September is one of the warmer months of the year in Beaumont, with average highs near 31.5°C and lows around 21.9°C (mean 26.7°C). It is a relatively wet time of year, averaging 136 mm of rainfall and 76% relative humidity across the period.
September is one of the warmer months of the year in Beaumont. Across 45 years of records, the warmest September in Beaumont was 2023 — when the month averaged 30.3°C — while the coldest was 1983 at 24.3°C. Typical September days reach 31.5°C with nights near 21.9°C. The long-term trend is warming, about 0.4°C per decade.
September is a relatively wet time of year in Beaumont, averaging 136 mm of rainfall. The wettest September on record was 2019 with 481 mm, while the driest was 1982 at 38 mm.
Relative humidity in Beaumont during September averages 76%. The most humid September was 2018 at 87%, and the least humid was 2011 at 63%.
September receives about 5.1 kWh/m²/day of solar energy in Beaumont. The sunniest Septembers were 2017 and 2022 at 5.7 kWh/m²/day, and the cloudiest were 2009 and 2018 at 4.
Average wind speed in Beaumont during September is 1.4 m/s. The windiest Septembers were 1998 and 2008 at 1.9 m/s, while the calmest were 2016, 2018 and 2022, among others at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.9°C | 26.7°C | 26.3°C | 27.2°C | 27.7°C | +1.8°C |
| Avg High | 30.7°C | 31.6°C | 31.1°C | 31.8°C | 32.9°C | +2.2°C |
| Avg Low | 21.1°C | 21.8°C | 21.6°C | 22.6°C | 22.4°C | +1.3°C |
| Avg Rain | 116 mm | 130 mm | 137 mm | 183 mm | 95 mm | -21 mm |
September temperatures in Beaumont have risen by about 2.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 9.1°C (1983) to a record high of 42.6°C (2000).
Rainfall in September is a relatively wet time of year, averaging 136 mm, with a wettest year of 481 mm.
A good time to visit Beaumont
September is a good time to visit Beaumont, with days averaging 31.5°C and nights around 21.9°C (mean 26.7°C, warmer than Beaumont's yearly average) and higher rainfall. October 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 | 33.8°C | 28.1°C | 22.4°C | 36.0°C | 16.5°C | 72 mm | 70% | 1.2 m/s | 5.6 |
| 2024 | 32.6°C | 27.4°C | 22.2°C | 35.2°C | 16.8°C | 60 mm | 77% | 1.4 m/s | 5.1 |
| 2023 🔥 | 36.1°C | 30.3°C | 24.4°C | 41.3°C | 19.7°C | 80 mm | 65% | 1.2 m/s | 5.4 |
| 2022 | 32.5°C | 27.0°C | 21.4°C | 36.4°C | 12.1°C | 47 mm | 74% | 1.1 m/s | 5.7 |
| 2021 | 30.9°C | 26.2°C | 21.5°C | 35.4°C | 14.2°C | 207 mm | 80% | 1.3 m/s | 5.2 |
| 2020 | 31.5°C | 27.0°C | 22.4°C | 35.8°C | 13.2°C | 105 mm | 76% | 1.7 m/s | 4.5 |
| 2019 🌧️ | 33.3°C | 28.7°C | 24.2°C | 37.5°C | 22.2°C | 481 mm | 76% | 1.6 m/s | 5.3 |
| 2018 | 30.0°C | 26.8°C | 23.7°C | 33.6°C | 20.3°C | 422 mm | 87% | 1.1 m/s | 4 |
| 2017 | 29.7°C | 25.2°C | 20.7°C | 32.0°C | 14.5°C | 51 mm | 82% | 1.2 m/s | 5.7 |
| 2016 | 31.5°C | 27.4°C | 23.3°C | 34.6°C | 13.8°C | 86 mm | 82% | 1.1 m/s | 5.5 |
| 2015 | 30.8°C | 26.4°C | 22.0°C | 34.5°C | 14.5°C | 193 mm | 80% | 1.2 m/s | 5.2 |
| 2014 | 30.6°C | 26.6°C | 22.6°C | 34.6°C | 16.4°C | 138 mm | 82% | 1.3 m/s | 4.8 |
| 2013 | 32.7°C | 28.1°C | 23.4°C | 37.1°C | 17.4°C | 193 mm | 75% | 1.5 m/s | 4.9 |
| 2012 | 32.6°C | 27.2°C | 21.8°C | 37.1°C | 15.4°C | 87 mm | 72% | 1.4 m/s | 5.3 |
| 2011 | 34.1°C | 27.7°C | 21.3°C | 37.9°C | 14.6°C | 73 mm | 63% | 1.7 m/s | 5.6 |
| 2010 | 32.7°C | 27.9°C | 23.1°C | 35.3°C | 13.7°C | 105 mm | 74% | 1.4 m/s | 5.1 |
| 2009 | 30.8°C | 26.3°C | 21.8°C | 34.3°C | 16.2°C | 114 mm | 78% | 1.2 m/s | 4 |
