September is one of the cooler months of the year in Gracemere, with average highs near 27.7°C and lows around 15.3°C (mean 21.5°C). It is one of the drier months, averaging 26 mm of rainfall and 65% relative humidity across the period.
September is one of the cooler months of the year in Gracemere. Across 45 years of records, the warmest September in Gracemere was 2013 — when the month averaged 24.1°C — while the coldest was 1990 at 19.3°C. Typical September days reach 27.7°C with nights near 15.3°C. The long-term trend is warming, about 0.3°C per decade.
September is one of the drier months in Gracemere, averaging 26 mm of rainfall. The wettest September on record was 2010 with 140 mm, while the driest was 2017 at 0 mm.
Relative humidity in Gracemere during September averages 65%. The most humid September was 1998 at 80%, and the least humid was 1991 at 52%.
September receives about 5.9 kWh/m²/day of solar energy in Gracemere. The sunniest September was 1991 at 6.6 kWh/m²/day, and the cloudiest was 2010 at 4.4.
Average wind speed in Gracemere during September is 2.9 m/s. The windiest September was 1999 at 3.5 m/s, while the calmest was 1984 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.9°C | 21.3°C | 21.6°C | 21.8°C | 21.9°C | +1°C |
| Avg High | 27.1°C | 27.5°C | 28.0°C | 28.1°C | 27.9°C | +0.8°C |
| Avg Low | 14.6°C | 15.1°C | 15.3°C | 15.5°C | 16.0°C | +1.4°C |
| Avg Rain | 26 mm | 34 mm | 18 mm | 31 mm | 15 mm | -11 mm |
September temperatures in Gracemere have risen by about 0.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 6.7°C (1985) to a record high of 38.4°C (2013).
Rainfall in September is one of the drier months, averaging 26 mm, with a wettest year of 140 mm.
One of the best times to visit Gracemere
September is one of the best times to visit Gracemere. Expect days averaging 27.7°C and nights around 15.3°C (mean 21.5°C) — cooler than Gracemere's yearly average — with low rainfall (26 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 | 28.3°C | 22.3°C | 16.3°C | 34.4°C | 13.0°C | 11 mm | 67% | 2.8 m/s | 6 |
| 2024 | 28.1°C | 22.1°C | 16.2°C | 33.1°C | 13.2°C | 4 mm | 66% | 2.9 m/s | 6 |
| 2023 | 28.5°C | 22.4°C | 16.4°C | 34.7°C | 14.2°C | 5 mm | 64% | 3.3 m/s | 6.2 |
| 2022 | 27.5°C | 21.5°C | 15.5°C | 31.9°C | 10.4°C | 47 mm | 70% | 2.5 m/s | 5.1 |
| 2021 | 27.5°C | 21.3°C | 15.0°C | 32.7°C | 9.7°C | 12 mm | 61% | 3.3 m/s | 6.1 |
| 2020 | 27.4°C | 22.0°C | 16.5°C | 32.3°C | 14.0°C | 14 mm | 69% | 3.4 m/s | 5.6 |
| 2019 | 29.6°C | 22.3°C | 15.0°C | 34.9°C | 9.1°C | 0 mm | 56% | 2.6 m/s | 6.5 |
| 2018 | 28.2°C | 21.9°C | 15.7°C | 32.5°C | 12.5°C | 7 mm | 63% | 3.1 m/s | 6.3 |
| 2017 | 30.3°C | 23.0°C | 15.6°C | 37.2°C | 10.2°C | 0 mm | 59% | 2.7 m/s | 6.5 |
| 2016 | 27.7°C | 22.2°C | 16.6°C | 33.3°C | 12.5°C | 57 mm | 70% | 3.1 m/s | 5.2 |
| 2015 | 27.3°C | 21.1°C | 14.9°C | 30.7°C | 10.2°C | 9 mm | 62% | 2.9 m/s | 6 |
| 2014 | 26.6°C | 20.7°C | 14.7°C | 31.5°C | 7.5°C | 67 mm | 67% | 2.8 m/s | 5.7 |
| 2013 🔥 | 31.0°C | 24.1°C | 17.3°C | 38.4°C | 14.4°C | 5 mm | 62% | 3.2 m/s | 6.3 |
| 2012 | 27.2°C | 21.0°C | 14.8°C | 32.7°C | 9.8°C | 18 mm | 67% | 2.7 m/s | 6.1 |
| 2011 | 26.1°C | 19.9°C | 13.7°C | 30.7°C | 6.8°C | 5 mm | 69% | 2.8 m/s | 6 |
| 2010 🌧️ | 26.5°C | 21.8°C | 17.0°C | 30.3°C | 13.0°C | 140 mm | 77% | 2.6 m/s | 4.4 |
| 2009 | 29.5°C | 22.9°C | 16.3°C | 34.7°C | 12.0°C | 9 mm | 58% | 2.8 m/s | 6.2 |
| 2008 | 27.3°C | 21.5°C | 15.7°C | 34.0°C | 11.3°C | 22 mm | 71% | 2.7 m/s | 5.7 |
