September is one of the cooler months of the year in Port Macquarie, with average highs near 20.2°C and lows around 16.1°C (mean 18.2°C). It is one of the drier months, averaging 48 mm of rainfall and 71% relative humidity across the period.
September is one of the cooler months of the year in Port Macquarie. Across 45 years of records, the warmest September in Port Macquarie was 2013 — when the month averaged 20.2°C — while the coldest was 1985 at 16.4°C. Typical September days reach 20.2°C with nights near 16.1°C. The long-term trend is warming, about 0.3°C per decade.
September is one of the drier months in Port Macquarie, averaging 48 mm of rainfall. The wettest September on record was 1988 with 171 mm, while the driest were 1991 and 2017 at 2 mm.
Relative humidity in Port Macquarie during September averages 71%. The most humid September was 1998 at 78%, and the least humid was 2003 at 61%.
September receives about 5.1 kWh/m²/day of solar energy in Port Macquarie. The sunniest Septembers were 2003 and 2017 at 5.8 kWh/m²/day, and the cloudiest was 2022 at 4.2.
Average wind speed in Port Macquarie during September is 4 m/s. The windiest Septembers were 2006 and 2008 at 4.4 m/s, while the calmest was 2025 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.5°C | 17.5°C | 18.6°C | 18.5°C | 18.6°C | +1.1°C |
| Avg High | 19.6°C | 19.5°C | 20.7°C | 20.6°C | 20.7°C | +1.1°C |
| Avg Low | 15.4°C | 15.5°C | 16.5°C | 16.4°C | 16.6°C | +1.2°C |
| Avg Rain | 65 mm | 50 mm | 49 mm | 38 mm | 37 mm | -28 mm |
September temperatures in Port Macquarie have risen by about 1.1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 10°C (1995) to a record high of 28.5°C (2003).
Rainfall in September is one of the drier months, averaging 48 mm, with a wettest year of 171 mm.
A good time to visit Port Macquarie
September is a good time to visit Port Macquarie, with days averaging 20.2°C and nights around 16.1°C (mean 18.2°C, cooler than Port Macquarie's yearly average) and moderate rainfall. December and April are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 21.2°C | 19.1°C | 17.1°C | 25.9°C | 13.9°C | 33 mm | 72% | 3.5 m/s | 5.1 |
| 2024 | 21.7°C | 19.4°C | 17.2°C | 25.3°C | 15.1°C | 38 mm | 67% | 4 m/s | 5 |
| 2023 | 21.4°C | 19.1°C | 16.8°C | 25.8°C | 14.2°C | 4 mm | 69% | 3.8 m/s | 5.4 |
| 2022 | 19.1°C | 17.5°C | 16.0°C | 22.1°C | 14.6°C | 95 mm | 75% | 3.9 m/s | 4.2 |
| 2021 | 20.2°C | 18.0°C | 15.8°C | 23.9°C | 13.3°C | 18 mm | 70% | 4.3 m/s | 5.1 |
| 2020 | 20.7°C | 18.7°C | 16.8°C | 25.0°C | 12.8°C | 32 mm | 71% | 3.9 m/s | 5.1 |
| 2019 | 20.6°C | 18.4°C | 16.3°C | 24.5°C | 14.4°C | 23 mm | 70% | 3.9 m/s | 5.2 |
| 2018 | 19.8°C | 18.0°C | 16.2°C | 24.3°C | 14.6°C | 66 mm | 72% | 4.3 m/s | 5 |
| 2017 | 21.9°C | 19.3°C | 16.6°C | 28.3°C | 13.6°C | 2 mm | 62% | 3.8 m/s | 5.8 |
| 2016 | 20.9°C | 18.9°C | 16.9°C | 23.5°C | 14.8°C | 26 mm | 70% | 4.2 m/s | 4.7 |
| 2015 | 19.6°C | 17.7°C | 15.9°C | 23.5°C | 13.7°C | 87 mm | 72% | 4.2 m/s | 4.8 |
| 2014 | 19.3°C | 17.5°C | 15.8°C | 23.8°C | 12.1°C | 21 mm | 73% | 4 m/s | 4.9 |
| 2013 🔥 | 22.5°C | 20.2°C | 17.9°C | 27.1°C | 15.4°C | 17 mm | 67% | 3.8 m/s | 5.6 |
| 2012 | 19.7°C | 17.6°C | 15.4°C | 24.4°C | 11.6°C | 19 mm | 70% | 3.7 m/s | 5.6 |
| 2011 | 20.0°C | 18.0°C | 16.0°C | 24.7°C | 12.2°C | 82 mm | 72% | 4 m/s | 5.1 |
| 2010 | 21.3°C | 19.2°C | 17.1°C | 24.6°C | 14.0°C | 34 mm | 69% | 3.7 m/s | 4.6 |
| 2009 | 21.4°C | 19.1°C | 16.8°C | 25.3°C | 14.1°C | 9 mm | 68% | 4.1 m/s | 5.5 |
