September is one of the cooler months of the year in Longreach, with average highs near 30.9°C and lows around 14.1°C (mean 22.5°C). It is one of the drier months, averaging 11 mm of rainfall and 36% relative humidity across the period.
September is one of the cooler months of the year in Longreach. Across 45 years of records, the warmest September in Longreach was 2013 — when the month averaged 25.5°C — while the coldest was 1984 at 18.9°C. Typical September days reach 30.9°C with nights near 14.1°C. The long-term trend is warming, about 0.5°C per decade.
September is one of the drier months in Longreach, averaging 11 mm of rainfall. The wettest September on record was 2010 with 98 mm, while the driest were 2018, 2019 and 2023, among others at 0 mm.
Relative humidity in Longreach during September averages 36%. The most humid September was 2010 at 64%, and the least humid was 2019 at 22%.
September receives about 6.4 kWh/m²/day of solar energy in Longreach. The sunniest September was 1989 at 6.9 kWh/m²/day, and the cloudiest was 2010 at 5.1.
Average wind speed in Longreach during September is 3.3 m/s. The windiest Septembers were 1993 and 2021 at 3.8 m/s, while the calmest were 1984 and 2007 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.5°C | 22.3°C | 22.9°C | 22.6°C | 23.5°C | +2°C |
| Avg High | 30.0°C | 30.6°C | 31.4°C | 31.0°C | 31.8°C | +1.8°C |
| Avg Low | 13.0°C | 13.9°C | 14.4°C | 14.2°C | 15.3°C | +2.3°C |
| Avg Rain | 2 mm | 11 mm | 10 mm | 21 mm | 8 mm | +6 mm |
September temperatures in Longreach have risen by about 2.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 3.9°C (1984) to a record high of 41.5°C (1988).
Rainfall in September is one of the drier months, averaging 11 mm, with a wettest year of 98 mm.
One of the best times to visit Longreach
September is one of the best times to visit Longreach. Expect days averaging 30.9°C and nights around 14.1°C (mean 22.5°C) — cooler than Longreach's yearly average — with low rainfall (11 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 | 32.1°C | 23.7°C | 15.2°C | 38.5°C | 6.7°C | 3 mm | 32% | 3.4 m/s | 6.4 |
| 2024 | 32.6°C | 24.3°C | 16.1°C | 36.9°C | 12.7°C | 1 mm | 30% | 3.6 m/s | 6.4 |
| 2023 | 32.7°C | 24.3°C | 15.8°C | 37.8°C | 11.6°C | 0 mm | 29% | 3.3 m/s | 6.6 |
| 2022 | 30.0°C | 21.9°C | 13.8°C | 37.8°C | 8.4°C | 22 mm | 47% | 3.3 m/s | 5.9 |
| 2021 | 31.5°C | 23.1°C | 14.7°C | 36.3°C | 8.4°C | 2 mm | 31% | 3.8 m/s | 6.5 |
| 2020 | 31.7°C | 24.0°C | 16.3°C | 35.8°C | 10.6°C | 22 mm | 40% | 3.5 m/s | 6.3 |
| 2019 | 32.3°C | 23.0°C | 13.7°C | 36.7°C | 7.4°C | 0 mm | 22% | 3.2 m/s | 6.7 |
| 2018 | 31.6°C | 23.0°C | 14.4°C | 36.3°C | 8.8°C | 0 mm | 28% | 3.1 m/s | 6.8 |
| 2017 | 33.2°C | 24.2°C | 15.2°C | 41.1°C | 8.9°C | 0 mm | 24% | 3.1 m/s | 6.8 |
| 2016 | 28.1°C | 20.6°C | 13.1°C | 33.1°C | 6.8°C | 83 mm | 58% | 3.3 m/s | 5.2 |
| 2015 | 30.4°C | 22.2°C | 13.9°C | 35.1°C | 10.1°C | 1 mm | 30% | 3.2 m/s | 6.6 |
| 2014 | 30.5°C | 21.6°C | 12.8°C | 34.1°C | 6.4°C | 10 mm | 38% | 3.3 m/s | 6.6 |
| 2013 🔥 | 34.3°C | 25.5°C | 16.7°C | 40.8°C | 12.7°C | 2 mm | 26% | 3.2 m/s | 6.3 |
| 2012 | 31.1°C | 22.6°C | 14.1°C | 38.5°C | 6.9°C | 11 mm | 39% | 3.3 m/s | 6.4 |
| 2011 | 30.2°C | 21.7°C | 13.1°C | 37.7°C | 6.6°C | 2 mm | 36% | 3.5 m/s | 6.6 |
| 2010 🌧️ | 27.9°C | 21.6°C | 15.2°C | 34.0°C | 8.6°C | 98 mm | 64% | 3.2 m/s | 5.1 |
| 2009 | 31.5°C | 23.0°C | 14.5°C | 38.6°C | 9.3°C | 11 mm | 30% | 3 m/s | 6.5 |
