August is one of the cooler months of the year in Port Douglas, with average highs near 24.6°C and lows around 19.8°C (mean 22.2°C). It is one of the drier months, averaging 34 mm of rainfall and 75% relative humidity across the period.
August is one of the cooler months of the year in Port Douglas. Across 45 years of records, the warmest August in Port Douglas was 1998 — when the month averaged 23.5°C — while the coldest was 1982 at 20.5°C. Typical August days reach 24.6°C with nights near 19.8°C. The long-term trend is warming, about 0.2°C per decade.
August is one of the drier months in Port Douglas, averaging 34 mm of rainfall. The wettest August on record was 1995 with 161 mm, while the driest was 2018 at 0 mm.
Relative humidity in Port Douglas during August averages 75%. The most humid August was 1995 at 82%, and the least humid was 1990 at 68%.
August receives about 5 kWh/m²/day of solar energy in Port Douglas. The sunniest Augusts were 1990 and 2004 at 5.6 kWh/m²/day, and the cloudiest was 1995 at 4.
Average wind speed in Port Douglas during August is 2.9 m/s. The windiest August was 1982 at 3.8 m/s, while the calmest was 1981 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.0°C | 21.8°C | 22.0°C | 22.4°C | 22.9°C | +0.9°C |
| Avg High | 24.3°C | 24.2°C | 24.4°C | 24.9°C | 25.4°C | +1.1°C |
| Avg Low | 19.6°C | 19.5°C | 19.6°C | 19.9°C | 20.4°C | +0.8°C |
| Avg Rain | 36 mm | 50 mm | 28 mm | 27 mm | 29 mm | -7 mm |
August temperatures in Port Douglas have risen by about 0.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 14°C (1990) to a record high of 31.2°C (2020).
Rainfall in August is one of the drier months, averaging 34 mm, with a wettest year of 161 mm.
One of the best times to visit Port Douglas
August is one of the best times to visit Port Douglas. Expect days averaging 24.6°C and nights around 19.8°C (mean 22.2°C) — cooler than Port Douglas's yearly average — with moderate rainfall (34 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 | 25.6°C | 22.9°C | 20.2°C | 29.4°C | 16.4°C | 5 mm | 72% | 2.8 m/s | 5.3 |
| 2024 | 25.5°C | 23.0°C | 20.6°C | 27.7°C | 18.8°C | 29 mm | 77% | 2.9 m/s | 5.1 |
| 2023 | 24.9°C | 22.5°C | 20.1°C | 26.7°C | 18.6°C | 66 mm | 72% | 3.3 m/s | 4.9 |
| 2022 | 25.2°C | 22.9°C | 20.5°C | 28.0°C | 17.9°C | 26 mm | 77% | 3 m/s | 4.8 |
| 2021 | 25.3°C | 23.1°C | 20.9°C | 27.0°C | 18.3°C | 36 mm | 78% | 3 m/s | 4.7 |
| 2020 | 25.9°C | 23.1°C | 20.3°C | 31.2°C | 19.2°C | 10 mm | 71% | 2.7 m/s | 5 |
| 2019 | 24.7°C | 22.1°C | 19.5°C | 27.6°C | 17.2°C | 12 mm | 73% | 2.9 m/s | 5.2 |
| 2018 | 25.3°C | 22.6°C | 19.9°C | 27.2°C | 17.9°C | 0 mm | 70% | 2.5 m/s | 5.4 |
| 2017 | 25.6°C | 23.2°C | 20.8°C | 27.9°C | 19.8°C | 6 mm | 72% | 2.7 m/s | 5.4 |
| 2016 | 24.7°C | 22.5°C | 20.2°C | 28.7°C | 17.4°C | 40 mm | 76% | 3 m/s | 4.7 |
| 2015 | 24.7°C | 22.3°C | 19.8°C | 26.7°C | 17.2°C | 18 mm | 73% | 2.6 m/s | 5.4 |
| 2014 | 24.4°C | 22.0°C | 19.5°C | 26.3°C | 17.7°C | 38 mm | 75% | 3 m/s | 5 |
| 2013 | 25.1°C | 22.5°C | 19.8°C | 27.3°C | 18.2°C | 13 mm | 73% | 2.6 m/s | 5.5 |
| 2012 | 24.1°C | 21.6°C | 19.1°C | 26.4°C | 15.0°C | 19 mm | 75% | 2.7 m/s | 5.2 |
| 2011 | 24.4°C | 21.8°C | 19.1°C | 27.2°C | 16.7°C | 27 mm | 73% | 2.8 m/s | 5.1 |
| 2010 | 25.6°C | 23.3°C | 21.1°C | 27.5°C | 17.9°C | 96 mm | 78% | 2.8 m/s | 4.4 |
| 2009 | 25.4°C | 22.9°C | 20.5°C | 27.0°C | 18.4°C | 9 mm | 73% | 2.8 m/s | 5.4 |
| 2008 | 24.1°C | 21.7°C | 19.4°C | 25.8°C | 17.3°C | 5 mm | 74% | 3.3 m/s | 4.9 |
