August is one of the cooler months of the year in Byron Bay, with average highs near 19.5°C and lows around 16.3°C (mean 17.9°C). It is one of the drier months, averaging 51 mm of rainfall and 69% relative humidity across the period.
August is one of the cooler months of the year in Byron Bay. Across 45 years of records, the warmest August in Byron Bay was 2024 — when the month averaged 20.1°C — while the coldest were 1989 and 1990 at 16.2°C. Typical August days reach 19.5°C with nights near 16.3°C. The long-term trend is warming, about 0.4°C per decade.
August is one of the drier months in Byron Bay, averaging 51 mm of rainfall. The wettest August on record was 2014 with 175 mm, while the driest was 1991 at 1 mm.
Relative humidity in Byron Bay during August averages 69%. The most humid August was 2024 at 76%, and the least humid was 2018 at 63%.
August receives about 4.2 kWh/m²/day of solar energy in Byron Bay. The sunniest Augusts were 2013, 2017 and 2018 at 4.7 kWh/m²/day, and the cloudiest were 1998, 2007 and 2014 at 3.7.
Average wind speed in Byron Bay during August is 5.2 m/s. The windiest August was 2014 at 6.2 m/s, while the calmest was 1982 at 4.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.2°C | 17.7°C | 18.1°C | 18.2°C | 18.7°C | +1.5°C |
| Avg High | 18.8°C | 19.3°C | 19.7°C | 19.9°C | 20.3°C | +1.5°C |
| Avg Low | 15.6°C | 16.1°C | 16.5°C | 16.6°C | 17.2°C | +1.6°C |
| Avg Rain | 65 mm | 37 mm | 52 mm | 54 mm | 45 mm | -20 mm |
August temperatures in Byron Bay have risen by about 1.7°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 11°C (1988) to a record high of 26.7°C (2024).
Rainfall in August is one of the drier months, averaging 51 mm, with a wettest year of 175 mm.
A good time to visit Byron Bay
August is a good time to visit Byron Bay, with days averaging 19.5°C and nights around 16.3°C (mean 17.9°C, cooler than Byron Bay's yearly average) and moderate rainfall. November and October are marginally more temperate, but August still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.6°C | 18.3°C | 17.0°C | 23.0°C | 12.6°C | 99 mm | 72% | 5.7 m/s | 4 |
| 2024 🔥 | 21.4°C | 20.1°C | 18.7°C | 26.7°C | 14.9°C | 101 mm | 76% | 5.4 m/s | 3.9 |
| 2023 | 20.9°C | 19.6°C | 18.3°C | 24.4°C | 15.4°C | 18 mm | 71% | 4.9 m/s | 4 |
| 2022 | 19.2°C | 17.7°C | 16.3°C | 22.1°C | 12.0°C | 16 mm | 72% | 5 m/s | 3.9 |
| 2021 | 20.3°C | 18.6°C | 16.8°C | 22.6°C | 13.2°C | 9 mm | 70% | 4.6 m/s | 4.3 |
| 2020 | 20.1°C | 18.1°C | 16.2°C | 23.4°C | 12.5°C | 26 mm | 67% | 5.2 m/s | 4.4 |
| 2019 | 20.2°C | 18.4°C | 16.7°C | 23.8°C | 11.4°C | 15 mm | 67% | 4.9 m/s | 4.4 |
| 2018 | 20.1°C | 18.2°C | 16.4°C | 23.2°C | 12.7°C | 27 mm | 63% | 4.9 m/s | 4.7 |
| 2017 | 20.6°C | 18.8°C | 16.9°C | 25.2°C | 14.0°C | 4 mm | 67% | 5.2 m/s | 4.7 |
| 2016 | 20.0°C | 18.6°C | 17.2°C | 22.3°C | 14.5°C | 87 mm | 71% | 5.3 m/s | 3.9 |
| 2015 | 20.0°C | 18.3°C | 16.6°C | 23.7°C | 12.3°C | 24 mm | 70% | 4.9 m/s | 4.2 |
| 2014 🌧️ | 19.0°C | 17.8°C | 16.5°C | 23.2°C | 13.8°C | 175 mm | 74% | 6.2 m/s | 3.7 |
| 2013 | 20.7°C | 18.9°C | 17.2°C | 23.6°C | 12.7°C | 5 mm | 66% | 4.9 m/s | 4.7 |
| 2012 | 19.4°C | 17.6°C | 15.7°C | 22.5°C | 12.1°C | 3 mm | 67% | 5.2 m/s | 4.5 |
| 2011 | 19.0°C | 17.7°C | 16.4°C | 21.4°C | 13.6°C | 134 mm | 72% | 5.1 m/s | 3.9 |
| 2010 | 19.6°C | 17.8°C | 16.1°C | 23.2°C | 12.7°C | 63 mm | 69% | 5.7 m/s | 4.1 |
| 2009 | 20.8°C | 19.2°C | 17.7°C | 25.2°C | 15.3°C | 3 mm | 71% | 4.5 m/s | 4.6 |
