September is one of the cooler months of the year in Bowen, with average highs near 27.2°C and lows around 19.6°C (mean 23.4°C). It is one of the drier months, averaging 10 mm of rainfall and 68% relative humidity across the period.
September is one of the cooler months of the year in Bowen. Across 45 years of records, the warmest September in Bowen was 2010 — when the month averaged 25°C — while the coldest was 1990 at 21.4°C. Typical September days reach 27.2°C with nights near 19.6°C. The long-term trend is warming, about 0.2°C per decade.
September is one of the drier months in Bowen, averaging 10 mm of rainfall. The wettest September on record was 2010 with 77 mm, while the driest was 2019 at 0 mm.
Relative humidity in Bowen during September averages 68%. The most humid September was 1998 at 79%, and the least humid was 1991 at 59%.
September receives about 6.1 kWh/m²/day of solar energy in Bowen. The sunniest Septembers were 2003 and 2019 at 6.7 kWh/m²/day, and the cloudiest was 2010 at 4.7.
Average wind speed in Bowen during September is 3.7 m/s. The windiest September was 1981 at 4.8 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 | 23.2°C | 23.1°C | 23.5°C | 23.5°C | 23.7°C | +0.5°C |
| Avg High | 27.1°C | 26.8°C | 27.4°C | 27.3°C | 27.3°C | +0.2°C |
| Avg Low | 19.3°C | 19.3°C | 19.6°C | 19.8°C | 20.1°C | +0.8°C |
| Avg Rain | 7 mm | 14 mm | 7 mm | 14 mm | 7 mm | 0 mm |
September temperatures in Bowen have risen by about 0.5°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 11.9°C (1990) to a record high of 34.9°C (1986).
Rainfall in September is one of the drier months, averaging 10 mm, with a wettest year of 77 mm.
One of the best times to visit Bowen
September is one of the best times to visit Bowen. Expect days averaging 27.2°C and nights around 19.6°C (mean 23.4°C) — cooler than Bowen's yearly average — with low rainfall (10 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 | 27.9°C | 24.1°C | 20.3°C | 32.0°C | 16.5°C | 4 mm | 69% | 4.1 m/s | 6.2 |
| 2024 | 27.8°C | 24.2°C | 20.7°C | 32.7°C | 19.0°C | 5 mm | 68% | 4.1 m/s | 5.7 |
| 2023 | 27.2°C | 23.7°C | 20.2°C | 31.5°C | 18.9°C | 7 mm | 69% | 4.5 m/s | 6.2 |
| 2022 | 27.8°C | 24.0°C | 20.3°C | 31.0°C | 15.8°C | 15 mm | 73% | 3.2 m/s | 6 |
| 2021 | 26.2°C | 22.7°C | 19.2°C | 32.6°C | 15.1°C | 3 mm | 69% | 4.3 m/s | 6.2 |
| 2020 | 26.9°C | 23.5°C | 20.1°C | 31.6°C | 17.5°C | 6 mm | 72% | 4.5 m/s | 5.9 |
| 2019 | 27.2°C | 22.9°C | 18.5°C | 30.4°C | 15.5°C | 0 mm | 64% | 3.5 m/s | 6.7 |
| 2018 | 27.5°C | 23.6°C | 19.7°C | 32.1°C | 16.8°C | 4 mm | 66% | 3.9 m/s | 6.5 |
| 2017 | 27.6°C | 23.8°C | 19.9°C | 32.7°C | 18.5°C | 1 mm | 67% | 3.5 m/s | 6.6 |
| 2016 | 27.7°C | 24.4°C | 21.1°C | 32.4°C | 18.5°C | 24 mm | 76% | 3.4 m/s | 5.4 |
| 2015 | 27.3°C | 23.4°C | 19.5°C | 30.6°C | 16.8°C | 9 mm | 65% | 3.8 m/s | 6.2 |
| 2014 | 27.0°C | 23.1°C | 19.3°C | 30.4°C | 15.9°C | 12 mm | 68% | 3.3 m/s | 6.2 |
| 2013 | 27.7°C | 24.1°C | 20.5°C | 31.3°C | 18.0°C | 5 mm | 70% | 3.7 m/s | 6.3 |
| 2012 | 26.8°C | 23.1°C | 19.4°C | 29.4°C | 17.4°C | 3 mm | 68% | 3.5 m/s | 6.2 |
| 2011 | 26.1°C | 22.0°C | 18.0°C | 30.9°C | 14.7°C | 2 mm | 68% | 4 m/s | 6.3 |
| 2010 🔥 🌧️ | 28.0°C | 25.0°C | 22.0°C | 32.4°C | 19.1°C | 77 mm | 78% | 3.6 m/s | 4.7 |
| 2009 | 28.4°C | 24.4°C | 20.4°C | 32.1°C | 16.7°C | 1 mm | 63% | 3.5 m/s | 6.3 |
| 2008 | 27.0°C | 23.3°C | 19.5°C | 29.5°C | 16.9°C | 9 mm | 71% | 3.7 m/s | 6.1 |
