September is one of the cooler months of the year in Three Springs, with average highs near 22.2°C and lows around 8.4°C (mean 15.3°C). It is about average for rainfall, averaging 31 mm of rainfall and 68% relative humidity across the period.
September is one of the cooler months of the year in Three Springs. Across 45 years of records, the warmest September in Three Springs was 2023 — when the month averaged 18.6°C — while the coldest was 1992 at 12.9°C. Typical September days reach 22.2°C with nights near 8.4°C. The long-term trend is warming, about 0.3°C per decade.
September is about average for rainfall in Three Springs, averaging 31 mm of rainfall. The wettest September on record was 1992 with 62 mm, while the driest was 2018 at 6 mm.
Relative humidity in Three Springs during September averages 68%. The most humid September was 1992 at 79%, and the least humid was 1987 at 55%.
September receives about 5.5 kWh/m²/day of solar energy in Three Springs. The sunniest September was 2019 at 6.2 kWh/m²/day, and the cloudiest was 2014 at 5.
Average wind speed in Three Springs during September is 3 m/s. The windiest Septembers were 2006 and 2012 at 3.4 m/s, while the calmest was 1986 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.4°C | 14.5°C | 14.9°C | 15.8°C | 16.5°C | +1.1°C |
| Avg High | 22.3°C | 21.1°C | 21.6°C | 22.9°C | 23.7°C | +1.4°C |
| Avg Low | 8.5°C | 8.0°C | 8.1°C | 8.7°C | 9.3°C | +0.8°C |
| Avg Rain | 30 mm | 40 mm | 37 mm | 27 mm | 18 mm | -12 mm |
September temperatures in Three Springs have risen by about 1.1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 2°C (1998) to a record high of 37.3°C (2023).
Rainfall in September is about average for rainfall, averaging 31 mm, with a wettest year of 62 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.2°C per decade, widening the gap between day and night.
A quieter season to visit Three Springs
If your dates are flexible, the more temperate months of April and November tend to be the most comfortable for visiting Three Springs. That said, September — with days averaging 22.2°C and nights around 8.4°C (mean 15.3°C) and moderate rainfall (31 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 | 22.2°C | 15.3°C | 8.4°C | 30.9°C | 3.8°C | 28 mm | 67% | 3 m/s | 5.9 |
| 2024 | 24.9°C | 17.4°C | 9.9°C | 30.6°C | 6.6°C | 8 mm | 58% | 3.2 m/s | 6 |
| 2023 🔥 | 26.1°C | 18.6°C | 11.2°C | 37.3°C | 5.8°C | 16 mm | 63% | 3.1 m/s | 5.5 |
| 2022 | 21.5°C | 15.0°C | 8.5°C | 29.3°C | 5.0°C | 39 mm | 70% | 2.9 m/s | 5.2 |
| 2021 | 23.5°C | 16.0°C | 8.4°C | 31.3°C | 3.1°C | 8 mm | 59% | 3.1 m/s | 5.9 |
| 2020 | 24.2°C | 16.9°C | 9.6°C | 33.0°C | 5.5°C | 6 mm | 61% | 3.1 m/s | 5.7 |
| 2019 | 26.0°C | 17.8°C | 9.5°C | 32.9°C | 4.4°C | 7 mm | 59% | 2.8 m/s | 6.2 |
| 2018 | 22.7°C | 15.3°C | 7.9°C | 30.6°C | 3.8°C | 6 mm | 67% | 2.8 m/s | 5.9 |
| 2017 | 22.2°C | 15.7°C | 9.2°C | 31.2°C | 3.5°C | 37 mm | 67% | 3 m/s | 5.3 |
| 2016 | 20.2°C | 13.2°C | 6.3°C | 26.4°C | 3.3°C | 13 mm | 67% | 2.9 m/s | 5.8 |
| 2015 | 25.0°C | 16.8°C | 8.6°C | 33.1°C | 2.7°C | 11 mm | 56% | 2.9 m/s | 6.1 |
| 2014 | 24.5°C | 17.6°C | 10.6°C | 31.9°C | 5.8°C | 57 mm | 67% | 3 m/s | 5 |
| 2013 | 20.9°C | 15.2°C | 9.5°C | 25.3°C | 5.0°C | 50 mm | 75% | 3.3 m/s | 5.2 |
| 2012 | 23.1°C | 16.2°C | 9.3°C | 31.4°C | 4.6°C | 39 mm | 62% | 3.4 m/s | 5.5 |
| 2011 | 21.3°C | 14.7°C | 8.0°C | 28.2°C | 4.7°C | 41 mm | 69% | 2.9 m/s | 5.6 |
| 2010 | 23.4°C | 15.8°C | 8.2°C | 33.6°C | 3.3°C | 8 mm | 56% | 2.9 m/s | 5.9 |
| 2009 | 19.4°C | 13.2°C | 7.1°C | 27.7°C | 3.6°C | 46 mm | 74% | 2.9 m/s | 5.5 |