| 2008 | 29.7°C | 22.0°C | 14.4°C | 36.3°C | 8.8°C | 52 mm | 55% | 3.1 m/s | 5.8 |
| 2007 | 31.3°C | 22.7°C | 14.1°C | 37.9°C | 10.3°C | 10 mm | 35% | 2.9 m/s | 6.4 |
| 2006 | 30.4°C | 22.7°C | 15.0°C | 35.6°C | 7.4°C | 3 mm | 37% | 3.3 m/s | 6.5 |
| 2005 | 31.7°C | 23.1°C | 14.4°C | 39.5°C | 8.1°C | 12 mm | 40% | 3 m/s | 6.4 |
| 2004 | 30.5°C | 21.9°C | 13.3°C | 37.2°C | 5.9°C | 8 mm | 35% | 3 m/s | 6.5 |
| 2003 | 32.7°C | 23.7°C | 14.7°C | 38.8°C | 5.7°C | 0 mm | 26% | 3.2 m/s | 6.7 |
| 2002 | 32.5°C | 23.5°C | 14.5°C | 38.8°C | 7.9°C | 1 mm | 24% | 3.5 m/s | 6.3 |
| 2001 | 30.9°C | 22.7°C | 14.5°C | 33.9°C | 7.4°C | 1 mm | 32% | 3.4 m/s | 6.3 |
| 2000 | 32.6°C | 23.6°C | 14.7°C | 41.1°C | 9.8°C | 1 mm | 28% | 3.3 m/s | 6.5 |
| 1999 | 31.3°C | 23.2°C | 15.1°C | 35.6°C | 9.0°C | 1 mm | 33% | 3.7 m/s | 6.6 |
| 1998 | 30.5°C | 23.3°C | 16.0°C | 37.2°C | 9.6°C | 15 mm | 57% | 3.6 m/s | 6.1 |
| 1997 | 31.9°C | 23.7°C | 15.4°C | 39.5°C | 7.8°C | 20 mm | 38% | 3.2 m/s | 6.3 |
| 1996 | 31.5°C | 22.1°C | 12.7°C | 37.9°C | 6.4°C | 15 mm | 31% | 3.1 m/s | 6.3 |
| 1995 | 31.5°C | 23.2°C | 14.8°C | 35.5°C | 5.6°C | 15 mm | 36% | 3.6 m/s | 5.7 |
| 1994 | 30.7°C | 21.7°C | 12.6°C | 36.6°C | 8.7°C | 0 mm | 23% | 3.4 m/s | 6.3 |
| 1993 | 29.4°C | 21.6°C | 13.8°C | 38.0°C | 7.3°C | 11 mm | 46% | 3.8 m/s | 6.4 |
| 1992 | 29.6°C | 21.3°C | 12.9°C | 35.0°C | 8.0°C | 24 mm | 37% | 3.1 m/s | 6.2 |
| 1991 | 31.9°C | 22.9°C | 13.9°C | 36.7°C | 8.3°C | 0 mm | 24% | 3.1 m/s | 6.7 |
| 1990 | 27.5°C | 19.5°C | 11.5°C | 32.2°C | 4.7°C | 4 mm | 53% | 3.3 m/s | 6.7 |
| 1989 | 29.6°C | 20.4°C | 11.2°C | 36.8°C | 5.2°C | 0 mm | 40% | 3 m/s | 6.9 |
| 1988 | 31.0°C | 22.4°C | 13.8°C | 41.5°C | 7.4°C | 4 mm | 42% | 3.5 m/s | 6.4 |
| 1987 | 29.7°C | 21.5°C | 13.3°C | 34.1°C | 7.2°C | 5 mm | 36% | 3.3 m/s | 6.1 |
| 1986 | 31.2°C | 22.7°C | 14.3°C | 38.9°C | 4.7°C | 1 mm | 33% | 3.2 m/s | 6.6 |
| 1985 | 29.0°C | 20.4°C | 11.7°C | 37.2°C | 4.5°C | 0 mm | 29% | 3.6 m/s | 6.7 |
| 1984 ❄️ | 27.5°C | 18.9°C | 10.2°C | 34.5°C | 3.9°C | 6 mm | 42% | 2.9 m/s | 6.5 |
| 1983 | 32.2°C | 23.6°C | 15.0°C | 37.8°C | 8.5°C | 2 mm | 43% | 3.3 m/s | — |
| 1982 | 29.8°C | 21.7°C | 13.5°C | 36.9°C | 8.3°C | 0 mm | 31% | 3.3 m/s | — |
| 1981 | 30.1°C | 22.1°C | 14.1°C | 38.5°C | 4.1°C | 0 mm | 45% | 3.3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.9°C with lows near 14.1°C (mean 22.5°C), based on 45 years of NASA POWER data.
September averages 11 mm of rainfall in Longreach, one of the drier months. The wettest on record was 98 mm in 2010.
The hottest September reached 41.5°C in 1988. The coldest dipped to 3.9°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.2°C. Daytime highs moved from 29.7°C to 31.8°C and overnight lows from 12.9°C to 15.1°C over the same span.
September is one of the cooler months of the year in Longreach and one of the drier months, so plan for around 30.9°C daytime highs and 14.1°C at night.
Not quite — September is the 5th coolest month in Longreach, averaging 22.5°C.
For September in Longreach, pack light, breathable clothing and sun protection, with typical highs of 30.9°C and lows of 14.1°C.
Relative humidity in September averages 36% — relatively dry.
Average wind speed in September is 3.3 m/s. The windiest September on record averaged 3.8 m/s (1993).
The wettest September on record was 2010 with 98 mm. On average, September sees 11 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 Longreach 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.
