September is one of the cooler months of the year in Narrogin, with average highs near 17.3°C and lows around 6.2°C (mean 11.8°C). It is a relatively wet time of year, averaging 57 mm of rainfall and 81% relative humidity across the period.
September is one of the cooler months of the year in Narrogin. Across 45 years of records, the warmest Septembers in Narrogin were 2019 and 2023 — when the month averaged 13.8°C — while the coldest was 1992 at 9.7°C. Typical September days reach 17.3°C with nights near 6.2°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Narrogin, averaging 57 mm of rainfall. The wettest September on record was 2013 with 130 mm, while the driest were 2010 and 2019 at 17 mm.
Relative humidity in Narrogin during September averages 81%. The most humid September was 1992 at 86%, and the least humid was 2015 at 71%.
September receives about 5 kWh/m²/day of solar energy in Narrogin. The sunniest Septembers were 2010, 2015 and 2019, among others at 5.5 kWh/m²/day, and the cloudiest was 1992 at 4.4.
Average wind speed in Narrogin during September is 3 m/s. The windiest September was 2013 at 3.8 m/s, while the calmest were 1995 and 2004 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.0°C | 11.4°C | 11.3°C | 12.1°C | 12.3°C | +0.3°C |
| Avg High | 17.6°C | 16.7°C | 16.6°C | 18.0°C | 17.8°C | +0.2°C |
| Avg Low | 6.3°C | 6.0°C | 6.0°C | 6.2°C | 6.7°C | +0.4°C |
| Avg Rain | 53 mm | 63 mm | 57 mm | 52 mm | 59 mm | +5 mm |
September temperatures in Narrogin have risen by about 0.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -0.4°C (2004) to a record high of 28.8°C (2006).
Rainfall in September is a relatively wet time of year, averaging 57 mm, with a wettest year of 130 mm.
A quieter season to visit Narrogin
If your dates are flexible, the more temperate months of December and March tend to be the most comfortable for visiting Narrogin. That said, September — with days averaging 17.3°C and nights around 6.2°C (mean 11.8°C) and moderate rainfall (57 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 17.5°C | 11.9°C | 6.2°C | 24.6°C | 2.1°C | 69 mm | 83% | 2.7 m/s | 5.3 |
| 2024 | 18.5°C | 12.7°C | 6.8°C | 24.6°C | 3.5°C | 22 mm | 80% | 2.7 m/s | 5.4 |
| 2023 | 19.3°C | 13.8°C | 8.4°C | 28.5°C | 1.4°C | 70 mm | 82% | 2.9 m/s | 5 |
| 2022 | 16.9°C | 11.6°C | 6.3°C | 22.9°C | 3.1°C | 40 mm | 83% | 2.6 m/s | 4.9 |
| 2021 | 17.2°C | 11.4°C | 5.5°C | 24.2°C | 1.6°C | 75 mm | 82% | 2.7 m/s | 5.1 |
| 2020 | 17.5°C | 12.4°C | 7.2°C | 24.3°C | 4.0°C | 76 mm | 83% | 3.2 m/s | 5.2 |
| 2019 🔥 | 20.4°C | 13.8°C | 7.2°C | 27.1°C | 0.3°C | 17 mm | 76% | 2.7 m/s | 5.5 |
| 2018 | 17.5°C | 11.7°C | 5.8°C | 25.4°C | 0.8°C | 19 mm | 80% | 2.8 m/s | 5.1 |
| 2017 | 17.7°C | 12.2°C | 6.7°C | 23.8°C | 1.5°C | 50 mm | 79% | 2.7 m/s | 4.8 |
| 2016 | 15.6°C | 9.8°C | 3.9°C | 19.6°C | -0.2°C | 43 mm | 81% | 2.9 m/s | 5 |
| 2015 | 19.8°C | 12.7°C | 5.6°C | 27.7°C | 1.6°C | 18 mm | 71% | 2.9 m/s | 5.5 |
| 2014 | 18.8°C | 13.2°C | 7.6°C | 26.3°C | 4.4°C | 67 mm | 83% | 2.9 m/s | 5 |
| 2013 🌧️ | 16.6°C | 12.2°C | 7.7°C | 20.0°C | 3.8°C | 130 mm | 85% | 3.8 m/s | 4.7 |
| 2012 | 18.0°C | 12.0°C | 6.0°C | 24.0°C | 0.5°C | 83 mm | 78% | 3.3 m/s | 5.2 |
| 2011 | 16.9°C | 11.5°C | 6.2°C | 21.1°C | 3.8°C | 71 mm | 82% | 2.9 m/s | 4.9 |
| 2010 | 19.0°C | 12.2°C | 5.4°C | 25.8°C | 2.4°C | 17 mm | 71% | 2.7 m/s | 5.5 |
| 2009 | 14.8°C | 10.0°C | 5.3°C | 20.4°C | 2.6°C | 97 mm | 84% | 3.7 m/s | 4.7 |
