August is one of the warmer months of the year in Brentwood, with average highs near 32.2°C and lows around 20.2°C (mean 26.2°C). It is one of the drier months, averaging 92 mm of rainfall and 68% relative humidity across the period.
August is one of the warmer months of the year in Brentwood. Across 45 years of records, the warmest August in Brentwood was 2007 — when the month averaged 30.8°C — while the coldest was 2004 at 22.9°C. Typical August days reach 32.2°C with nights near 20.2°C. The long-term August temperature trend is broadly flat.
August is one of the drier months in Brentwood, averaging 92 mm of rainfall. The wettest August on record was 2021 with 214 mm, while the driest was 2024 at 24 mm.
Relative humidity in Brentwood during August averages 68%. The most humid August was 2013 at 82%, and the least humid was 1999 at 50%.
August receives about 5.5 kWh/m²/day of solar energy in Brentwood. The sunniest August was 2024 at 6.4 kWh/m²/day, and the cloudiest was 1992 at 4.8.
Average wind speed in Brentwood during August is 1.2 m/s. The windiest Augusts were 1986, 1999 and 2004 at 1.5 m/s, while the calmest was 1996 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.0°C | 26.0°C | 26.7°C | 26.0°C | 26.1°C | +0.1°C |
| Avg High | 32.1°C | 32.2°C | 32.8°C | 31.8°C | 32.0°C | -0.1°C |
| Avg Low | 19.9°C | 19.8°C | 20.6°C | 20.3°C | 20.2°C | +0.3°C |
| Avg Rain | 93 mm | 68 mm | 83 mm | 111 mm | 112 mm | +20 mm |
August temperatures in Brentwood have risen by about 0.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 9.2°C (1986) to a record high of 42.1°C (2007).
Rainfall in August is one of the drier months, averaging 92 mm, with a wettest year of 214 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit Brentwood
August is one of the best times to visit Brentwood. Expect days averaging 32.2°C and nights around 20.2°C (mean 26.2°C) — warmer than Brentwood's yearly average — with higher rainfall (92 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 | 33.0°C | 26.3°C | 19.6°C | 38.0°C | 12.3°C | 50 mm | 60% | 1.1 m/s | 5.6 |
| 2024 | 34.6°C | 27.2°C | 19.8°C | 39.8°C | 14.0°C | 24 mm | 57% | 1.3 m/s | 6.4 |
| 2023 | 31.1°C | 25.5°C | 19.9°C | 37.4°C | 14.0°C | 143 mm | 75% | 1.2 m/s | 5.5 |
| 2022 | 31.7°C | 26.1°C | 20.5°C | 35.4°C | 15.8°C | 87 mm | 74% | 1.2 m/s | 5.5 |
| 2021 🌧️ | 31.1°C | 26.0°C | 20.9°C | 35.0°C | 16.1°C | 214 mm | 75% | 1.1 m/s | 5.2 |
| 2020 | 30.3°C | 25.2°C | 20.2°C | 33.7°C | 17.4°C | 157 mm | 77% | 1.2 m/s | 5.4 |
| 2019 | 32.5°C | 26.5°C | 20.5°C | 36.4°C | 15.3°C | 109 mm | 71% | 1 m/s | 6.1 |
| 2018 | 32.1°C | 26.5°C | 20.8°C | 35.8°C | 14.8°C | 83 mm | 70% | 1.3 m/s | 5.7 |
| 2017 | 30.4°C | 24.7°C | 19.1°C | 35.0°C | 13.4°C | 186 mm | 72% | 1.2 m/s | 5.4 |
| 2016 | 31.5°C | 26.8°C | 22.0°C | 33.6°C | 15.7°C | 141 mm | 78% | 1.1 m/s | 5.5 |
| 2015 | 30.2°C | 24.4°C | 18.7°C | 34.4°C | 13.4°C | 82 mm | 73% | 1.2 m/s | 5.5 |
| 2014 | 32.3°C | 26.5°C | 20.6°C | 36.1°C | 14.4°C | 133 mm | 69% | 1.1 m/s | 5.6 |
| 2013 | 29.0°C | 24.3°C | 19.6°C | 33.7°C | 12.0°C | 102 mm | 82% | 1.1 m/s | 4.9 |
| 2012 | 31.8°C | 25.6°C | 19.5°C | 37.3°C | 13.8°C | 92 mm | 67% | 1.2 m/s | 5.6 |
| 2011 | 34.4°C | 27.5°C | 20.7°C | 39.5°C | 16.6°C | 39 mm | 62% | 1.3 m/s | 6 |
| 2010 | 33.3°C | 27.5°C | 21.7°C | 38.9°C | 15.3°C | 145 mm | 72% | 1.2 m/s | 5.9 |
| 2009 | 30.3°C | 24.8°C | 19.4°C | 33.3°C | 13.0°C | 63 mm | 74% | 1.3 m/s | 5.6 |
| 2008 | 32.3°C | 25.8°C | 19.4°C | 36.7°C | 15.4°C | 64 mm | 63% | 1.2 m/s | 5.4 |
