September is one of the cooler months of the year in Ararat, with average highs near 14.9°C and lows around 4.6°C (mean 9.8°C). It is a relatively wet time of year, averaging 61 mm of rainfall and 81% relative humidity across the period.
September is one of the cooler months of the year in Ararat. Across 45 years of records, the warmest September in Ararat was 2023 — when the month averaged 12°C — while the coldest was 1992 at 7.8°C. Typical September days reach 14.9°C with nights near 4.6°C. The long-term trend is warming, about 0.3°C per decade.
September is a relatively wet time of year in Ararat, averaging 61 mm of rainfall. The wettest September on record was 2016 with 131 mm, while the driest was 2023 at 17 mm.
Relative humidity in Ararat during September averages 81%. The most humid September was 1992 at 88%, and the least humid was 2006 at 72%.
September receives about 4 kWh/m²/day of solar energy in Ararat. The sunniest September was 2023 at 4.7 kWh/m²/day, and the cloudiest was 2022 at 3.4.
Average wind speed in Ararat during September is 2.9 m/s. The windiest September was 1996 at 3.7 m/s, while the calmest was 1997 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.5°C | 9.4°C | 10.0°C | 9.8°C | 10.5°C | +1°C |
| Avg High | 14.7°C | 14.3°C | 15.3°C | 14.9°C | 15.7°C | +1°C |
| Avg Low | 4.3°C | 4.4°C | 4.7°C | 4.7°C | 5.3°C | +1°C |
| Avg Rain | 60 mm | 73 mm | 61 mm | 58 mm | 51 mm | -9 mm |
September temperatures in Ararat have risen by about 1.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -1.4°C (2003) to a record high of 26.4°C (1987).
Rainfall in September is a relatively wet time of year, averaging 61 mm, with a wettest year of 131 mm.
A quieter season to visit Ararat
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Ararat. That said, September — with days averaging 14.9°C and nights around 4.6°C (mean 9.8°C) and moderate rainfall (61 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 | 15.4°C | 10.3°C | 5.2°C | 20.9°C | 0.3°C | 32 mm | 79% | 3.2 m/s | 4 |
| 2024 | 15.9°C | 10.7°C | 5.4°C | 21.2°C | 1.5°C | 43 mm | 76% | 3.3 m/s | 3.8 |
| 2023 🔥 | 18.3°C | 12.0°C | 5.7°C | 26.2°C | 1.1°C | 17 mm | 73% | 2.6 m/s | 4.7 |
| 2022 | 14.3°C | 9.7°C | 5.1°C | 18.6°C | 1.3°C | 73 mm | 85% | 2.7 m/s | 3.4 |
| 2021 | 14.9°C | 9.9°C | 4.9°C | 21.6°C | 1.0°C | 65 mm | 82% | 2.9 m/s | 4.1 |
| 2020 | 15.3°C | 10.3°C | 5.3°C | 21.5°C | -0.2°C | 73 mm | 80% | 3.2 m/s | 4.1 |
| 2019 | 14.9°C | 9.5°C | 4.1°C | 21.7°C | -0.9°C | 46 mm | 80% | 2.6 m/s | 4.2 |
| 2018 | 14.8°C | 9.0°C | 3.1°C | 20.8°C | -0.3°C | 18 mm | 78% | 2.7 m/s | 4.5 |
| 2017 | 14.3°C | 9.5°C | 4.8°C | 22.2°C | -0.2°C | 53 mm | 80% | 3.5 m/s | 4 |
| 2016 🌧️ | 14.1°C | 9.7°C | 5.3°C | 19.8°C | 3.2°C | 131 mm | 85% | 2.7 m/s | 3.7 |
| 2015 | 15.9°C | 10.2°C | 4.4°C | 24.8°C | 0.6°C | 42 mm | 78% | 2.4 m/s | 4 |
| 2014 | 16.0°C | 10.4°C | 4.9°C | 24.4°C | 1.6°C | 35 mm | 81% | 2.6 m/s | 4.3 |
| 2013 | 15.9°C | 11.2°C | 6.4°C | 21.8°C | 0.0°C | 71 mm | 84% | 3 m/s | 3.7 |
| 2012 | 15.0°C | 10.1°C | 5.1°C | 21.7°C | 1.4°C | 55 mm | 81% | 2.9 m/s | 4.1 |
| 2011 | 15.4°C | 10.1°C | 4.9°C | 24.0°C | 1.8°C | 47 mm | 80% | 2.9 m/s | 4.1 |
| 2010 | 12.9°C | 8.7°C | 4.4°C | 16.2°C | 0.8°C | 81 mm | 87% | 2.6 m/s | 3.6 |
| 2009 | 15.0°C | 9.9°C | 4.8°C | 22.2°C | 1.0°C | 96 mm | 81% | 3.2 m/s | 3.8 |
| 2008 | 15.2°C | 9.6°C | 4.0°C | 23.8°C | 0.2°C | 40 mm | 78% | 2.9 m/s | 4.3 |