| 2007 | 27.2°C | 23.1°C | 19.1°C | 32.1°C | 17.2°C | 20 mm | 70% | 3.2 m/s | 6.1 |
| 2006 | 26.5°C | 22.7°C | 18.9°C | 30.2°C | 13.6°C | 11 mm | 67% | 4.4 m/s | 6.1 |
| 2005 | 27.2°C | 23.4°C | 19.6°C | 30.7°C | 17.6°C | 1 mm | 67% | 3.5 m/s | 6.4 |
| 2004 | 26.5°C | 22.8°C | 19.2°C | 28.5°C | 16.3°C | 5 mm | 65% | 3.9 m/s | 6.3 |
| 2003 | 27.9°C | 23.9°C | 19.9°C | 33.1°C | 16.8°C | 1 mm | 62% | 3.5 m/s | 6.7 |
| 2002 | 27.7°C | 23.6°C | 19.6°C | 31.1°C | 17.9°C | 3 mm | 67% | 3.3 m/s | 6.5 |
| 2001 | 27.7°C | 24.0°C | 20.2°C | 32.5°C | 17.8°C | 16 mm | 68% | 4.1 m/s | 5.9 |
| 2000 | 27.7°C | 23.6°C | 19.6°C | 34.1°C | 17.3°C | 0 mm | 64% | 3.9 m/s | 6.5 |
| 1999 | 26.5°C | 22.8°C | 19.1°C | 31.5°C | 16.6°C | 11 mm | 71% | 4.3 m/s | 6.1 |
| 1998 | 26.4°C | 23.5°C | 20.6°C | 28.7°C | 17.9°C | 19 mm | 79% | 3.8 m/s | 5.6 |
| 1997 | 27.4°C | 23.5°C | 19.7°C | 31.3°C | 16.5°C | 5 mm | 72% | 3.5 m/s | 6.2 |
| 1996 | 26.9°C | 22.7°C | 18.5°C | 30.8°C | 14.1°C | 30 mm | 64% | 3.6 m/s | 6.5 |
| 1995 | 26.4°C | 22.6°C | 18.8°C | 31.8°C | 14.0°C | 3 mm | 70% | 3.5 m/s | 6.3 |
| 1994 | 26.5°C | 22.5°C | 18.5°C | 31.6°C | 16.1°C | 5 mm | 67% | 3.4 m/s | 6.3 |
| 1993 | 26.3°C | 23.0°C | 19.6°C | 29.2°C | 18.1°C | 32 mm | 72% | 4 m/s | 5.5 |
| 1992 | 28.1°C | 24.6°C | 21.1°C | 30.6°C | 18.2°C | 27 mm | 70% | 3.3 m/s | 5.6 |
| 1991 | 28.4°C | 24.0°C | 19.5°C | 32.2°C | 15.4°C | 0 mm | 59% | 3.3 m/s | 6.6 |
| 1990 ❄️ | 25.3°C | 21.4°C | 17.5°C | 26.9°C | 11.9°C | 3 mm | 65% | 4.4 m/s | 6.2 |
| 1989 | 27.5°C | 23.2°C | 18.9°C | 34.1°C | 14.1°C | 0 mm | 67% | 3.4 m/s | 6.4 |
| 1988 | 27.0°C | 22.8°C | 18.6°C | 29.9°C | 14.6°C | 2 mm | 72% | 3.5 m/s | 6.2 |
| 1987 | 26.6°C | 23.0°C | 19.5°C | 28.2°C | 15.4°C | 3 mm | 66% | 4.1 m/s | 5.7 |
| 1986 | 27.8°C | 23.9°C | 20.0°C | 34.9°C | 18.1°C | 14 mm | 67% | 3.7 m/s | 5.9 |
| 1985 | 27.2°C | 22.9°C | 18.5°C | 32.4°C | 12.3°C | 2 mm | 64% | 3.6 m/s | 6.4 |
| 1984 | 27.5°C | 23.5°C | 19.4°C | 30.2°C | 15.5°C | 24 mm | 66% | 3 m/s | 6.1 |
| 1983 | 27.7°C | 24.1°C | 20.5°C | 31.6°C | 17.1°C | 7 mm | 72% | 3.6 m/s | — |
| 1982 | 26.2°C | 22.2°C | 18.2°C | 34.6°C | 15.3°C | 6 mm | 69% | 3.5 m/s | — |
| 1981 | 26.7°C | 23.2°C | 19.8°C | 30.2°C | 16.8°C | 6 mm | 66% | 4.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 27.2°C with lows near 19.6°C (mean 23.4°C), based on 45 years of NASA POWER data.
September averages 10 mm of rainfall in Bowen, one of the drier months. The wettest on record was 77 mm in 2010.
The hottest September reached 34.9°C in 1986. The coldest dipped to 11.9°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.5°C. Daytime highs moved from 27.1°C to 27.4°C and overnight lows from 19.3°C to 20.1°C over the same span.
September is one of the cooler months of the year in Bowen and one of the drier months, so plan for around 27.2°C daytime highs and 19.6°C at night.
Not quite — September is the 4th coolest month in Bowen, averaging 23.4°C.
For September in Bowen, pack light layers you can adjust through the day, with typical highs of 27.2°C and lows of 19.6°C.
Relative humidity in September averages 68% — moderately humid.
Average wind speed in September is 3.7 m/s. The windiest September on record averaged 4.8 m/s (1981).
The wettest September on record was 2010 with 77 mm. On average, September sees 10 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 Bowen 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.
