September is one of the cooler months of the year in Echuca, with average highs near 18.7°C and lows around 5.7°C (mean 12.2°C). It is about average for rainfall, averaging 36 mm of rainfall and 71% relative humidity across the period.
September is one of the cooler months of the year in Echuca. Across 45 years of records, the warmest September in Echuca was 2023 — when the month averaged 15.2°C — while the coldest was 1992 at 9.6°C. Typical September days reach 18.7°C with nights near 5.7°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Echuca, averaging 36 mm of rainfall. The wettest September on record was 1992 with 96 mm, while the driest was 2008 at 5 mm.
Relative humidity in Echuca during September averages 71%. The most humid Septembers were 1983 and 2016 at 81%, and the least humid was 1982 at 56%.
September receives about 4.5 kWh/m²/day of solar energy in Echuca. The sunniest September was 2018 at 5.2 kWh/m²/day, and the cloudiest was 2016 at 3.9.
Average wind speed in Echuca during September is 1.9 m/s. The windiest September was 1996 at 2.3 m/s, while the calmest were 1995 and 1997 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.5°C | 11.6°C | 12.8°C | 12.4°C | 13.2°C | +1.7°C |
| Avg High | 17.8°C | 17.7°C | 19.6°C | 19.0°C | 20.0°C | +2.2°C |
| Avg Low | 5.3°C | 5.4°C | 5.9°C | 5.8°C | 6.4°C | +1.1°C |
| Avg Rain | 36 mm | 49 mm | 29 mm | 33 mm | 32 mm | -4 mm |
September temperatures in Echuca have risen by about 1.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -0.9°C (1982) to a record high of 35°C (2017).
Rainfall in September is about average for rainfall, averaging 36 mm, with a wettest year of 96 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A quieter season to visit Echuca
If your dates are flexible, the more temperate months of December and March tend to be the most comfortable for visiting Echuca. That said, September — with days averaging 18.7°C and nights around 5.7°C (mean 12.2°C) and moderate rainfall (36 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 | 19.9°C | 13.1°C | 6.2°C | 27.4°C | 1.9°C | 22 mm | 68% | 2.1 m/s | 4.5 |
| 2024 | 20.3°C | 13.4°C | 6.4°C | 30.8°C | 0.9°C | 32 mm | 66% | 2.1 m/s | 4.6 |
| 2023 🔥 | 23.1°C | 15.2°C | 7.4°C | 30.1°C | 1.2°C | 14 mm | 61% | 1.7 m/s | 5 |
| 2022 | 17.0°C | 11.5°C | 6.0°C | 21.7°C | 1.4°C | 53 mm | 80% | 1.7 m/s | 4 |
| 2021 | 19.8°C | 12.9°C | 5.9°C | 27.4°C | 1.9°C | 52 mm | 69% | 2 m/s | 4.8 |
| 2020 | 19.6°C | 13.0°C | 6.5°C | 25.4°C | 2.4°C | 17 mm | 70% | 1.9 m/s | 4.5 |
| 2019 | 19.7°C | 12.7°C | 5.7°C | 27.4°C | 1.5°C | 12 mm | 66% | 1.8 m/s | 4.6 |
| 2018 | 20.0°C | 12.4°C | 4.8°C | 27.5°C | 0.8°C | 9 mm | 60% | 1.8 m/s | 5.2 |
| 2017 | 19.8°C | 12.9°C | 6.0°C | 35.0°C | 1.2°C | 6 mm | 63% | 2.2 m/s | 4.6 |
| 2016 | 16.5°C | 11.6°C | 6.6°C | 21.7°C | 3.2°C | 78 mm | 81% | 1.9 m/s | 3.9 |
| 2015 | 19.3°C | 12.2°C | 5.0°C | 27.1°C | 2.1°C | 21 mm | 69% | 1.7 m/s | 5 |
| 2014 | 19.2°C | 12.6°C | 6.0°C | 26.9°C | 2.2°C | 52 mm | 73% | 1.8 m/s | 4.8 |
| 2013 | 20.5°C | 14.0°C | 7.6°C | 28.1°C | 3.0°C | 40 mm | 72% | 1.9 m/s | 4.3 |
| 2012 | 19.2°C | 12.3°C | 5.4°C | 28.1°C | 0.5°C | 22 mm | 68% | 1.8 m/s | 4.5 |
| 2011 | 19.4°C | 12.6°C | 5.9°C | 29.2°C | 2.4°C | 41 mm | 69% | 2 m/s | 4.6 |
| 2010 | 16.2°C | 10.6°C | 5.1°C | 20.4°C | 1.2°C | 50 mm | 81% | 1.8 m/s | 4.2 |
| 2009 | 19.7°C | 12.8°C | 5.8°C | 30.0°C | 2.3°C | 37 mm | 65% | 2.1 m/s | 4.3 |
