.3°C | 2.5°C | 68 mm | 78% | 0.3 m/s | 3.5 |
| 2016 | 19.8°C | 14.8°C | 9.7°C | 28.6°C | 3.4°C | 85 mm | 80% | 0.3 m/s | 3.8 |
| 2015 | 22.1°C | 16.6°C | 11.0°C | 30.2°C | 3.1°C | 92 mm | 76% | 0.3 m/s | 4 |
| 2014 | 19.6°C | 14.3°C | 8.9°C | 27.9°C | 2.3°C | 38 mm | 73% | 0.3 m/s | 4 |
| 2013 | 18.0°C | 13.3°C | 8.7°C | 23.8°C | 3.8°C | 134 mm | 84% | 0.3 m/s | 3.2 |
| 2012 | 19.8°C | 14.5°C | 9.3°C | 28.0°C | 3.9°C | 56 mm | 77% | 0.3 m/s | 3.6 |
| 2011 | 19.4°C | 14.3°C | 9.3°C | 24.1°C | 4.1°C | 60 mm | 84% | 0.3 m/s | 4 |
| 2010 | 18.5°C | 14.0°C | 9.4°C | 32.6°C | 1.0°C | 123 mm | 82% | 0.3 m/s | 3.1 |
| 2009 | 19.6°C | 13.8°C | 8.0°C | 26.7°C | 0.5°C | 51 mm | 74% | 0.3 m/s | 4.3 |
| 2008 | 18.4°C | 13.5°C | 8.7°C | 25.9°C | 0.9°C | 115 mm | 82% | 0.3 m/s | 3.6 |
| 2007 | 19.0°C | 13.7°C | 8.5°C | 29.4°C | 3.3°C | 69 mm | 76% | 0.3 m/s | 4 |
| 2006 | 18.9°C | 13.6°C | 8.2°C | 24.7°C | 3.8°C | 76 mm | 81% | 0.3 m/s | 3.7 |
| 2005 | 19.7°C | 14.9°C | 10.1°C | 27.3°C | 3.2°C | 116 mm | 78% | 0.3 m/s | 3.8 |
| 2004 | 19.5°C | 13.9°C | 8.2°C | 26.2°C | 3.7°C | 55 mm | 75% | 0.3 m/s | 4 |
| 2003 | 22.1°C | 16.3°C | 10.6°C | 30.5°C | 4.2°C | 30 mm | 77% | 0.2 m/s | 4.1 |
| 2002 | 20.5°C | 14.9°C | 9.3°C | 29.0°C | 0.5°C | 85 mm | 77% | 0.3 m/s | 3.4 |
| 2001 | 20.7°C | 15.3°C | 10.0°C | 31.1°C | 3.3°C | 74 mm | 74% | 0.3 m/s | 4.1 |
| 2000 | 18.7°C | 13.1°C | 7.6°C | 24.9°C | -0.2°C | 63 mm | 73% | 0.3 m/s | 3.9 |
| 1999 🔥 🌧️ | 22.3°C | 17.1°C | 11.8°C | 31.4°C | 5.1°C | 156 mm | 80% | 0.2 m/s | 3.5 |
| 1998 | 17.8°C | 13.4°C | 9.0°C | 23.7°C | 4.7°C | 86 mm | 81% | 0.3 m/s | 3.5 |
| 1997 | 18.7°C | 13.6°C | 8.5°C | 26.4°C | 2.2°C | 32 mm | 77% | 0.3 m/s | 3.2 |
| 1996 | 18.5°C | 13.6°C | 8.7°C | 28.5°C | 3.3°C | 48 mm | 75% | 0.3 m/s | 3.5 |
| 1995 | 18.8°C | 12.6°C | 6.4°C | 25.0°C | 0.6°C | 54 mm | 69% | 0.3 m/s | 4.2 |
| 1994 | 18.1°C | 12.9°C | 7.7°C | 24.3°C | 3.5°C | 65 mm | 78% | 0.3 m/s | 3.8 |
| 1993 | 18.9°C | 13.6°C | 8.2°C | 28.6°C | 2.8°C | 70 mm | 74% | 0.3 m/s | 3.8 |
| 1992 | 20.6°C | 14.7°C | 8.7°C | 27.1°C | 1.6°C | 38 mm | 75% | 0.2 m/s | 3.7 |
| 1991 | 16.9°C | 11.9°C | 6.9°C | 25.7°C | -0.3°C | 81 mm | 79% | 0.3 m/s | 3.5 |
| 1990 | 17.9°C | 12.6°C | 7.2°C | 24.4°C | 2.1°C | 53 mm | 80% | 0.3 m/s | 3.5 |
| 1989 | 18.4°C | 13.4°C | 8.4°C | 28.4°C | -0.2°C | 69 mm | 80% | 0.3 m/s | 3.8 |
| 1988 | 16.8°C | 12.0°C | 7.2°C | 23.3°C | 3.0°C | 61 mm | 79% | 0.3 m/s | 3.6 |
| 1987 | 17.2°C | 12.8°C | 8.4°C | 27.2°C | -0.2°C | 109 mm | 82% | 0.3 m/s | 3.4 |
| 1986 ❄️ | 15.1°C | 10.1°C | 5.0°C | 22.6°C | 1.5°C | 86 mm | 81% | 0.3 m/s | 3.7 |
| 1985 | 19.7°C | 14.1°C | 8.5°C | 28.2°C | 4.0°C | 53 mm | 75% | 0.3 m/s | 3.8 |
| 1984 | 16.9°C | 11.8°C | 6.7°C | 25.3°C | 1.1°C | 32 mm | 77% | 0.3 m/s | 4.1 |
| 1983 | 19.4°C | 14.2°C | 9.0°C | 29.9°C | 3.4°C | 75 mm | 81% | 0.2 m/s | — |
| 1982 | 17.1°C | 12.4°C | 7.8°C | 26.0°C | 0.6°C | 100 mm | 86% | 0.3 m/s | — |
| 1981 | 16.9°C | 12.4°C | 7.9°C | 23.8°C | 2.1°C | 98 mm | 84% | 0.3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 19.2°C with lows near 8.8°C (mean 14°C), based on 45 years of NASA POWER data.
September averages 73 mm of rainfall in Bathurst, about average for rainfall. The wettest on record was 156 mm in 1999.
The hottest September reached 32.6°C in 2010. The coldest dipped to -0.3°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.8°C. Daytime highs moved from 18°C to 21.2°C and overnight lows from 8°C to 10.4°C over the same span.
September is one of the warmer months of the year in Bathurst and about average for rainfall, so plan for around 19.2°C daytime highs and 8.8°C at night.
Not quite — September is the 9th coolest month in Bathurst, averaging 14°C.
For September in Bathurst, pack light layers you can adjust through the day, with typical highs of 19.2°C and lows of 8.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 78% — quite humid.
Average wind speed in September is 0.3 m/s. The windiest September on record averaged 0.3 m/s (1981).
The wettest September on record was 1999 with 156 mm. On average, September sees 73 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 Bathurst 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.