| 2008 | 20.1°C | 18.2°C | 16.2°C | 25.1°C | 13.1°C | 83 mm | 75% | 4.4 m/s | 5.1 |
| 2007 | 19.9°C | 18.0°C | 16.2°C | 23.5°C | 14.8°C | 44 mm | 72% | 4 m/s | 5.2 |
| 2006 | 19.9°C | 18.2°C | 16.5°C | 24.4°C | 13.9°C | 136 mm | 77% | 4.4 m/s | 5.1 |
| 2005 | 20.2°C | 18.2°C | 16.2°C | 24.9°C | 13.5°C | 72 mm | 71% | 4 m/s | 4.9 |
| 2004 | 20.2°C | 18.3°C | 16.4°C | 26.0°C | 13.1°C | 77 mm | 72% | 3.7 m/s | 5.1 |
| 2003 | 22.0°C | 19.4°C | 16.8°C | 28.5°C | 13.3°C | 3 mm | 61% | 3.9 m/s | 5.8 |
| 2002 | 21.2°C | 18.9°C | 16.6°C | 27.7°C | 13.0°C | 14 mm | 70% | 4 m/s | 5.1 |
| 2001 | 20.5°C | 18.6°C | 16.7°C | 23.3°C | 15.0°C | 27 mm | 72% | 4.1 m/s | 4.7 |
| 2000 | 21.5°C | 19.1°C | 16.6°C | 26.3°C | 14.2°C | 20 mm | 69% | 3.6 m/s | 5.2 |
| 1999 | 19.4°C | 18.0°C | 16.6°C | 22.9°C | 13.8°C | 43 mm | 76% | 4 m/s | 4.9 |
| 1998 | 20.4°C | 18.7°C | 17.1°C | 23.7°C | 13.5°C | 132 mm | 78% | 4 m/s | 4.6 |
| 1997 | 20.0°C | 18.2°C | 16.3°C | 23.6°C | 14.7°C | 58 mm | 71% | 4 m/s | 4.4 |
| 1996 | 19.5°C | 17.3°C | 15.0°C | 24.1°C | 12.4°C | 29 mm | 73% | 4.2 m/s | 5 |
| 1995 | 19.2°C | 17.2°C | 15.2°C | 23.2°C | 10.0°C | 57 mm | 76% | 4 m/s | 4.5 |
| 1994 | 19.9°C | 17.4°C | 14.9°C | 22.7°C | 12.2°C | 22 mm | 64% | 3.9 m/s | 5.6 |
| 1993 | 19.0°C | 17.2°C | 15.3°C | 23.0°C | 12.8°C | 50 mm | 70% | 4.2 m/s | 4.9 |
| 1992 | 19.3°C | 16.9°C | 14.4°C | 24.3°C | 11.4°C | 29 mm | 66% | 3.8 m/s | 4.8 |
| 1991 | 20.6°C | 18.0°C | 15.3°C | 23.6°C | 11.9°C | 2 mm | 62% | 3.9 m/s | 5.7 |
| 1990 | 18.0°C | 16.5°C | 15.0°C | 22.1°C | 11.9°C | 77 mm | 75% | 4.1 m/s | 4.7 |
| 1989 | 18.9°C | 16.8°C | 14.8°C | 22.1°C | 10.6°C | 11 mm | 72% | 4.3 m/s | 5.4 |
| 1988 🌧️ | 19.9°C | 18.3°C | 16.7°C | 23.3°C | 12.7°C | 171 mm | 77% | 4.3 m/s | 4.7 |
| 1987 | 19.4°C | 17.2°C | 15.1°C | 24.1°C | 10.1°C | 7 mm | 72% | 3.6 m/s | 5.6 |
| 1986 | 19.6°C | 17.6°C | 15.6°C | 23.0°C | 11.8°C | 62 mm | 73% | 3.7 m/s | 4.8 |
| 1985 ❄️ | 18.1°C | 16.4°C | 14.6°C | 22.2°C | 10.2°C | 68 mm | 75% | 3.7 m/s | 5 |
| 1984 | 19.3°C | 16.9°C | 14.5°C | 22.4°C | 12.6°C | 32 mm | 67% | 4.3 m/s | 5.2 |
| 1983 | 20.6°C | 18.5°C | 16.3°C | 24.5°C | 14.0°C | 64 mm | 73% | 3.8 m/s | — |
| 1982 | 19.0°C | 17.0°C | 15.0°C | 24.4°C | 10.9°C | 154 mm | 70% | 4.2 m/s | — |
| 1981 | 21.2°C | 18.8°C | 16.3°C | 26.1°C | 11.3°C | 12 mm | 69% | 3.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 20.2°C with lows near 16.1°C (mean 18.2°C), based on 45 years of NASA POWER data.
September averages 48 mm of rainfall in Port Macquarie, one of the drier months. The wettest on record was 171 mm in 1988.
The hottest September reached 28.5°C in 2003. The coldest dipped to 10°C in 1995.
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 19.6°C to 20.7°C and overnight lows from 15.3°C to 16.6°C over the same span.
September is one of the cooler months of the year in Port Macquarie and one of the drier months, so plan for around 20.2°C daytime highs and 16.1°C at night.
Not quite — September is the 4th coolest month in Port Macquarie, averaging 18.2°C.
For September in Port Macquarie, pack light layers you can adjust through the day, with typical highs of 20.2°C and lows of 16.1°C.
Relative humidity in September averages 71% — moderately humid.
Average wind speed in September is 4 m/s. The windiest September on record averaged 4.4 m/s (2006).
The wettest September on record was 1988 with 171 mm. On average, September sees 48 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 Port Macquarie 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.