| 2008 | 20.4°C | 13.1°C | 5.7°C | 31.2°C | 1.6°C | 5 mm | 61% | 1.9 m/s | 5 |
| 2007 | 19.6°C | 12.4°C | 5.2°C | 24.3°C | 2.1°C | 9 mm | 64% | 2 m/s | 4.7 |
| 2006 | 21.1°C | 13.8°C | 6.5°C | 29.5°C | 2.3°C | 23 mm | 61% | 1.9 m/s | 4.9 |
| 2005 | 18.4°C | 12.1°C | 5.8°C | 23.7°C | 1.3°C | 39 mm | 73% | 1.7 m/s | 4.2 |
| 2004 | 18.0°C | 11.9°C | 5.8°C | 26.4°C | 1.7°C | 52 mm | 75% | 1.6 m/s | 4.2 |
| 2003 | 17.0°C | 10.9°C | 4.8°C | 28.0°C | 0.1°C | 23 mm | 76% | 2.1 m/s | 4.6 |
| 2002 | 20.6°C | 13.2°C | 5.7°C | 28.1°C | 0.9°C | 21 mm | 57% | 2.1 m/s | 4.4 |
| 2001 | 21.6°C | 14.5°C | 7.4°C | 31.6°C | 2.0°C | 33 mm | 67% | 1.8 m/s | 4.3 |
| 2000 | 19.1°C | 12.9°C | 6.7°C | 23.9°C | 2.3°C | 47 mm | 74% | 1.9 m/s | 4.3 |
| 1999 | 20.4°C | 13.9°C | 7.5°C | 26.2°C | 2.0°C | 32 mm | 70% | 1.8 m/s | 4.5 |
| 1998 | 19.7°C | 13.2°C | 6.7°C | 27.5°C | 1.9°C | 53 mm | 73% | 1.9 m/s | 4.3 |
| 1997 | 18.1°C | 12.1°C | 6.1°C | 21.7°C | 2.4°C | 60 mm | 75% | 1.5 m/s | 4.6 |
| 1996 | 16.8°C | 10.8°C | 4.7°C | 26.2°C | 0.3°C | 52 mm | 75% | 2.3 m/s | 4.2 |
| 1995 | 17.1°C | 10.9°C | 4.7°C | 22.6°C | -0.7°C | 14 mm | 78% | 1.5 m/s | 4.4 |
| 1994 | 17.9°C | 10.7°C | 3.6°C | 25.3°C | 0.8°C | 17 mm | 66% | 1.9 m/s | 4.5 |
| 1993 | 17.4°C | 11.5°C | 5.6°C | 25.6°C | 1.0°C | 94 mm | 80% | 1.8 m/s | 4.3 |
| 1992 ❄️ 🌧️ | 15.0°C | 9.6°C | 4.2°C | 20.9°C | 0.0°C | 96 mm | 80% | 1.8 m/s | 4.1 |
| 1991 | 17.0°C | 11.2°C | 5.4°C | 24.3°C | 0.9°C | 58 mm | 76% | 2 m/s | 4.6 |
| 1990 | 18.0°C | 11.7°C | 5.3°C | 24.3°C | 2.7°C | 19 mm | 76% | 1.8 m/s | 4.8 |
| 1989 | 17.0°C | 10.8°C | 4.7°C | 24.1°C | 1.6°C | 23 mm | 79% | 1.8 m/s | 4.7 |
| 1988 | 18.9°C | 12.4°C | 5.9°C | 25.5°C | 1.3°C | 54 mm | 74% | 1.8 m/s | 4.5 |
| 1987 | 19.3°C | 12.4°C | 5.5°C | 30.6°C | 0.2°C | 15 mm | 71% | 1.8 m/s | 4.7 |
| 1986 | 16.9°C | 11.5°C | 6.1°C | 21.9°C | 2.5°C | 55 mm | 79% | 1.8 m/s | 4.2 |
| 1985 | 17.0°C | 10.8°C | 4.5°C | 23.2°C | 1.9°C | 35 mm | 75% | 1.7 m/s | 5 |
| 1984 | 16.0°C | 10.3°C | 4.6°C | 22.6°C | 0.6°C | 31 mm | 75% | 1.9 m/s | 4.4 |
| 1983 | 16.9°C | 11.0°C | 5.1°C | 22.7°C | 0.8°C | 62 mm | 81% | 1.8 m/s | — |
| 1982 | 19.5°C | 12.2°C | 4.9°C | 28.3°C | -0.9°C | 17 mm | 56% | 1.9 m/s | — |
| 1981 | 18.4°C | 12.2°C | 6.0°C | 26.7°C | 2.7°C | 28 mm | 79% | 1.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 18.7°C with lows near 5.7°C (mean 12.2°C), based on 45 years of NASA POWER data.
September averages 36 mm of rainfall in Echuca, about average for rainfall. The wettest on record was 96 mm in 1992.
The hottest September reached 35°C in 2017. The coldest dipped to -0.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.9°C. Daytime highs moved from 17.6°C to 20°C and overnight lows from 5°C to 6.4°C over the same span.
September is one of the cooler months of the year in Echuca and about average for rainfall, so plan for around 18.7°C daytime highs and 5.7°C at night.
Not quite — September is the 4th coolest month in Echuca, averaging 12.2°C.
For September in Echuca, pack warm layers and a jacket for chilly mornings, with typical highs of 18.7°C and lows of 5.7°C.
Relative humidity in September averages 71% — moderately humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.3 m/s (1996).
The wettest September on record was 1992 with 96 mm. On average, September sees 36 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 Echuca 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.