| 2008 | 29.5°C | 24.8°C | 20.1°C | 34.2°C | 15.2°C | 182 mm | 79% | 1.9 m/s | 5.1 |
| 2007 | 31.1°C | 26.7°C | 22.3°C | 32.9°C | 17.3°C | 129 mm | 81% | 1.1 m/s | 5 |
| 2006 | 30.9°C | 25.8°C | 20.7°C | 34.0°C | 13.7°C | 107 mm | 76% | 1.4 m/s | 5.2 |
| 2005 | 34.3°C | 29.2°C | 24.0°C | 38.9°C | 19.3°C | 136 mm | 70% | 1.6 m/s | 5.2 |
| 2004 | 33.6°C | 28.0°C | 22.3°C | 38.1°C | 17.3°C | 46 mm | 68% | 1.4 m/s | 5.4 |
| 2003 | 28.6°C | 24.5°C | 20.3°C | 31.4°C | 12.4°C | 192 mm | 81% | 1.3 m/s | 5 |
| 2002 | 29.8°C | 25.8°C | 21.8°C | 34.6°C | 16.7°C | 186 mm | 83% | 1.8 m/s | 4.5 |
| 2001 | 28.8°C | 24.8°C | 20.9°C | 33.1°C | 11.0°C | 182 mm | 85% | 1.4 m/s | 5 |
| 2000 | 33.1°C | 27.3°C | 21.5°C | 42.6°C | 11.3°C | 98 mm | 67% | 1.7 m/s | 5.2 |
| 1999 | 32.9°C | 26.8°C | 20.8°C | 37.7°C | 12.8°C | 80 mm | 64% | 1.4 m/s | 5.6 |
| 1998 | 31.2°C | 27.5°C | 23.9°C | 36.5°C | 21.6°C | 317 mm | 83% | 1.9 m/s | 4.9 |
| 1997 | 33.3°C | 27.9°C | 22.5°C | 36.2°C | 14.9°C | 121 mm | 70% | 1.4 m/s | 5.2 |
| 1996 | 29.8°C | 25.4°C | 21.1°C | 33.2°C | 10.4°C | 227 mm | 80% | 1.2 m/s | 5 |
| 1995 | 33.6°C | 27.9°C | 22.3°C | 37.7°C | 13.2°C | 48 mm | 68% | 1.2 m/s | 5.4 |
| 1994 | 30.3°C | 25.4°C | 20.4°C | 33.4°C | 11.5°C | 93 mm | 76% | 1.2 m/s | 5.4 |
| 1993 | 33.8°C | 27.6°C | 21.5°C | 37.5°C | 12.6°C | 60 mm | 68% | 1.5 m/s | 5.2 |
| 1992 | 31.2°C | 26.6°C | 22.0°C | 34.0°C | 12.5°C | 77 mm | 75% | 1.5 m/s | 4.8 |
| 1991 | 28.4°C | 24.6°C | 20.7°C | 31.2°C | 11.2°C | 144 mm | 84% | 1.3 m/s | 4.7 |
| 1990 | 31.2°C | 26.8°C | 22.4°C | 36.8°C | 11.9°C | 132 mm | 76% | 1.1 m/s | 4.8 |
| 1989 | 30.5°C | 25.0°C | 19.5°C | 35.2°C | 11.1°C | 48 mm | 73% | 1.3 m/s | 5.3 |
| 1988 | 31.4°C | 26.4°C | 21.4°C | 34.6°C | 13.9°C | 128 mm | 76% | 1.5 m/s | 4.6 |
| 1987 | 31.1°C | 26.0°C | 21.0°C | 34.7°C | 14.6°C | 131 mm | 72% | 1.3 m/s | 4.9 |
| 1986 | 30.7°C | 27.2°C | 23.8°C | 32.4°C | 21.6°C | 139 mm | 82% | 1.4 m/s | 4.3 |
| 1985 | 31.1°C | 26.3°C | 21.6°C | 38.7°C | 12.9°C | 158 mm | 74% | 1.7 m/s | 5 |
| 1984 | 30.3°C | 25.4°C | 20.6°C | 34.4°C | 10.4°C | 94 mm | 73% | 1.7 m/s | 4.7 |
| 1983 ❄️ | 28.2°C | 24.3°C | 20.3°C | 32.7°C | 9.1°C | 226 mm | 83% | 1.5 m/s | — |
| 1982 | 32.8°C | 27.2°C | 21.6°C | 36.4°C | 12.7°C | 38 mm | 66% | 1.5 m/s | — |
| 1981 | 29.8°C | 25.0°C | 20.3°C | 32.8°C | 10.3°C | 83 mm | 78% | 1.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 31.5°C with lows near 21.9°C (mean 26.7°C), based on 45 years of NASA POWER data.
September averages 136 mm of rainfall in Beaumont, a relatively wet time of year. The wettest on record was 481 mm in 2019.
The hottest September reached 42.6°C in 2000. The coldest dipped to 9.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.2°C. Daytime highs moved from 30.4°C to 33.2°C and overnight lows from 20.9°C to 22.4°C over the same span.
September is one of the warmer months of the year in Beaumont and a relatively wet time of year, so plan for around 31.5°C daytime highs and 21.9°C at night.
Not quite — September is the 9th coolest month in Beaumont, averaging 26.7°C.
For September in Beaumont, pack light, breathable clothing and sun protection, with typical highs of 31.5°C and lows of 21.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 76% — quite humid.
Average wind speed in September is 1.4 m/s. The windiest September on record averaged 1.9 m/s (1998).
The wettest September on record was 2019 with 481 mm. On average, September sees 136 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 Beaumont 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.
