September is one of the cooler months of the year in Yeppoon, with average highs near 26.3°C and lows around 17.4°C (mean 21.9°C). It is one of the drier months, averaging 24 mm of rainfall and 67% relative humidity across the period.
September is one of the cooler months of the year in Yeppoon. Across 45 years of records, the warmest September in Yeppoon was 2013 — when the month averaged 24°C — while the coldest was 1990 at 19.8°C. Typical September days reach 26.3°C with nights near 17.4°C. The long-term trend is warming, about 0.2°C per decade.
September is one of the drier months in Yeppoon, averaging 24 mm of rainfall. The wettest September on record was 2010 with 118 mm, while the driest was 2017 at 0 mm.
Relative humidity in Yeppoon during September averages 67%. The most humid September was 1998 at 80%, and the least humid was 1991 at 55%.
September receives about 5.9 kWh/m²/day of solar energy in Yeppoon. The sunniest September was 1991 at 6.6 kWh/m²/day, and the cloudiest was 2010 at 4.4.
Average wind speed in Yeppoon during September is 3.7 m/s. The windiest September was 1999 at 4.5 m/s, while the calmest was 1984 at 3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.3°C | 21.7°C | 21.9°C | 22.1°C | 22.2°C | +0.9°C |
| Avg High | 25.8°C | 26.2°C | 26.4°C | 26.6°C | 26.3°C | +0.5°C |
| Avg Low | 16.8°C | 17.3°C | 17.4°C | 17.7°C | 18.1°C | +1.3°C |
| Avg Rain | 24 mm | 28 mm | 21 mm | 27 mm | 15 mm | -8 mm |
September temperatures in Yeppoon have risen by about 0.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 9.3°C (2011) to a record high of 34.5°C (1997).
Rainfall in September is one of the drier months, averaging 24 mm, with a wettest year of 118 mm.
One of the best times to visit Yeppoon
September is one of the best times to visit Yeppoon. Expect days averaging 26.3°C and nights around 17.4°C (mean 21.9°C) — cooler than Yeppoon's yearly average — with low rainfall (24 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 | 26.6°C | 22.4°C | 18.3°C | 31.3°C | 15.4°C | 10 mm | 69% | 3.7 m/s | 6 |
| 2024 | 26.7°C | 22.5°C | 18.3°C | 31.3°C | 15.5°C | 3 mm | 66% | 3.7 m/s | 6 |
| 2023 | 26.5°C | 22.5°C | 18.6°C | 32.7°C | 17.0°C | 7 mm | 65% | 4.4 m/s | 6.2 |
| 2022 | 26.3°C | 22.0°C | 17.6°C | 30.1°C | 11.8°C | 50 mm | 71% | 3.1 m/s | 5.1 |
| 2021 | 25.8°C | 21.5°C | 17.3°C | 30.2°C | 11.9°C | 11 mm | 62% | 4.2 m/s | 6.1 |
| 2020 | 25.9°C | 22.2°C | 18.5°C | 30.7°C | 16.7°C | 11 mm | 70% | 4.4 m/s | 5.6 |
| 2019 | 27.5°C | 22.2°C | 16.9°C | 32.6°C | 11.7°C | 0 mm | 59% | 3.2 m/s | 6.5 |
| 2018 | 26.5°C | 22.2°C | 17.9°C | 31.5°C | 15.1°C | 3 mm | 64% | 3.9 m/s | 6.3 |
| 2017 | 28.1°C | 22.9°C | 17.8°C | 33.7°C | 13.5°C | 0 mm | 63% | 3.5 m/s | 6.5 |
| 2016 | 26.8°C | 22.7°C | 18.6°C | 32.3°C | 15.1°C | 52 mm | 71% | 3.7 m/s | 5.2 |
| 2015 | 26.1°C | 21.7°C | 17.3°C | 30.3°C | 13.9°C | 6 mm | 62% | 3.8 m/s | 6 |
| 2014 | 25.5°C | 21.2°C | 16.9°C | 30.1°C | 10.0°C | 62 mm | 67% | 3.5 m/s | 5.7 |
| 2013 🔥 | 28.7°C | 24.0°C | 19.2°C | 34.2°C | 16.8°C | 4 mm | 65% | 4.1 m/s | 6.3 |
| 2012 | 25.8°C | 21.4°C | 17.0°C | 30.0°C | 13.1°C | 15 mm | 67% | 3.3 m/s | 6.1 |
| 2011 | 24.7°C | 20.4°C | 16.0°C | 29.4°C | 9.3°C | 7 mm | 70% | 3.6 m/s | 6 |
| 2010 🌧️ | 26.2°C | 22.6°C | 19.1°C | 30.5°C | 16.6°C | 118 mm | 76% | 3.3 m/s | 4.4 |
| 2009 | 27.7°C | 23.1°C | 18.5°C | 33.3°C | 15.0°C | 4 mm | 60% | 3.6 m/s | 6.2 |
| 2008 | 25.8°C | 21.7°C | 17.5°C | 31.6°C | 13.5°C | 20 mm | 71% | 3.4 m/s | 5.7 |
