September is one of the cooler months of the year in Gold Coast, with average highs near 24°C and lows around 13.3°C (mean 18.7°C). It is one of the drier months, averaging 39 mm of rainfall and 68% relative humidity across the period.
September is one of the cooler months of the year in Gold Coast. Across 45 years of records, the warmest September in Gold Coast was 2017 — when the month averaged 20.8°C — while the coldest was 1990 at 16.4°C. Typical September days reach 24°C with nights near 13.3°C. The long-term trend is warming, about 0.5°C per decade.
September is one of the drier months in Gold Coast, averaging 39 mm of rainfall. The wettest September on record was 1998 with 132 mm, while the driest was 1991 at 2 mm.
Relative humidity in Gold Coast during September averages 68%. The most humid September was 1983 at 79%, and the least humid was 1991 at 52%.
September receives about 5.2 kWh/m²/day of solar energy in Gold Coast. The sunniest Septembers were 2003 and 2017 at 5.9 kWh/m²/day, and the cloudiest was 2010 at 4.
Average wind speed in Gold Coast during September is 3.1 m/s. The windiest Septembers were 2008, 2021 and 2024 at 3.4 m/s, while the calmest was 1987 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.7°C | 18.0°C | 19.2°C | 19.0°C | 19.5°C | +1.8°C |
| Avg High | 23.1°C | 23.4°C | 24.7°C | 24.5°C | 24.7°C | +1.6°C |
| Avg Low | 12.4°C | 12.7°C | 13.7°C | 13.6°C | 14.2°C | +1.8°C |
| Avg Rain | 47 mm | 46 mm | 36 mm | 32 mm | 30 mm | -17 mm |
September temperatures in Gold Coast have risen by about 1.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 4.1°C (1987) to a record high of 36.6°C (2017).
Rainfall in September is one of the drier months, averaging 39 mm, with a wettest year of 132 mm.
One of the best times to visit Gold Coast
September is one of the best times to visit Gold Coast. Expect days averaging 24°C and nights around 13.3°C (mean 18.7°C) — cooler than Gold Coast's yearly average — with moderate rainfall (39 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 | 24.8°C | 19.5°C | 14.2°C | 30.4°C | 10.3°C | 5 mm | 70% | 2.7 m/s | 5.4 |
| 2024 | 25.7°C | 20.2°C | 14.6°C | 33.0°C | 10.6°C | 55 mm | 67% | 3.4 m/s | 5.1 |
| 2023 | 26.0°C | 20.4°C | 14.8°C | 34.9°C | 11.8°C | 17 mm | 62% | 3.2 m/s | 5.3 |
| 2022 | 22.9°C | 18.2°C | 13.5°C | 27.5°C | 9.6°C | 65 mm | 72% | 3.1 m/s | 4.4 |
| 2021 | 24.3°C | 18.8°C | 13.2°C | 29.7°C | 8.9°C | 18 mm | 64% | 3.4 m/s | 5.3 |
| 2020 | 24.3°C | 19.6°C | 14.8°C | 29.5°C | 8.8°C | 16 mm | 67% | 3.2 m/s | 5 |
| 2019 | 26.6°C | 20.3°C | 14.1°C | 31.8°C | 9.4°C | 8 mm | 58% | 3.1 m/s | 5.6 |
| 2018 | 23.7°C | 18.9°C | 14.0°C | 29.1°C | 11.3°C | 45 mm | 67% | 3.3 m/s | 4.8 |
| 2017 🔥 | 27.5°C | 20.8°C | 14.1°C | 36.6°C | 8.2°C | 4 mm | 56% | 3.2 m/s | 5.9 |
| 2016 | 23.9°C | 18.8°C | 13.8°C | 26.5°C | 9.6°C | 36 mm | 70% | 3.2 m/s | 4.8 |
| 2015 | 23.4°C | 17.9°C | 12.5°C | 28.5°C | 8.6°C | 43 mm | 68% | 3.2 m/s | 5 |
| 2014 | 23.0°C | 17.9°C | 12.8°C | 27.6°C | 6.9°C | 35 mm | 69% | 2.9 m/s | 5.3 |
| 2013 | 26.1°C | 20.3°C | 14.5°C | 31.8°C | 11.4°C | 34 mm | 67% | 3 m/s | 5.5 |
| 2012 | 24.2°C | 18.6°C | 12.9°C | 29.4°C | 7.0°C | 14 mm | 68% | 2.7 m/s | 5.6 |
| 2011 | 23.4°C | 17.7°C | 12.0°C | 30.4°C | 6.6°C | 18 mm | 67% | 2.9 m/s | 5.4 |
| 2010 | 23.4°C | 19.1°C | 14.9°C | 26.5°C | 10.7°C | 86 mm | 74% | 2.8 m/s | 4 |
| 2009 | 25.0°C | 19.2°C | 13.5°C | 30.0°C | 8.8°C | 43 mm | 66% | 2.7 m/s | 5.8 |