| 2007 | 27.1°C | 21.1°C | 15.2°C | 32.2°C | 12.7°C | 51 mm | 70% | 2.7 m/s | 5.8 |
| 2006 | 26.0°C | 20.5°C | 14.9°C | 29.9°C | 8.5°C | 24 mm | 71% | 3.2 m/s | 5.9 |
| 2005 | 28.0°C | 21.6°C | 15.3°C | 33.3°C | 10.5°C | 9 mm | 65% | 2.8 m/s | 6.2 |
| 2004 | 27.4°C | 21.1°C | 14.7°C | 33.3°C | 9.2°C | 17 mm | 64% | 2.7 m/s | 6.2 |
| 2003 | 29.4°C | 22.3°C | 15.1°C | 33.7°C | 8.3°C | 5 mm | 60% | 2.7 m/s | 6.5 |
| 2002 | 28.2°C | 21.6°C | 15.0°C | 32.2°C | 10.2°C | 10 mm | 66% | 2.7 m/s | 6.3 |
| 2001 | 27.5°C | 21.6°C | 15.6°C | 32.0°C | 10.5°C | 30 mm | 66% | 3.2 m/s | 5.8 |
| 2000 | 29.1°C | 22.1°C | 15.0°C | 32.9°C | 11.5°C | 0 mm | 59% | 2.8 m/s | 6.4 |
| 1999 | 26.7°C | 21.1°C | 15.5°C | 30.6°C | 12.2°C | 20 mm | 69% | 3.5 m/s | 5.8 |
| 1998 | 25.2°C | 20.9°C | 16.6°C | 28.2°C | 10.4°C | 98 mm | 80% | 3.1 m/s | 4.9 |
| 1997 | 28.9°C | 22.6°C | 16.3°C | 36.2°C | 11.6°C | 32 mm | 65% | 2.9 m/s | 5.8 |
| 1996 | 28.4°C | 21.0°C | 13.6°C | 34.2°C | 7.7°C | 68 mm | 60% | 2.9 m/s | 6.2 |
| 1995 | 27.2°C | 21.2°C | 15.1°C | 32.0°C | 7.1°C | 15 mm | 65% | 2.8 m/s | 5.8 |
| 1994 | 28.3°C | 21.4°C | 14.5°C | 35.2°C | 8.7°C | 4 mm | 55% | 2.9 m/s | 6.3 |
| 1993 | 26.2°C | 20.9°C | 15.6°C | 33.9°C | 12.1°C | 56 mm | 69% | 3.3 m/s | 5.5 |
| 1992 | 28.3°C | 21.8°C | 15.3°C | 34.5°C | 10.3°C | 42 mm | 62% | 3 m/s | 5.6 |
| 1991 | 30.0°C | 22.5°C | 15.1°C | 34.6°C | 10.3°C | 0 mm | 52% | 2.6 m/s | 6.6 |
| 1990 ❄️ | 25.3°C | 19.3°C | 13.3°C | 29.7°C | 8.5°C | 5 mm | 65% | 3.1 m/s | 6 |
| 1989 | 27.3°C | 20.7°C | 14.0°C | 33.2°C | 9.3°C | 3 mm | 65% | 2.8 m/s | 6.2 |
| 1988 | 26.7°C | 20.7°C | 14.7°C | 35.5°C | 10.0°C | 9 mm | 70% | 3 m/s | 5.9 |
| 1987 | 26.8°C | 20.6°C | 14.5°C | 31.5°C | 8.8°C | 9 mm | 64% | 2.7 m/s | 5.8 |
| 1986 | 26.9°C | 20.8°C | 14.7°C | 31.9°C | 8.9°C | 72 mm | 66% | 2.9 m/s | 5.9 |
| 1985 | 27.4°C | 20.7°C | 14.0°C | 33.0°C | 6.7°C | 29 mm | 61% | 3.1 m/s | 6.2 |
| 1984 | 27.0°C | 20.3°C | 13.7°C | 30.4°C | 7.7°C | 48 mm | 62% | 2.4 m/s | 5.9 |
| 1983 | 27.9°C | 22.1°C | 16.4°C | 33.3°C | 12.5°C | 11 mm | 73% | 2.8 m/s | — |
| 1982 | 26.7°C | 20.4°C | 14.2°C | 33.1°C | 10.6°C | 51 mm | 68% | 2.7 m/s | — |
| 1981 | 27.4°C | 21.5°C | 15.6°C | 33.9°C | 7.9°C | 4 mm | 65% | 3.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 27.7°C with lows near 15.3°C (mean 21.5°C), based on 45 years of NASA POWER data.
September averages 26 mm of rainfall in Gracemere, one of the drier months. The wettest on record was 140 mm in 2010.
The hottest September reached 38.4°C in 2013. The coldest dipped to 6.7°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.9°C. Daytime highs moved from 27.3°C to 28°C and overnight lows from 14.8°C to 15.9°C over the same span.
September is one of the cooler months of the year in Gracemere and one of the drier months, so plan for around 27.7°C daytime highs and 15.3°C at night.
Not quite — September is the 5th coolest month in Gracemere, averaging 21.5°C.
For September in Gracemere, pack light layers you can adjust through the day, with typical highs of 27.7°C and lows of 15.3°C.
Relative humidity in September averages 65% — moderately humid.
Average wind speed in September is 2.9 m/s. The windiest September on record averaged 3.5 m/s (1999).
The wettest September on record was 2010 with 140 mm. On average, September sees 26 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 Gracemere 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.