| 2007 🔥 | 37.6°C | 30.8°C | 23.9°C | 42.1°C | 21.0°C | 32 mm | 51% | 1.3 m/s | 6 |
| 2006 | 33.5°C | 27.7°C | 21.9°C | 37.8°C | 16.5°C | 94 mm | 68% | 1.2 m/s | 5.5 |
| 2005 | 34.2°C | 28.0°C | 21.8°C | 38.4°C | 17.0°C | 158 mm | 67% | 1.3 m/s | 5.4 |
| 2004 ❄️ | 28.5°C | 22.9°C | 17.2°C | 33.7°C | 10.7°C | 105 mm | 75% | 1.5 m/s | 5.4 |
| 2003 | 31.1°C | 26.0°C | 20.8°C | 34.5°C | 17.2°C | 89 mm | 77% | 1.1 m/s | 5.6 |
| 2002 | 33.6°C | 27.2°C | 20.8°C | 38.5°C | 15.5°C | 64 mm | 63% | 1.3 m/s | 5.7 |
| 2001 | 32.3°C | 26.4°C | 20.5°C | 35.8°C | 15.1°C | 105 mm | 68% | 1.2 m/s | 5.1 |
| 2000 | 34.7°C | 27.7°C | 20.7°C | 40.0°C | 14.4°C | 59 mm | 58% | 1.4 m/s | 5.7 |
| 1999 | 34.8°C | 27.1°C | 19.5°C | 39.2°C | 14.8°C | 32 mm | 50% | 1.5 m/s | 6.1 |
| 1998 | 31.6°C | 25.6°C | 19.6°C | 36.2°C | 15.3°C | 40 mm | 70% | 1.1 m/s | 5.9 |
| 1997 | 31.3°C | 25.2°C | 19.2°C | 35.1°C | 12.3°C | 79 mm | 68% | 1.4 m/s | 5.6 |
| 1996 | 30.7°C | 25.0°C | 19.3°C | 34.9°C | 14.9°C | 53 mm | 70% | 0.9 m/s | 5.6 |
| 1995 | 34.4°C | 28.5°C | 22.5°C | 38.0°C | 17.5°C | 90 mm | 67% | 1.3 m/s | 5.5 |
| 1994 | 30.9°C | 24.8°C | 18.6°C | 34.2°C | 13.8°C | 100 mm | 70% | 1.2 m/s | 5.7 |
| 1993 | 34.3°C | 27.9°C | 21.5°C | 37.7°C | 16.3°C | 74 mm | 62% | 1.1 m/s | 5.5 |
| 1992 | 29.2°C | 23.6°C | 17.9°C | 32.4°C | 11.6°C | 97 mm | 72% | 1.2 m/s | 4.8 |
| 1991 | 30.9°C | 25.3°C | 19.7°C | 34.3°C | 13.8°C | 69 mm | 70% | 1.1 m/s | 5.5 |
| 1990 | 34.3°C | 27.2°C | 20.1°C | 39.6°C | 13.5°C | 42 mm | 58% | 1.2 m/s | 5.7 |
| 1989 | 29.1°C | 24.1°C | 19.2°C | 31.9°C | 10.5°C | 71 mm | 79% | 1.1 m/s | 5.5 |
| 1988 | 34.6°C | 27.9°C | 21.2°C | 39.7°C | 12.1°C | 84 mm | 60% | 1.2 m/s | 5.5 |
| 1987 | 34.7°C | 27.9°C | 21.2°C | 38.8°C | 15.3°C | 54 mm | 58% | 1.3 m/s | 5.3 |
| 1986 | 31.7°C | 25.4°C | 19.0°C | 36.0°C | 9.2°C | 93 mm | 64% | 1.5 m/s | 5.1 |
| 1985 | 30.9°C | 25.2°C | 19.5°C | 36.3°C | 15.6°C | 143 mm | 71% | 1.4 m/s | 5 |
| 1984 | 30.5°C | 24.9°C | 19.2°C | 33.7°C | 13.2°C | 84 mm | 73% | 1.2 m/s | 5 |
| 1983 | 34.9°C | 28.4°C | 21.9°C | 39.0°C | 15.0°C | 59 mm | 61% | 1 m/s | — |
| 1982 | 30.7°C | 24.6°C | 18.6°C | 35.4°C | 13.3°C | 144 mm | 72% | 1.2 m/s | — |
| 1981 | 32.0°C | 25.8°C | 19.7°C | 36.1°C | 15.9°C | 102 mm | 67% | 1.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 32.2°C with lows near 20.2°C (mean 26.2°C), based on 45 years of NASA POWER data.
August averages 92 mm of rainfall in Brentwood, one of the drier months. The wettest on record was 214 mm in 2021.
The hottest August reached 42.1°C in 2007. The coldest dipped to 9.2°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.4°C. Daytime highs moved from 31.8°C to 32.3°C and overnight lows from 19.8°C to 20.1°C over the same span.
August is one of the warmer months of the year in Brentwood and one of the drier months, so plan for around 32.2°C daytime highs and 20.2°C at night.
Not quite — August is the 11th coolest month in Brentwood, averaging 26.2°C.
For August in Brentwood, pack light, breathable clothing and sun protection, with typical highs of 32.2°C and lows of 20.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 68% — moderately humid.
Average wind speed in August is 1.2 m/s. The windiest August on record averaged 1.5 m/s (1986).
The wettest August on record was 2021 with 214 mm. On average, August sees 92 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 Brentwood behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