| 2008 | 23.5°C | 18.9°C | 14.3°C | 31.5°C | 9.5°C | 66 mm | 75% | 3.4 m/s | 5 |
| 2007 | 24.1°C | 18.7°C | 13.3°C | 30.6°C | 9.1°C | 55 mm | 72% | 3 m/s | 5.4 |
| 2006 | 22.5°C | 18.2°C | 13.9°C | 27.6°C | 8.8°C | 79 mm | 76% | 3.2 m/s | 5.3 |
| 2005 | 24.0°C | 18.8°C | 13.5°C | 29.8°C | 7.7°C | 34 mm | 70% | 3.2 m/s | 5.1 |
| 2004 | 24.7°C | 19.2°C | 13.7°C | 31.0°C | 9.8°C | 26 mm | 64% | 3.2 m/s | 5.3 |
| 2003 | 27.2°C | 20.4°C | 13.7°C | 33.7°C | 10.0°C | 10 mm | 57% | 3.2 m/s | 5.9 |
| 2002 | 25.6°C | 19.8°C | 13.9°C | 31.0°C | 9.3°C | 22 mm | 65% | 3.3 m/s | 5.4 |
| 2001 | 23.8°C | 18.7°C | 13.6°C | 26.5°C | 9.1°C | 24 mm | 67% | 3 m/s | 4.9 |
| 2000 | 27.0°C | 20.5°C | 13.9°C | 34.1°C | 8.5°C | 4 mm | 61% | 3.3 m/s | 5.6 |
| 1999 | 21.5°C | 17.5°C | 13.5°C | 25.1°C | 8.9°C | 55 mm | 78% | 2.7 m/s | 5 |
| 1998 🌧️ | 22.8°C | 18.9°C | 14.9°C | 27.2°C | 9.6°C | 132 mm | 77% | 2.8 m/s | 4.7 |
| 1997 | 24.0°C | 18.7°C | 13.4°C | 31.6°C | 9.2°C | 62 mm | 70% | 3.2 m/s | 4.9 |
| 1996 | 24.1°C | 17.7°C | 11.3°C | 30.4°C | 5.6°C | 35 mm | 68% | 3.1 m/s | 5.5 |
| 1995 | 24.4°C | 19.1°C | 13.7°C | 29.2°C | 6.4°C | 32 mm | 67% | 3 m/s | 5.2 |
| 1994 | 24.2°C | 17.8°C | 11.3°C | 29.9°C | 7.1°C | 22 mm | 58% | 3.1 m/s | 5.7 |
| 1993 | 22.1°C | 17.4°C | 12.7°C | 30.8°C | 7.9°C | 59 mm | 70% | 3 m/s | 4.9 |
| 1992 | 23.7°C | 17.7°C | 11.7°C | 30.0°C | 6.5°C | 33 mm | 64% | 3 m/s | 5.4 |
| 1991 | 25.8°C | 19.2°C | 12.5°C | 31.2°C | 6.9°C | 2 mm | 52% | 3 m/s | 5.8 |
| 1990 ❄️ | 21.2°C | 16.4°C | 11.7°C | 26.1°C | 7.6°C | 23 mm | 71% | 3.1 m/s | 5 |
| 1989 | 22.7°C | 16.7°C | 10.8°C | 28.2°C | 6.7°C | 11 mm | 69% | 3.2 m/s | 5.6 |
| 1988 | 22.2°C | 17.8°C | 13.5°C | 29.6°C | 7.9°C | 101 mm | 78% | 3.1 m/s | 4.9 |
| 1987 | 22.6°C | 17.2°C | 11.9°C | 27.1°C | 4.1°C | 5 mm | 70% | 2.4 m/s | 5.6 |
| 1986 | 24.5°C | 18.9°C | 13.3°C | 29.8°C | 7.3°C | 27 mm | 65% | 3.3 m/s | 5.3 |
| 1985 | 22.3°C | 17.0°C | 11.6°C | 27.4°C | 6.5°C | 58 mm | 70% | 2.9 m/s | 5.2 |
| 1984 | 22.4°C | 16.5°C | 10.6°C | 25.4°C | 5.9°C | 40 mm | 67% | 2.9 m/s | 5.6 |
| 1983 | 23.1°C | 18.5°C | 13.8°C | 29.1°C | 9.4°C | 68 mm | 79% | 3 m/s | — |
| 1982 | 23.0°C | 17.6°C | 12.2°C | 31.5°C | 7.2°C | 99 mm | 66% | 3 m/s | — |
| 1981 | 24.9°C | 19.4°C | 13.9°C | 33.3°C | 5.7°C | 10 mm | 65% | 2.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 24°C with lows near 13.3°C (mean 18.7°C), based on 45 years of NASA POWER data.
September averages 39 mm of rainfall in Gold Coast, one of the drier months. The wettest on record was 132 mm in 1998.
The hottest September reached 36.6°C in 2017. The coldest dipped to 4.1°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.6°C. Daytime highs moved from 23.1°C to 24.7°C and overnight lows from 12.4°C to 14.1°C over the same span.
September is one of the cooler months of the year in Gold Coast and one of the drier months, so plan for around 24°C daytime highs and 13.3°C at night.
Not quite — September is the 5th coolest month in Gold Coast, averaging 18.7°C.
For September in Gold Coast, pack light layers you can adjust through the day, with typical highs of 24°C and lows of 13.3°C.
Relative humidity in September averages 68% — moderately humid.
Average wind speed in September is 3.1 m/s. The windiest September on record averaged 3.4 m/s (2008).
The wettest September on record was 1998 with 132 mm. On average, September sees 39 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 Gold Coast 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.
