August is one of the cooler months of the year in Caloundra, with average highs near 20.3°C and lows around 14.1°C (mean 17.2°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 Caloundra. Across 45 years of records, the warmest August in Caloundra was 2024 — when the month averaged 19.8°C — while the coldest was 1990 at 15°C. Typical August days reach 20.3°C with nights near 14.1°C. The long-term trend is warming, about 0.4°C per decade.
August is one of the drier months in Caloundra, averaging 51 mm of rainfall. The wettest August on record was 2007 with 217 mm, while the driest was 2012 at 1 mm.
Relative humidity in Caloundra during August averages 69%. The most humid August was 1999 at 79%, and the least humid was 2018 at 58%.
August receives about 4.4 kWh/m²/day of solar energy in Caloundra. The sunniest August was 2013 at 5 kWh/m²/day, and the cloudiest were 1998, 2002 and 2010 at 4.
Average wind speed in Caloundra during August is 3 m/s. The windiest Augusts were 2002 and 2014 at 3.7 m/s, while the calmest were 2009 and 2022 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.4°C | 17.0°C | 17.5°C | 17.5°C | 18.1°C | +1.7°C |
| Avg High | 19.3°C | 19.9°C | 20.7°C | 20.8°C | 21.2°C | +1.9°C |
| Avg Low | 13.5°C | 14.1°C | 14.3°C | 14.2°C | 15.0°C | +1.5°C |
| Avg Rain | 65 mm | 44 mm | 57 mm | 51 mm | 32 mm | -33 mm |
August temperatures in Caloundra have risen by about 1.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 8°C (1989) to a record high of 29.5°C (2024).
Rainfall in August is one of the drier months, averaging 51 mm, with a wettest year of 217 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Caloundra
August is a good time to visit Caloundra, with days averaging 20.3°C and nights around 14.1°C (mean 17.2°C, cooler than Caloundra's yearly average) and moderate rainfall. October and April 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 | 20.2°C | 17.3°C | 14.4°C | 24.0°C | 9.9°C | 57 mm | 73% | 3 m/s | 4.1 |
| 2024 🔥 | 22.8°C | 19.8°C | 16.9°C | 29.5°C | 12.0°C | 64 mm | 74% | 3 m/s | 4.3 |
| 2023 | 22.2°C | 19.3°C | 16.3°C | 26.1°C | 12.9°C | 28 mm | 69% | 3 m/s | 4.5 |
| 2022 | 19.4°C | 16.5°C | 13.5°C | 22.0°C | 9.8°C | 16 mm | 75% | 2.6 m/s | 4.3 |
| 2021 | 21.7°C | 18.2°C | 14.7°C | 24.8°C | 11.0°C | 8 mm | 67% | 2.7 m/s | 4.6 |
| 2020 | 21.1°C | 17.5°C | 13.9°C | 24.5°C | 10.6°C | 20 mm | 65% | 2.9 m/s | 4.7 |
| 2019 | 21.3°C | 17.9°C | 14.6°C | 24.6°C | 10.5°C | 12 mm | 65% | 2.7 m/s | 4.7 |
| 2018 | 21.7°C | 17.7°C | 13.7°C | 25.0°C | 10.1°C | 10 mm | 58% | 2.8 m/s | 4.9 |
| 2017 | 22.5°C | 18.6°C | 14.7°C | 27.9°C | 11.5°C | 5 mm | 62% | 2.9 m/s | 4.8 |
| 2016 | 20.6°C | 17.7°C | 14.7°C | 23.6°C | 11.3°C | 48 mm | 71% | 3.1 m/s | 4.4 |
| 2015 | 21.0°C | 17.6°C | 14.2°C | 24.5°C | 9.3°C | 92 mm | 71% | 2.7 m/s | 4.4 |
| 2014 | 20.0°C | 17.3°C | 14.7°C | 24.2°C | 13.1°C | 145 mm | 72% | 3.7 m/s | 4.1 |
| 2013 | 21.3°C | 17.7°C | 14.1°C | 24.4°C | 9.9°C | 2 mm | 69% | 2.7 m/s | 5 |
| 2012 | 19.7°C | 16.4°C | 13.1°C | 22.7°C | 10.4°C | 1 mm | 68% | 2.8 m/s | 4.8 |
| 2011 | 20.1°C | 17.3°C | 14.6°C | 22.0°C | 11.1°C | 98 mm | 72% | 3.1 m/s | 4.1 |
| 2010 | 20.1°C | 16.9°C | 13.6°C | 23.5°C | 10.5°C | 95 mm | 68% | 3.2 m/s | 4 |
| 2009 | 22.0°C | 18.6°C | 15.2°C | 27.0°C | 12.5°C | 10 mm | 71% | 2.6 m/s | 4.8 |
| 2008 | 18.8°C | 15.6°C | 12.5°C | 22.3°C | 8.1°C | 7 mm | 67% | 2.9 m/s | 4.7 |
