September is one of the cooler months of the year in Leonora, with average highs near 25.5°C and lows around 9°C (mean 17.3°C). It is one of the drier months, averaging 8 mm of rainfall and 44% relative humidity across the period.
September is one of the cooler months of the year in Leonora. Across 45 years of records, the warmest September in Leonora was 2023 — when the month averaged 21.9°C — while the coldest were 1992 and 2016 at 14.1°C. Typical September days reach 25.5°C with nights near 9°C. The long-term trend is warming, about 0.2°C per decade.
September is one of the drier months in Leonora, averaging 8 mm of rainfall. The wettest September on record was 1984 with 33 mm, while the driest were 1988, 2019 and 2020 at 0 mm.
Relative humidity in Leonora during September averages 44%. The most humid September was 1992 at 62%, and the least humid was 2023 at 34%.
September receives about 6.1 kWh/m²/day of solar energy in Leonora. The sunniest Septembers were 2002 and 2007 at 6.5 kWh/m²/day, and the cloudiest was 2022 at 5.3.
Average wind speed in Leonora during September is 3.4 m/s. The windiest Septembers were 1999, 2006 and 2012, among others at 3.8 m/s, while the calmest were 1986, 1997 and 2000 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.3°C | 16.8°C | 17.2°C | 17.3°C | 18.2°C | +0.9°C |
| Avg High | 25.5°C | 24.9°C | 25.7°C | 25.5°C | 26.5°C | +1°C |
| Avg Low | 9.0°C | 8.8°C | 8.8°C | 9.0°C | 9.9°C | +0.9°C |
| Avg Rain | 10 mm | 9 mm | 8 mm | 7 mm | 8 mm | -1 mm |
September temperatures in Leonora have risen by about 0.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 1.2°C (2004) to a record high of 38.1°C (2023).
Rainfall in September is one of the drier months, averaging 8 mm, with a wettest year of 33 mm.
A good time to visit Leonora
September is a good time to visit Leonora, with days averaging 25.5°C and nights around 9°C (mean 17.3°C, cooler than Leonora's yearly average) and low rainfall. October and April are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.3°C | 17.0°C | 8.7°C | 32.4°C | 4.3°C | 3 mm | 41% | 3.4 m/s | 6.3 |
| 2024 | 26.3°C | 18.2°C | 10.0°C | 34.3°C | 4.2°C | 14 mm | 41% | 3.6 m/s | 6 |
| 2023 🔥 | 30.5°C | 21.9°C | 13.2°C | 38.1°C | 5.0°C | 1 mm | 34% | 3.7 m/s | 6.1 |
| 2022 | 23.5°C | 16.2°C | 8.9°C | 29.4°C | 5.5°C | 28 mm | 49% | 3.6 m/s | 5.3 |
| 2021 | 25.4°C | 16.7°C | 8.1°C | 32.3°C | 2.2°C | 5 mm | 37% | 3.6 m/s | 6.4 |
| 2020 | 27.7°C | 19.2°C | 10.7°C | 34.9°C | 5.9°C | 0 mm | 38% | 3.6 m/s | 6.1 |
| 2019 | 29.0°C | 20.1°C | 11.2°C | 36.6°C | 3.3°C | 0 mm | 35% | 3.3 m/s | 6.3 |
| 2018 | 26.2°C | 17.7°C | 9.2°C | 35.3°C | 3.3°C | 7 mm | 37% | 3.4 m/s | 6.2 |
| 2017 | 25.1°C | 17.3°C | 9.5°C | 34.4°C | 2.1°C | 4 mm | 45% | 3.5 m/s | 6 |
| 2016 | 22.2°C | 14.1°C | 6.1°C | 32.3°C | 2.0°C | 3 mm | 47% | 3.4 m/s | 6.4 |
| 2015 | 26.2°C | 17.3°C | 8.4°C | 33.4°C | 1.4°C | 1 mm | 38% | 3.3 m/s | 6.4 |
| 2014 | 27.9°C | 19.7°C | 11.5°C | 35.2°C | 5.6°C | 5 mm | 41% | 3.7 m/s | 6 |
| 2013 | 24.9°C | 17.4°C | 9.8°C | 32.2°C | 6.8°C | 25 mm | 50% | 3.4 m/s | 5.7 |
| 2012 | 26.3°C | 18.0°C | 9.7°C | 32.7°C | 4.2°C | 4 mm | 40% | 3.8 m/s | 6.2 |
| 2011 | 24.6°C | 16.2°C | 7.8°C | 30.9°C | 4.3°C | 7 mm | 48% | 3.2 m/s | 6.4 |
| 2010 | 22.8°C | 14.8°C | 6.9°C | 33.2°C | 3.7°C | 19 mm | 53% | 3.2 m/s | 6.1 |
| 2009 | 23.7°C | 15.5°C | 7.2°C | 31.1°C | 3.3°C | 16 mm | 45% | 3.6 m/s | 6.3 |