| 2008 | 17.0°C | 11.7°C | 6.4°C | 22.3°C | -0.2°C | 55 mm | 81% | 3.1 m/s | 4.8 |
| 2007 | 16.7°C | 11.5°C | 6.4°C | 21.1°C | 2.9°C | 69 mm | 86% | 3.2 m/s | 4.9 |
| 2006 | 18.0°C | 12.2°C | 6.5°C | 28.8°C | 1.0°C | 31 mm | 79% | 3.2 m/s | 5 |
| 2005 | 15.7°C | 10.5°C | 5.3°C | 20.8°C | 0.4°C | 78 mm | 84% | 3.4 m/s | 4.9 |
| 2004 | 16.8°C | 10.9°C | 4.9°C | 19.8°C | -0.4°C | 22 mm | 80% | 2.5 m/s | 4.9 |
| 2003 | 16.3°C | 11.3°C | 6.2°C | 23.5°C | 3.7°C | 77 mm | 84% | 3.4 m/s | 5 |
| 2002 | 16.6°C | 11.1°C | 5.7°C | 22.3°C | 1.0°C | 43 mm | 82% | 3.1 m/s | 5.2 |
| 2001 | 16.8°C | 11.5°C | 6.2°C | 26.5°C | 1.4°C | 57 mm | 83% | 3 m/s | 4.6 |
| 2000 | 17.7°C | 12.4°C | 7.0°C | 22.3°C | 2.9°C | 36 mm | 84% | 2.8 m/s | 5.1 |
| 1999 | 16.8°C | 11.3°C | 5.7°C | 21.4°C | 0.5°C | 81 mm | 84% | 3 m/s | 4.9 |
| 1998 | 16.1°C | 10.9°C | 5.7°C | 20.3°C | 1.7°C | 78 mm | 83% | 3.2 m/s | 4.9 |
| 1997 | 17.1°C | 11.8°C | 6.4°C | 22.9°C | 2.4°C | 45 mm | 84% | 2.6 m/s | 4.6 |
| 1996 | 16.2°C | 11.3°C | 6.4°C | 19.5°C | 2.4°C | 98 mm | 85% | 3.6 m/s | 4.9 |
| 1995 | 17.2°C | 11.9°C | 6.6°C | 21.9°C | 3.5°C | 57 mm | 84% | 2.5 m/s | 4.8 |
| 1994 | 18.2°C | 11.9°C | 5.6°C | 24.4°C | 0.5°C | 39 mm | 80% | 2.9 m/s | 5.5 |
| 1993 | 16.6°C | 11.2°C | 5.7°C | 22.5°C | 1.1°C | 68 mm | 81% | 2.8 m/s | 5 |
| 1992 ❄️ | 14.2°C | 9.7°C | 5.3°C | 21.3°C | 2.8°C | 53 mm | 86% | 3.1 m/s | 4.4 |
| 1991 | 16.7°C | 11.6°C | 6.4°C | 23.8°C | 0.5°C | 65 mm | 85% | 2.8 m/s | 5.1 |
| 1990 | 18.0°C | 11.9°C | 5.7°C | 25.3°C | 0.9°C | 47 mm | 79% | 2.6 m/s | 5.1 |
| 1989 | 17.1°C | 11.7°C | 6.3°C | 21.3°C | 0.7°C | 44 mm | 83% | 3.2 m/s | 5.1 |
| 1988 | 17.1°C | 12.0°C | 7.0°C | 23.5°C | 4.2°C | 75 mm | 84% | 3.3 m/s | 4.8 |
| 1987 | 19.0°C | 12.7°C | 6.4°C | 25.0°C | 2.2°C | 37 mm | 78% | 2.6 m/s | 5.2 |
| 1986 | 17.5°C | 11.9°C | 6.4°C | 24.7°C | 1.6°C | 32 mm | 82% | 2.8 m/s | 4.9 |
| 1985 | 18.1°C | 12.0°C | 6.0°C | 23.5°C | 1.1°C | 30 mm | 79% | 2.7 m/s | 5 |
| 1984 | 16.1°C | 10.9°C | 5.6°C | 19.5°C | 1.9°C | 72 mm | 81% | 3 m/s | 5.4 |
| 1983 | 17.9°C | 12.7°C | 7.5°C | 25.1°C | 3.9°C | 86 mm | 85% | 3.1 m/s | — |
| 1982 | 17.9°C | 11.7°C | 5.5°C | 26.1°C | 1.1°C | 62 mm | 78% | 2.6 m/s | — |
| 1981 | 17.6°C | 12.0°C | 6.3°C | 24.2°C | 0.6°C | 44 mm | 81% | 3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 17.3°C with lows near 6.2°C (mean 11.8°C), based on 45 years of NASA POWER data.
September averages 57 mm of rainfall in Narrogin, a relatively wet time of year. The wettest on record was 130 mm in 2013.
The hottest September reached 28.8°C in 2006. The coldest dipped to -0.4°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.4°C. Daytime highs moved from 17.5°C to 17.9°C and overnight lows from 6.2°C to 6.6°C over the same span.
September is one of the cooler months of the year in Narrogin and a relatively wet time of year, so plan for around 17.3°C daytime highs and 6.2°C at night.
Not quite — September is the 4th coolest month in Narrogin, averaging 11.8°C.
For September in Narrogin, pack warm layers and a jacket for chilly mornings, with typical highs of 17.3°C and lows of 6.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 3 m/s. The windiest September on record averaged 3.8 m/s (2013).
The wettest September on record was 2013 with 130 mm. On average, September sees 57 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 Narrogin 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.