| 2008 | 21.7°C | 15.1°C | 8.4°C | 28.0°C | 3.5°C | 42 mm | 69% | 3.1 m/s | 5.3 |
| 2007 | 22.5°C | 15.5°C | 8.5°C | 30.7°C | 5.4°C | 26 mm | 69% | 2.9 m/s | 5.6 |
| 2006 | 23.4°C | 16.4°C | 9.5°C | 33.5°C | 4.3°C | 31 mm | 65% | 3.4 m/s | 5.5 |
| 2005 | 20.4°C | 14.0°C | 7.7°C | 27.7°C | 2.6°C | 40 mm | 72% | 3.3 m/s | 5.5 |
| 2004 | 21.8°C | 14.5°C | 7.3°C | 25.8°C | 2.1°C | 38 mm | 66% | 2.9 m/s | 5.4 |
| 2003 | 19.9°C | 14.1°C | 8.2°C | 30.0°C | 5.9°C | 50 mm | 75% | 3.1 m/s | 5.2 |
| 2002 | 22.3°C | 15.1°C | 7.9°C | 32.7°C | 2.6°C | 24 mm | 63% | 3.1 m/s | 5.4 |
| 2001 | 21.5°C | 14.7°C | 7.9°C | 30.9°C | 3.3°C | 50 mm | 72% | 2.8 m/s | 5.1 |
| 2000 | 23.2°C | 16.0°C | 8.8°C | 30.1°C | 5.9°C | 19 mm | 70% | 2.7 m/s | 5.5 |
| 1999 | 20.3°C | 14.0°C | 7.8°C | 28.8°C | 4.1°C | 53 mm | 76% | 3.1 m/s | 5.2 |
| 1998 | 20.2°C | 13.8°C | 7.4°C | 25.6°C | 2.0°C | 36 mm | 70% | 3.2 m/s | 5.3 |
| 1997 | 21.2°C | 14.6°C | 8.1°C | 26.7°C | 4.8°C | 50 mm | 76% | 2.6 m/s | 5.4 |
| 1996 | 19.9°C | 14.2°C | 8.6°C | 23.5°C | 4.4°C | 47 mm | 78% | 3.2 m/s | 5.1 |
| 1995 | 22.0°C | 15.3°C | 8.7°C | 29.9°C | 3.7°C | 35 mm | 73% | 2.8 m/s | 5.5 |
| 1994 | 24.5°C | 16.9°C | 9.2°C | 33.6°C | 3.7°C | 19 mm | 61% | 3.2 m/s | 5.9 |
| 1993 | 20.4°C | 13.7°C | 7.0°C | 27.6°C | 3.6°C | 32 mm | 71% | 2.8 m/s | 5.5 |
| 1992 ❄️ 🌧️ | 18.4°C | 12.9°C | 7.4°C | 26.4°C | 3.0°C | 62 mm | 79% | 2.9 m/s | 5.1 |
| 1991 | 21.4°C | 14.6°C | 7.8°C | 29.9°C | 3.7°C | 32 mm | 73% | 2.7 m/s | 5.5 |
| 1990 | 23.0°C | 15.3°C | 7.7°C | 31.9°C | 2.9°C | 31 mm | 63% | 2.8 m/s | 5.6 |
| 1989 | 22.6°C | 15.6°C | 8.7°C | 28.8°C | 5.0°C | 19 mm | 67% | 2.8 m/s | 5.6 |
| 1988 | 21.2°C | 14.8°C | 8.5°C | 29.8°C | 4.1°C | 26 mm | 74% | 2.8 m/s | 5.3 |
| 1987 | 24.6°C | 16.7°C | 8.7°C | 34.3°C | 3.6°C | 18 mm | 55% | 3 m/s | 5.9 |
| 1986 | 20.7°C | 14.2°C | 7.7°C | 27.0°C | 3.8°C | 18 mm | 76% | 2.5 m/s | 5.4 |
| 1985 | 23.3°C | 15.9°C | 8.6°C | 31.4°C | 4.4°C | 34 mm | 64% | 3.1 m/s | 5.6 |
| 1984 | 21.2°C | 14.2°C | 7.1°C | 26.3°C | 3.7°C | 41 mm | 65% | 2.9 m/s | 5.9 |
| 1983 | 22.5°C | 16.0°C | 9.4°C | 31.4°C | 6.1°C | 43 mm | 74% | 3.1 m/s | — |
| 1982 | 22.4°C | 15.3°C | 8.2°C | 31.5°C | 3.9°C | 55 mm | 65% | 3.2 m/s | — |
| 1981 | 22.3°C | 15.7°C | 9.2°C | 29.7°C | 3.9°C | 15 mm | 72% | 2.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 22.2°C with lows near 8.4°C (mean 15.3°C), based on 45 years of NASA POWER data.
September averages 31 mm of rainfall in Three Springs, about average for rainfall. The wettest on record was 62 mm in 1992.
The hottest September reached 37.3°C in 2023. The coldest dipped to 2°C in 1998.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.1°C. Daytime highs moved from 22.3°C to 23.6°C and overnight lows from 8.5°C to 9.3°C over the same span.
September is one of the cooler months of the year in Three Springs and about average for rainfall, so plan for around 22.2°C daytime highs and 8.4°C at night.
Not quite — September is the 4th coolest month in Three Springs, averaging 15.3°C.
For September in Three Springs, pack light layers you can adjust through the day, with typical highs of 22.2°C and lows of 8.4°C.
Relative humidity in September averages 68% — moderately humid.
Average wind speed in September is 3 m/s. The windiest September on record averaged 3.4 m/s (2006).
The wettest September on record was 1992 with 62 mm. On average, September sees 31 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 Three Springs 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.