| 2007 🌧️ | 20.5°C | 17.6°C | 14.7°C | 24.2°C | 10.7°C | 217 mm | 73% | 3.3 m/s | 4.1 |
| 2006 | 21.1°C | 17.8°C | 14.5°C | 26.2°C | 11.5°C | 56 mm | 68% | 3 m/s | 4.6 |
| 2005 | 20.3°C | 17.5°C | 14.7°C | 22.9°C | 9.4°C | 25 mm | 68% | 3.4 m/s | 4.3 |
| 2004 | 21.6°C | 17.7°C | 13.9°C | 24.7°C | 10.7°C | 20 mm | 61% | 3.3 m/s | 4.8 |
| 2003 | 20.7°C | 17.6°C | 14.6°C | 25.0°C | 8.9°C | 52 mm | 71% | 3.3 m/s | 4.1 |
| 2002 | 20.4°C | 17.5°C | 14.7°C | 23.8°C | 11.2°C | 130 mm | 69% | 3.7 m/s | 4 |
| 2001 | 20.9°C | 17.3°C | 13.8°C | 24.0°C | 10.9°C | 16 mm | 60% | 3 m/s | 4.9 |
| 2000 | 20.7°C | 17.4°C | 14.0°C | 24.5°C | 10.3°C | 35 mm | 65% | 3.2 m/s | 4.6 |
| 1999 | 18.6°C | 16.5°C | 14.4°C | 20.6°C | 9.7°C | 94 mm | 79% | 3.2 m/s | 4.2 |
| 1998 | 20.7°C | 18.4°C | 16.1°C | 22.9°C | 9.8°C | 109 mm | 77% | 3.6 m/s | 4 |
| 1997 | 20.0°C | 17.1°C | 14.2°C | 23.3°C | 9.6°C | 20 mm | 67% | 3 m/s | 4.4 |
| 1996 | 20.0°C | 16.9°C | 13.8°C | 23.9°C | 9.1°C | 29 mm | 72% | 2.9 m/s | 4.4 |
| 1995 | 20.5°C | 17.5°C | 14.6°C | 25.4°C | 8.8°C | 39 mm | 67% | 3.1 m/s | 4.4 |
| 1994 | 19.5°C | 16.6°C | 13.8°C | 22.9°C | 8.9°C | 35 mm | 68% | 3 m/s | 4.4 |
| 1993 | 20.7°C | 17.7°C | 14.8°C | 24.5°C | 9.4°C | 78 mm | 69% | 3 m/s | 4.3 |
| 1992 | 19.6°C | 16.4°C | 13.2°C | 23.1°C | 9.6°C | 24 mm | 69% | 3.2 m/s | 4.4 |
| 1991 | 21.5°C | 17.8°C | 14.0°C | 24.9°C | 10.2°C | 3 mm | 61% | 3.1 m/s | 4.7 |
| 1990 ❄️ | 18.4°C | 15.0°C | 11.7°C | 21.9°C | 8.8°C | 12 mm | 68% | 3.5 m/s | 4.6 |
| 1989 | 17.9°C | 15.1°C | 12.2°C | 21.6°C | 8.0°C | 69 mm | 72% | 3 m/s | 4.6 |
| 1988 | 19.2°C | 16.8°C | 14.4°C | 22.3°C | 8.5°C | 92 mm | 78% | 3.3 m/s | 4.2 |
| 1987 | 20.0°C | 17.3°C | 14.6°C | 21.9°C | 10.9°C | 88 mm | 73% | 3.1 m/s | 4.3 |
| 1986 | 19.2°C | 16.2°C | 13.3°C | 22.4°C | 11.0°C | 78 mm | 69% | 2.9 m/s | 4.1 |
| 1985 | 19.1°C | 16.3°C | 13.5°C | 23.9°C | 8.9°C | 56 mm | 72% | 2.7 m/s | 4.2 |
| 1984 | 19.3°C | 15.8°C | 12.3°C | 21.8°C | 8.9°C | 26 mm | 70% | 2.8 m/s | 4.6 |
| 1983 | 18.6°C | 16.2°C | 13.8°C | 20.6°C | 9.4°C | 70 mm | 74% | 3 m/s | — |
| 1982 | 19.7°C | 17.3°C | 14.9°C | 22.5°C | 9.7°C | 68 mm | 70% | 3 m/s | — |
| 1981 | 20.5°C | 16.5°C | 12.5°C | 24.4°C | 9.7°C | 44 mm | 61% | 3.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 20.3°C with lows near 14.1°C (mean 17.2°C), based on 45 years of NASA POWER data.
August averages 51 mm of rainfall in Caloundra, one of the drier months. The wettest on record was 217 mm in 2007.
The hottest August reached 29.5°C in 2024. The coldest dipped to 8°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.8°C. Daytime highs moved from 19.4°C to 21.3°C and overnight lows from 13.4°C to 15.2°C over the same span.
August is one of the cooler months of the year in Caloundra and one of the drier months, so plan for around 20.3°C daytime highs and 14.1°C at night.
Not quite — August is the 2nd coolest month in Caloundra, averaging 17.2°C.
For August in Caloundra, pack light layers you can adjust through the day, with typical highs of 20.3°C and lows of 14.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 69% — moderately humid.
Average wind speed in August is 3 m/s. The windiest August on record averaged 3.7 m/s (2002).
The wettest August on record was 2007 with 217 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 Caloundra 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.