| 2007 | 15.4°C | 9.9°C | 4.4°C | 20.7°C | 0.5°C | 49 mm | 77% | 3.2 m/s | 4.2 |
| 2006 | 16.9°C | 10.7°C | 4.5°C | 25.7°C | 0.5°C | 43 mm | 72% | 3 m/s | 4.3 |
| 2005 | 15.5°C | 10.4°C | 5.4°C | 22.5°C | -0.5°C | 53 mm | 79% | 2.7 m/s | 3.9 |
| 2004 | 14.5°C | 9.8°C | 5.1°C | 22.7°C | 1.3°C | 62 mm | 85% | 2.4 m/s | 3.7 |
| 2003 | 13.7°C | 8.5°C | 3.4°C | 20.8°C | -1.4°C | 52 mm | 83% | 3.5 m/s | 4.1 |
| 2002 | 15.7°C | 9.9°C | 4.2°C | 23.9°C | 0.6°C | 53 mm | 74% | 3.5 m/s | 4 |
| 2001 | 16.3°C | 11.0°C | 5.7°C | 25.6°C | 0.8°C | 68 mm | 81% | 2.7 m/s | 3.9 |
| 2000 | 14.7°C | 9.9°C | 5.2°C | 20.4°C | 1.8°C | 96 mm | 85% | 3.3 m/s | 3.7 |
| 1999 | 16.7°C | 11.2°C | 5.7°C | 23.7°C | 1.9°C | 36 mm | 79% | 2.8 m/s | 4.3 |
| 1998 | 15.9°C | 10.7°C | 5.4°C | 21.9°C | 0.4°C | 68 mm | 82% | 3 m/s | 4 |
| 1997 | 15.1°C | 9.8°C | 4.6°C | 17.6°C | 1.1°C | 87 mm | 83% | 2.2 m/s | 4.2 |
| 1996 | 13.2°C | 8.6°C | 4.1°C | 20.7°C | -1.1°C | 114 mm | 84% | 3.7 m/s | 3.9 |
| 1995 | 13.9°C | 8.9°C | 3.9°C | 18.9°C | -1.2°C | 35 mm | 85% | 2.6 m/s | 4 |
| 1994 | 13.2°C | 8.1°C | 3.0°C | 18.8°C | -1.3°C | 46 mm | 79% | 2.9 m/s | 3.9 |
| 1993 | 14.8°C | 9.8°C | 4.8°C | 22.9°C | 0.1°C | 98 mm | 85% | 2.8 m/s | 4.1 |
| 1992 ❄️ | 11.9°C | 7.8°C | 3.7°C | 14.8°C | -0.2°C | 107 mm | 88% | 2.5 m/s | 3.7 |
| 1991 | 13.7°C | 9.0°C | 4.3°C | 18.7°C | -0.1°C | 89 mm | 85% | 2.9 m/s | 4.1 |
| 1990 | 14.8°C | 9.6°C | 4.4°C | 21.2°C | 0.3°C | 49 mm | 82% | 2.9 m/s | 4.4 |
| 1989 | 14.5°C | 9.3°C | 4.1°C | 20.4°C | 1.9°C | 58 mm | 84% | 2.8 m/s | 4.4 |
| 1988 | 15.4°C | 10.2°C | 5.1°C | 19.9°C | 0.7°C | 75 mm | 82% | 3 m/s | 3.9 |
| 1987 | 15.7°C | 10.2°C | 4.8°C | 26.4°C | 0.0°C | 34 mm | 81% | 2.6 m/s | 4 |
| 1986 | 14.0°C | 9.2°C | 4.5°C | 19.7°C | 0.7°C | 65 mm | 86% | 2.9 m/s | 3.8 |
| 1985 | 14.3°C | 9.1°C | 3.9°C | 21.0°C | 0.9°C | 36 mm | 82% | 2.5 m/s | 4.5 |
| 1984 | 12.7°C | 8.1°C | 3.5°C | 18.7°C | -0.2°C | 98 mm | 84% | 2.8 m/s | 3.9 |
| 1983 | 13.7°C | 9.0°C | 4.3°C | 20.8°C | -0.3°C | 101 mm | 86% | 3.2 m/s | — |
| 1982 | 16.1°C | 9.6°C | 3.2°C | 25.0°C | -0.1°C | 39 mm | 72% | 2.8 m/s | — |
| 1981 | 15.6°C | 10.5°C | 5.3°C | 24.0°C | 2.3°C | 33 mm | 84% | 2.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 14.9°C with lows near 4.6°C (mean 9.8°C), based on 45 years of NASA POWER data.
September averages 61 mm of rainfall in Ararat, a relatively wet time of year. The wettest on record was 131 mm in 2016.
The hottest September reached 26.4°C in 1987. The coldest dipped to -1.4°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.2°C. Daytime highs moved from 14.5°C to 15.8°C and overnight lows from 4°C to 5.3°C over the same span.
September is one of the cooler months of the year in Ararat and a relatively wet time of year, so plan for around 14.9°C daytime highs and 4.6°C at night.
Not quite — September is the 4th coolest month in Ararat, averaging 9.8°C.
For September in Ararat, pack warm layers and a jacket for chilly mornings, with typical highs of 14.9°C and lows of 4.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 2.9 m/s. The windiest September on record averaged 3.7 m/s (1996).
The wettest September on record was 2016 with 131 mm. On average, September sees 61 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 Ararat 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.