| 2008 | 18.5°C | 16.7°C | 14.9°C | 22.4°C | 11.7°C | 23 mm | 66% | 5.1 m/s | 4.4 |
| 2007 | 20.0°C | 18.5°C | 17.0°C | 22.8°C | 13.1°C | 131 mm | 71% | 5.8 m/s | 3.7 |
| 2006 | 19.7°C | 18.3°C | 16.9°C | 24.1°C | 13.9°C | 104 mm | 72% | 5.6 m/s | 4.1 |
| 2005 | 19.5°C | 18.1°C | 16.8°C | 22.0°C | 14.0°C | 26 mm | 68% | 5.6 m/s | 4 |
| 2004 | 20.1°C | 18.3°C | 16.4°C | 22.9°C | 13.2°C | 37 mm | 65% | 5.6 m/s | 4.5 |
| 2003 | 19.7°C | 18.3°C | 16.9°C | 23.0°C | 13.3°C | 24 mm | 72% | 5.9 m/s | 3.9 |
| 2002 | 19.5°C | 18.1°C | 16.7°C | 22.8°C | 14.6°C | 118 mm | 71% | 6 m/s | 3.8 |
| 2001 | 19.6°C | 17.7°C | 15.8°C | 22.7°C | 13.0°C | 17 mm | 65% | 5.2 m/s | 4.4 |
| 2000 | 19.5°C | 17.8°C | 16.2°C | 22.6°C | 13.2°C | 34 mm | 66% | 5.4 m/s | 4.2 |
| 1999 | 18.7°C | 17.5°C | 16.3°C | 21.7°C | 11.4°C | 92 mm | 74% | 5.4 m/s | 3.9 |
| 1998 | 19.8°C | 18.6°C | 17.4°C | 22.1°C | 14.4°C | 101 mm | 76% | 5.8 m/s | 3.7 |
| 1997 | 19.1°C | 17.7°C | 16.3°C | 22.0°C | 11.2°C | 14 mm | 67% | 5.1 m/s | 4.4 |
| 1996 | 19.9°C | 18.0°C | 16.2°C | 22.8°C | 11.7°C | 45 mm | 71% | 5.1 m/s | 4.1 |
| 1995 | 19.5°C | 18.1°C | 16.6°C | 23.9°C | 12.5°C | 33 mm | 70% | 5.3 m/s | 4.2 |
| 1994 | 18.4°C | 17.0°C | 15.7°C | 21.4°C | 11.5°C | 19 mm | 70% | 4.6 m/s | 4.3 |
| 1993 | 19.5°C | 18.1°C | 16.7°C | 23.3°C | 12.4°C | 41 mm | 70% | 4.8 m/s | 4.3 |
| 1992 | 19.4°C | 17.5°C | 15.5°C | 22.7°C | 12.6°C | 14 mm | 68% | 5.6 m/s | 4.4 |
| 1991 | 19.8°C | 17.8°C | 15.8°C | 23.2°C | 11.7°C | 1 mm | 65% | 5.6 m/s | 4.5 |
| 1990 | 18.4°C | 16.2°C | 14.0°C | 22.0°C | 11.3°C | 12 mm | 67% | 6 m/s | 4.3 |
| 1989 ❄️ | 17.9°C | 16.2°C | 14.5°C | 22.6°C | 11.2°C | 45 mm | 68% | 5 m/s | 4.5 |
| 1988 | 19.1°C | 17.7°C | 16.2°C | 21.7°C | 11.0°C | 70 mm | 75% | 5.5 m/s | 4 |
| 1987 | 19.5°C | 18.2°C | 16.8°C | 20.9°C | 14.1°C | 126 mm | 73% | 5.1 m/s | 3.9 |
| 1986 | 18.5°C | 17.0°C | 15.5°C | 21.5°C | 12.6°C | 83 mm | 69% | 5.1 m/s | 3.9 |
| 1985 | 18.4°C | 16.9°C | 15.4°C | 23.3°C | 12.1°C | 41 mm | 71% | 4.8 m/s | 3.9 |
| 1984 | 18.9°C | 16.9°C | 14.9°C | 21.4°C | 11.4°C | 16 mm | 67% | 4.7 m/s | 4.3 |
| 1983 | 18.6°C | 17.3°C | 16.0°C | 20.8°C | 12.8°C | 79 mm | 69% | 4.8 m/s | — |
| 1982 | 18.9°C | 17.8°C | 16.7°C | 20.9°C | 12.9°C | 83 mm | 69% | 4.2 m/s | — |
| 1981 | 19.2°C | 17.0°C | 14.7°C | 23.4°C | 12.1°C | 37 mm | 64% | 5.4 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 19.5°C with lows near 16.3°C (mean 17.9°C), based on 45 years of NASA POWER data.
August averages 51 mm of rainfall in Byron Bay, one of the drier months. The wettest on record was 175 mm in 2014.
The hottest August reached 26.7°C in 2024. The coldest dipped to 11°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.7°C. Daytime highs moved from 18.8°C to 20.3°C and overnight lows from 15.5°C to 17.4°C over the same span.
August is one of the cooler months of the year in Byron Bay and one of the drier months, so plan for around 19.5°C daytime highs and 16.3°C at night.
Not quite — August is the 2nd coolest month in Byron Bay, averaging 17.9°C.
For August in Byron Bay, pack light layers you can adjust through the day, with typical highs of 19.5°C and lows of 16.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 69% — moderately humid.
Average wind speed in August is 5.2 m/s. The windiest August on record averaged 6.2 m/s (2014).
The wettest August on record was 2014 with 175 mm. On average, August sees 51 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 Byron Bay 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.