| 2007 | 24.2°C | 22.1°C | 19.9°C | 26.1°C | 17.7°C | 21 mm | 77% | 3.1 m/s | 4.5 |
| 2006 | 23.3°C | 21.0°C | 18.7°C | 25.0°C | 16.4°C | 19 mm | 74% | 3.2 m/s | 5.3 |
| 2005 | 23.5°C | 21.6°C | 19.7°C | 24.6°C | 16.4°C | 90 mm | 76% | 3.2 m/s | 4.6 |
| 2004 | 24.7°C | 22.0°C | 19.4°C | 26.8°C | 17.7°C | 3 mm | 68% | 2.3 m/s | 5.6 |
| 2003 | 24.4°C | 22.3°C | 20.1°C | 26.3°C | 17.4°C | 24 mm | 75% | 2.8 m/s | 4.7 |
| 2002 | 24.4°C | 22.0°C | 19.6°C | 27.2°C | 18.5°C | 49 mm | 75% | 2.9 m/s | 4.7 |
| 2001 | 24.9°C | 22.4°C | 19.8°C | 28.1°C | 18.5°C | 14 mm | 71% | 2.7 m/s | 5.2 |
| 2000 | 24.6°C | 21.9°C | 19.3°C | 29.1°C | 16.8°C | 47 mm | 76% | 2.6 m/s | 5.3 |
| 1999 | 23.5°C | 21.2°C | 19.0°C | 25.8°C | 16.9°C | 61 mm | 78% | 3.1 m/s | 4.8 |
| 1998 🔥 | 25.9°C | 23.5°C | 21.1°C | 29.3°C | 17.6°C | 67 mm | 75% | 2.7 m/s | 5.1 |
| 1997 | 23.8°C | 21.4°C | 19.1°C | 25.5°C | 16.9°C | 71 mm | 75% | 2.7 m/s | 4.7 |
| 1996 | 24.9°C | 22.5°C | 20.2°C | 27.3°C | 18.1°C | 15 mm | 74% | 2.8 m/s | 4.9 |
| 1995 🌧️ | 22.9°C | 21.1°C | 19.3°C | 25.4°C | 14.8°C | 161 mm | 82% | 3.7 m/s | 4 |
| 1994 | 22.9°C | 20.8°C | 18.7°C | 24.2°C | 16.3°C | 51 mm | 78% | 3.5 m/s | 4.7 |
| 1993 | 23.7°C | 21.6°C | 19.4°C | 25.6°C | 17.4°C | 37 mm | 73% | 2.9 m/s | 4.7 |
| 1992 | 25.0°C | 22.4°C | 19.8°C | 28.5°C | 18.4°C | 26 mm | 77% | 2.5 m/s | 5 |
| 1991 | 24.7°C | 22.1°C | 19.6°C | 27.8°C | 18.1°C | 9 mm | 74% | 2.8 m/s | 4.8 |
| 1990 | 24.2°C | 21.3°C | 18.5°C | 27.0°C | 14.0°C | 1 mm | 68% | 2.3 m/s | 5.6 |
| 1989 | 23.8°C | 21.4°C | 19.1°C | 27.4°C | 14.6°C | 5 mm | 77% | 2.6 m/s | 4.9 |
| 1988 | 24.3°C | 22.3°C | 20.3°C | 27.6°C | 19.0°C | 55 mm | 81% | 3.3 m/s | 4.4 |
| 1987 | 24.0°C | 21.7°C | 19.3°C | 26.8°C | 17.7°C | 61 mm | 80% | 2.6 m/s | 4.9 |
| 1986 | 25.1°C | 22.7°C | 20.2°C | 27.5°C | 17.1°C | 29 mm | 75% | 2.4 m/s | 4.7 |
| 1985 | 24.7°C | 22.2°C | 19.8°C | 26.7°C | 17.1°C | 10 mm | 75% | 2.8 m/s | 5.3 |
| 1984 | 25.0°C | 22.4°C | 19.7°C | 28.8°C | 17.1°C | 4 mm | 74% | 2.4 m/s | 5.1 |
| 1983 | 23.6°C | 21.6°C | 19.7°C | 25.6°C | 17.4°C | 51 mm | 80% | 3.1 m/s | — |
| 1982 ❄️ | 22.4°C | 20.5°C | 18.5°C | 23.9°C | 17.5°C | 103 mm | 78% | 3.8 m/s | — |
| 1981 | 25.9°C | 23.1°C | 20.2°C | 28.2°C | 18.4°C | 2 mm | 74% | 2.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 24.6°C with lows near 19.8°C (mean 22.2°C), based on 45 years of NASA POWER data.
August averages 34 mm of rainfall in Port Douglas, one of the drier months. The wettest on record was 161 mm in 1995.
The hottest August reached 31.2°C in 2020. The coldest dipped to 14°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.9°C. Daytime highs moved from 24.3°C to 25.3°C and overnight lows from 19.6°C to 20.5°C over the same span.
August is one of the cooler months of the year in Port Douglas and one of the drier months, so plan for around 24.6°C daytime highs and 19.8°C at night.
Not quite — August is the 3rd coolest month in Port Douglas, averaging 22.2°C.
For August in Port Douglas, pack light layers you can adjust through the day, with typical highs of 24.6°C and lows of 19.8°C.
Relative humidity in August averages 75% — moderately humid.
Average wind speed in August is 2.9 m/s. The windiest August on record averaged 3.8 m/s (1982).
The wettest August on record was 1995 with 161 mm. On average, August sees 34 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 Port Douglas 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.