| 2007 | 25.6°C | 21.4°C | 17.2°C | 30.0°C | 15.6°C | 74 mm | 72% | 3.4 m/s | 5.8 |
| 2006 | 24.8°C | 20.9°C | 17.0°C | 27.5°C | 10.9°C | 33 mm | 71% | 4.1 m/s | 5.9 |
| 2005 | 26.4°C | 21.9°C | 17.4°C | 30.6°C | 13.3°C | 6 mm | 66% | 3.4 m/s | 6.2 |
| 2004 | 25.8°C | 21.4°C | 17.0°C | 30.9°C | 11.5°C | 16 mm | 64% | 3.4 m/s | 6.2 |
| 2003 | 27.8°C | 22.6°C | 17.5°C | 31.8°C | 11.3°C | 7 mm | 62% | 3.4 m/s | 6.5 |
| 2002 | 26.8°C | 22.0°C | 17.3°C | 30.9°C | 12.7°C | 11 mm | 68% | 3.4 m/s | 6.3 |
| 2001 | 26.2°C | 22.0°C | 17.9°C | 30.4°C | 12.7°C | 36 mm | 67% | 4.1 m/s | 5.8 |
| 2000 | 27.0°C | 21.9°C | 16.9°C | 31.9°C | 13.8°C | 1 mm | 62% | 3.4 m/s | 6.4 |
| 1999 | 25.2°C | 21.4°C | 17.6°C | 28.7°C | 14.6°C | 20 mm | 70% | 4.5 m/s | 5.8 |
| 1998 | 24.5°C | 21.5°C | 18.5°C | 27.2°C | 12.8°C | 94 mm | 80% | 3.8 m/s | 4.9 |
| 1997 | 27.5°C | 22.8°C | 18.2°C | 34.5°C | 13.5°C | 29 mm | 67% | 3.8 m/s | 5.8 |
| 1996 | 26.9°C | 21.4°C | 16.0°C | 31.1°C | 10.2°C | 46 mm | 61% | 3.7 m/s | 6.2 |
| 1995 | 25.8°C | 21.5°C | 17.2°C | 31.6°C | 10.6°C | 14 mm | 66% | 3.5 m/s | 5.8 |
| 1994 | 26.7°C | 21.7°C | 16.7°C | 32.3°C | 10.7°C | 3 mm | 59% | 3.7 m/s | 6.3 |
| 1993 | 25.5°C | 21.7°C | 17.9°C | 32.1°C | 15.0°C | 38 mm | 68% | 4.3 m/s | 5.5 |
| 1992 | 27.3°C | 22.5°C | 17.6°C | 33.0°C | 12.8°C | 30 mm | 64% | 3.6 m/s | 5.6 |
| 1991 | 28.2°C | 22.7°C | 17.3°C | 32.9°C | 13.2°C | 0 mm | 55% | 3.3 m/s | 6.6 |
| 1990 ❄️ | 24.1°C | 19.8°C | 15.6°C | 27.2°C | 10.6°C | 4 mm | 66% | 3.9 m/s | 6 |
| 1989 | 25.6°C | 20.9°C | 16.2°C | 31.8°C | 11.7°C | 2 mm | 68% | 3.5 m/s | 6.2 |
| 1988 | 25.6°C | 21.2°C | 16.8°C | 34.4°C | 12.3°C | 9 mm | 71% | 3.6 m/s | 5.9 |
| 1987 | 25.3°C | 21.0°C | 16.8°C | 29.6°C | 11.8°C | 9 mm | 65% | 3.5 m/s | 5.8 |
| 1986 | 25.8°C | 21.3°C | 16.8°C | 31.6°C | 12.5°C | 74 mm | 67% | 3.6 m/s | 5.9 |
| 1985 | 26.0°C | 21.1°C | 16.1°C | 31.7°C | 9.7°C | 25 mm | 64% | 4 m/s | 6.2 |
| 1984 | 26.5°C | 21.4°C | 16.3°C | 30.4°C | 10.4°C | 34 mm | 63% | 3 m/s | 5.9 |
| 1983 | 26.5°C | 22.4°C | 18.4°C | 30.9°C | 15.1°C | 10 mm | 74% | 3.5 m/s | — |
| 1982 | 25.3°C | 20.8°C | 16.4°C | 32.8°C | 13.9°C | 42 mm | 69% | 3.4 m/s | — |
| 1981 | 25.7°C | 21.7°C | 17.6°C | 31.9°C | 10.7°C | 9 mm | 66% | 4.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 26.3°C with lows near 17.4°C (mean 21.9°C), based on 45 years of NASA POWER data.
September averages 24 mm of rainfall in Yeppoon, one of the drier months. The wettest on record was 118 mm in 2010.
The hottest September reached 34.5°C in 1997. The coldest dipped to 9.3°C in 2011.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.7°C. Daytime highs moved from 26°C to 26.4°C and overnight lows from 17°C to 18°C over the same span.
September is one of the cooler months of the year in Yeppoon and one of the drier months, so plan for around 26.3°C daytime highs and 17.4°C at night.
Not quite — September is the 5th coolest month in Yeppoon, averaging 21.9°C.
For September in Yeppoon, pack light layers you can adjust through the day, with typical highs of 26.3°C and lows of 17.4°C.
Relative humidity in September averages 67% — moderately humid.
Average wind speed in September is 3.7 m/s. The windiest September on record averaged 4.5 m/s (1999).
The wettest September on record was 2010 with 118 mm. On average, September sees 24 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 Yeppoon 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.
