August is one of the cooler months of the year in Mackay, with average highs near 21.9°C and lows around 19.1°C (mean 20.5°C). It is one of the drier months, averaging 30 mm of rainfall and 73% relative humidity across the period.
August is one of the cooler months of the year in Mackay. Across 45 years of records, the warmest August in Mackay was 1998 — when the month averaged 21.7°C — while the coldest was 1989 at 18.9°C. Typical August days reach 21.9°C with nights near 19.1°C. The long-term trend is warming, about 0.2°C per decade.
August is one of the drier months in Mackay, averaging 30 mm of rainfall. The wettest August on record was 1998 with 241 mm, while the driest was 2013 at 1 mm.
Relative humidity in Mackay during August averages 73%. The most humid August was 1988 at 80%, and the least humid was 2004 at 64%.
August receives about 4.9 kWh/m²/day of solar energy in Mackay. The sunniest Augusts were 2004, 2013 and 2018 at 5.4 kWh/m²/day, and the cloudiest were 1988, 1995 and 1998 at 4.3.
Average wind speed in Mackay during August is 3.8 m/s. The windiest August was 1982 at 5.7 m/s, while the calmest was 2012 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.1°C | 20.4°C | 20.5°C | 20.6°C | 20.9°C | +0.8°C |
| Avg High | 21.5°C | 21.8°C | 21.9°C | 21.9°C | 22.3°C | +0.8°C |
| Avg Low | 18.7°C | 19.0°C | 19.1°C | 19.2°C | 19.5°C | +0.8°C |
| Avg Rain | 26 mm | 52 mm | 17 mm | 24 mm | 28 mm | +1 mm |
August temperatures in Mackay have risen by about 0.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 12.7°C (1990) to a record high of 26.1°C (2000).
Rainfall in August is one of the drier months, averaging 30 mm, with a wettest year of 241 mm.
One of the best times to visit Mackay
August is one of the best times to visit Mackay. Expect days averaging 21.9°C and nights around 19.1°C (mean 20.5°C) — cooler than Mackay's yearly average — with low rainfall (30 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 | 22.5°C | 20.8°C | 19.2°C | 26.1°C | 14.3°C | 18 mm | 72% | 3.7 m/s | 5.1 |
| 2024 | 22.6°C | 21.3°C | 19.9°C | 24.5°C | 18.6°C | 39 mm | 79% | 3.5 m/s | 5 |
| 2023 | 22.6°C | 21.3°C | 20.1°C | 24.5°C | 18.2°C | 10 mm | 73% | 4.3 m/s | 5.3 |
| 2022 | 21.4°C | 20.0°C | 18.6°C | 23.6°C | 15.7°C | 7 mm | 76% | 3.7 m/s | 4.9 |
| 2021 | 22.5°C | 21.2°C | 20.0°C | 24.9°C | 16.9°C | 70 mm | 74% | 4.1 m/s | 4.9 |
| 2020 | 22.3°C | 20.8°C | 19.2°C | 25.9°C | 15.9°C | 20 mm | 69% | 3.8 m/s | 5.2 |
| 2019 | 21.7°C | 20.3°C | 18.8°C | 24.7°C | 15.3°C | 7 mm | 71% | 4 m/s | 5.3 |
| 2018 | 22.2°C | 20.8°C | 19.3°C | 24.4°C | 16.8°C | 1 mm | 66% | 3.4 m/s | 5.4 |
| 2017 | 23.0°C | 21.6°C | 20.3°C | 24.7°C | 17.2°C | 5 mm | 71% | 3.2 m/s | 5.2 |
| 2016 | 22.0°C | 20.8°C | 19.6°C | 24.9°C | 14.6°C | 47 mm | 75% | 4.4 m/s | 4.7 |
| 2015 | 22.2°C | 20.9°C | 19.5°C | 24.2°C | 15.7°C | 7 mm | 72% | 3.3 m/s | 5.2 |
| 2014 | 21.5°C | 20.2°C | 18.9°C | 22.8°C | 16.3°C | 55 mm | 73% | 4.4 m/s | 5 |
| 2013 | 22.5°C | 21.1°C | 19.7°C | 25.2°C | 17.4°C | 1 mm | 70% | 3 m/s | 5.4 |
| 2012 | 20.7°C | 19.3°C | 18.0°C | 23.0°C | 12.8°C | 12 mm | 75% | 2.8 m/s | 5.1 |
| 2011 | 21.4°C | 20.0°C | 18.6°C | 23.7°C | 15.8°C | 34 mm | 76% | 3.9 m/s | 4.5 |
| 2010 | 22.0°C | 20.6°C | 19.2°C | 25.4°C | 15.1°C | 69 mm | 74% | 3.5 m/s | 4.4 |
| 2009 | 23.0°C | 21.6°C | 20.2°C | 25.3°C | 18.4°C | 3 mm | 75% | 3.5 m/s | 5.2 |
| 2008 | 20.5°C | 19.1°C | 17.7°C | 22.4°C | 15.0°C | 4 mm | 70% | 3.7 m/s | 5 |