| 2008 | 26.2°C | 17.6°C | 8.9°C | 34.9°C | 3.3°C | 3 mm | 41% | 3.6 m/s | 6.3 |
| 2007 | 26.9°C | 18.0°C | 9.1°C | 34.2°C | 5.1°C | 3 mm | 37% | 3.5 m/s | 6.5 |
| 2006 | 26.8°C | 18.9°C | 11.0°C | 34.6°C | 6.4°C | 13 mm | 42% | 3.8 m/s | 5.7 |
| 2005 | 24.7°C | 16.4°C | 8.1°C | 33.9°C | 1.8°C | 9 mm | 46% | 3.6 m/s | 6.1 |
| 2004 | 25.0°C | 16.8°C | 8.5°C | 34.3°C | 1.2°C | 7 mm | 46% | 3.1 m/s | 5.7 |
| 2003 | 25.1°C | 16.9°C | 8.6°C | 33.9°C | 4.6°C | 11 mm | 48% | 3.6 m/s | 6.2 |
| 2002 | 25.8°C | 17.1°C | 8.3°C | 33.5°C | 3.5°C | 5 mm | 36% | 3.4 m/s | 6.5 |
| 2001 | 25.5°C | 17.0°C | 8.5°C | 34.3°C | 1.9°C | 10 mm | 44% | 3.5 m/s | 6 |
| 2000 | 26.9°C | 18.1°C | 9.3°C | 34.3°C | 3.0°C | 3 mm | 44% | 2.9 m/s | 6.3 |
| 1999 | 25.8°C | 17.5°C | 9.3°C | 35.3°C | 3.0°C | 6 mm | 43% | 3.8 m/s | 6 |
| 1998 | 24.0°C | 16.1°C | 8.3°C | 33.7°C | 2.2°C | 5 mm | 52% | 3.7 m/s | 6.2 |
| 1997 | 25.6°C | 17.5°C | 9.5°C | 32.0°C | 3.8°C | 12 mm | 48% | 2.9 m/s | 6.3 |
| 1996 | 24.4°C | 16.5°C | 8.6°C | 31.7°C | 4.7°C | 6 mm | 52% | 3.8 m/s | 6.2 |
| 1995 | 26.0°C | 18.0°C | 10.1°C | 33.0°C | 4.5°C | 13 mm | 47% | 3.1 m/s | 5.7 |
| 1994 | 27.3°C | 18.7°C | 10.1°C | 35.0°C | 4.4°C | 2 mm | 38% | 3.7 m/s | 6.1 |
| 1993 | 23.1°C | 15.4°C | 7.6°C | 29.7°C | 2.2°C | 10 mm | 51% | 3.2 m/s | 5.9 |
| 1992 ❄️ | 21.3°C | 14.1°C | 7.0°C | 28.3°C | 3.7°C | 26 mm | 62% | 3.4 m/s | 5.8 |
| 1991 | 26.0°C | 17.4°C | 8.9°C | 35.7°C | 3.2°C | 2 mm | 43% | 3.3 m/s | 6.3 |
| 1990 | 25.5°C | 16.9°C | 8.2°C | 33.9°C | 2.4°C | 6 mm | 45% | 3.2 m/s | 6.4 |
| 1989 | 25.8°C | 17.2°C | 8.5°C | 33.4°C | 4.4°C | 0 mm | 42% | 3.2 m/s | 6.4 |
| 1988 | 26.0°C | 17.5°C | 8.9°C | 31.2°C | 5.4°C | 0 mm | 41% | 3.1 m/s | 6.2 |
| 1987 | 26.1°C | 17.7°C | 9.3°C | 35.9°C | 4.1°C | 1 mm | 37% | 3.2 m/s | 6.4 |
| 1986 | 24.9°C | 16.8°C | 8.7°C | 30.5°C | 3.9°C | 16 mm | 48% | 2.9 m/s | 5.9 |
| 1985 | 25.8°C | 17.7°C | 9.6°C | 31.4°C | 3.6°C | 6 mm | 42% | 3.2 m/s | 6.2 |
| 1984 🌧️ | 21.7°C | 14.2°C | 6.6°C | 26.8°C | 3.3°C | 33 mm | 51% | 3.3 m/s | 5.8 |
| 1983 | 27.2°C | 18.9°C | 10.6°C | 35.7°C | 5.9°C | 10 mm | 41% | 3.5 m/s | — |
| 1982 | 24.5°C | 16.5°C | 8.5°C | 30.6°C | 2.6°C | 21 mm | 46% | 3.3 m/s | — |
| 1981 | 27.6°C | 19.1°C | 10.6°C | 34.0°C | 3.6°C | 0 mm | 38% | 3.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 25.5°C with lows near 9°C (mean 17.3°C), based on 45 years of NASA POWER data.
September averages 8 mm of rainfall in Leonora, one of the drier months. The wettest on record was 33 mm in 1984.
The hottest September reached 38.1°C in 2023. The coldest dipped to 1.2°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.7°C. Daytime highs moved from 25.4°C to 26.2°C and overnight lows from 9.2°C to 9.8°C over the same span.
September is one of the cooler months of the year in Leonora and one of the drier months, so plan for around 25.5°C daytime highs and 9°C at night.
Not quite — September is the 5th coolest month in Leonora, averaging 17.3°C.
For September in Leonora, pack light layers you can adjust through the day, with typical highs of 25.5°C and lows of 9°C.
Relative humidity in September averages 44% — relatively dry.
Average wind speed in September is 3.4 m/s. The windiest September on record averaged 3.8 m/s (1996).
The wettest September on record was 1984 with 33 mm. On average, September sees 8 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 Leonora 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.