| 2007 | 21.5°C | 20.2°C | 18.9°C | 22.7°C | 15.9°C | 11 mm | 77% | 3.9 m/s | 4.5 |
| 2006 | 21.9°C | 20.4°C | 19.0°C | 23.7°C | 15.7°C | 21 mm | 71% | 3.9 m/s | 5.1 |
| 2005 | 21.7°C | 20.6°C | 19.4°C | 22.9°C | 14.4°C | 58 mm | 73% | 4.7 m/s | 4.4 |
| 2004 | 22.4°C | 20.8°C | 19.1°C | 24.6°C | 16.9°C | 9 mm | 64% | 3.3 m/s | 5.4 |
| 2003 | 22.0°C | 20.8°C | 19.6°C | 24.2°C | 15.1°C | 12 mm | 75% | 3.5 m/s | 4.9 |
| 2002 | 21.8°C | 20.5°C | 19.2°C | 22.8°C | 15.9°C | 25 mm | 72% | 4.1 m/s | 4.8 |
| 2001 | 22.5°C | 20.9°C | 19.2°C | 24.0°C | 16.0°C | 7 mm | 67% | 3.7 m/s | 5.2 |
| 2000 | 21.7°C | 20.2°C | 18.7°C | 26.1°C | 16.3°C | 24 mm | 75% | 3.9 m/s | 4.9 |
| 1999 | 21.0°C | 19.9°C | 18.8°C | 22.1°C | 15.8°C | 22 mm | 77% | 4.4 m/s | 4.8 |
| 1998 🔥 🌧️ | 22.9°C | 21.7°C | 20.4°C | 24.2°C | 13.9°C | 241 mm | 80% | 3.9 m/s | 4.3 |
| 1997 | 21.2°C | 20.0°C | 18.8°C | 22.9°C | 16.2°C | 38 mm | 74% | 4 m/s | 4.7 |
| 1996 | 22.4°C | 20.8°C | 19.3°C | 24.7°C | 14.4°C | 13 mm | 72% | 3.9 m/s | 4.9 |
| 1995 | 21.1°C | 20.0°C | 19.0°C | 22.9°C | 12.9°C | 132 mm | 76% | 5.3 m/s | 4.3 |
| 1994 | 20.9°C | 19.7°C | 18.4°C | 23.2°C | 14.0°C | 6 mm | 71% | 4.7 m/s | 4.9 |
| 1993 | 22.1°C | 20.9°C | 19.6°C | 23.1°C | 15.9°C | 45 mm | 69% | 4 m/s | 5 |
| 1992 | 22.1°C | 20.6°C | 19.1°C | 25.8°C | 16.2°C | 10 mm | 73% | 3.7 m/s | 4.8 |
| 1991 | 22.7°C | 21.3°C | 19.8°C | 25.1°C | 17.4°C | 7 mm | 69% | 3.7 m/s | 5 |
| 1990 | 21.2°C | 19.2°C | 17.2°C | 25.1°C | 12.7°C | 9 mm | 66% | 3.4 m/s | 5.3 |
| 1989 ❄️ | 20.4°C | 18.9°C | 17.5°C | 24.1°C | 13.7°C | 8 mm | 75% | 3.4 m/s | 4.9 |
| 1988 | 21.0°C | 19.8°C | 18.6°C | 22.7°C | 15.1°C | 106 mm | 80% | 4.4 m/s | 4.3 |
| 1987 | 21.9°C | 20.3°C | 18.8°C | 24.8°C | 16.1°C | 21 mm | 75% | 3.7 m/s | 4.9 |
| 1986 | 21.9°C | 20.3°C | 18.7°C | 24.4°C | 13.6°C | 50 mm | 71% | 3.5 m/s | 4.6 |
| 1985 | 21.7°C | 20.3°C | 18.8°C | 24.8°C | 14.9°C | 9 mm | 75% | 3.4 m/s | 5.1 |
| 1984 | 22.0°C | 20.5°C | 19.0°C | 24.1°C | 15.2°C | 3 mm | 70% | 3.4 m/s | 5.1 |
| 1983 | 21.2°C | 19.9°C | 18.6°C | 24.3°C | 15.1°C | 9 mm | 75% | 4.1 m/s | — |
| 1982 | 20.7°C | 19.7°C | 18.7°C | 21.8°C | 15.0°C | 19 mm | 75% | 5.7 m/s | — |
| 1981 | 22.9°C | 21.0°C | 19.2°C | 25.4°C | 17.4°C | 12 mm | 68% | 3.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.9°C with lows near 19.1°C (mean 20.5°C), based on 45 years of NASA POWER data.
August averages 30 mm of rainfall in Mackay, one of the drier months. The wettest on record was 241 mm in 1998.
The hottest August reached 26.1°C in 2000. The coldest dipped to 12.7°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.6°C. Daytime highs moved from 21.7°C to 22.3°C and overnight lows from 18.9°C to 19.6°C over the same span.
August is one of the cooler months of the year in Mackay and one of the drier months, so plan for around 21.9°C daytime highs and 19.1°C at night.
Not quite — August is the 2nd coolest month in Mackay, averaging 20.5°C.
For August in Mackay, pack light layers you can adjust through the day, with typical highs of 21.9°C and lows of 19.1°C.
Relative humidity in August averages 73% — moderately humid.
Average wind speed in August is 3.8 m/s. The windiest August on record averaged 5.7 m/s (1982).
The wettest August on record was 1998 with 241 mm. On average, August sees 30 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 Mackay 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.
