August is close to Adelaide River's year-round average, with average highs near 35.7°C and lows around 19.4°C (mean 27.6°C). It is one of the drier months, averaging 3 mm of rainfall and 41% relative humidity across the period.
August is close to Adelaide River's year-round average. Across 45 years of records, the warmest August in Adelaide River was 1981 — when the month averaged 29.7°C — while the coldest was 2002 at 25.7°C. Typical August days reach 35.7°C with nights near 19.4°C. The long-term August temperature trend is broadly flat.
August is one of the drier months in Adelaide River, averaging 3 mm of rainfall. The wettest August on record was 1996 with 17 mm, while the driest were 2017, 2022 and 2023, among others at 0 mm.
Relative humidity in Adelaide River during August averages 41%. The most humid August was 1996 at 51%, and the least humid was 2014 at 27%.
August receives about 6.2 kWh/m²/day of solar energy in Adelaide River. The sunniest August was 1985 at 6.6 kWh/m²/day, and the cloudiest were 1997 and 2003 at 5.7.
Average wind speed in Adelaide River during August is 2.5 m/s. The windiest Augusts were 1994, 1995 and 2008, among others at 3.2 m/s, while the calmest was 2004 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.1°C | 27.3°C | 27.1°C | 27.2°C | 28.5°C | +0.4°C |
| Avg High | 35.9°C | 35.6°C | 35.4°C | 35.5°C | 36.6°C | +0.7°C |
| Avg Low | 20.2°C | 19.1°C | 18.8°C | 18.9°C | 20.4°C | +0.2°C |
| Avg Rain | 5 mm | 3 mm | 2 mm | 1 mm | 2 mm | -3 mm |
August temperatures in Adelaide River have stayed relatively stable across the record.
August has ranged from a record low of 10.1°C (1990) to a record high of 40.4°C (2024).
Rainfall in August is one of the drier months, averaging 3 mm, with a wettest year of 17 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°C per decade while lows fell 0.1°C per decade, widening the gap between day and night.
One of the best times to visit Adelaide River
August is one of the best times to visit Adelaide River. Expect days averaging 35.7°C and nights around 19.4°C (mean 27.6°C) — close to Adelaide River's yearly average — with low rainfall (3 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 | 35.8°C | 27.4°C | 19.0°C | 39.2°C | 15.1°C | 1 mm | 34% | 2.7 m/s | 6.2 |
| 2024 | 37.3°C | 29.3°C | 21.2°C | 40.4°C | 16.8°C | 0 mm | 44% | 2.3 m/s | 6.3 |
| 2023 | 36.1°C | 28.1°C | 20.2°C | 37.6°C | 18.3°C | 0 mm | 41% | 2.9 m/s | 6.1 |
| 2022 | 36.6°C | 28.5°C | 20.3°C | 38.6°C | 14.9°C | 0 mm | 40% | 2.4 m/s | 6 |
| 2021 | 36.6°C | 28.8°C | 21.0°C | 38.9°C | 15.9°C | 11 mm | 40% | 2.5 m/s | 6.1 |
| 2020 | 36.9°C | 28.7°C | 20.5°C | 39.3°C | 15.4°C | 0 mm | 44% | 2.2 m/s | 6.1 |
| 2019 | 35.2°C | 27.0°C | 18.8°C | 37.6°C | 12.7°C | 0 mm | 37% | 2.5 m/s | 6.2 |
| 2018 | 35.3°C | 27.3°C | 19.4°C | 37.4°C | 15.4°C | 1 mm | 38% | 2.1 m/s | 6.1 |
| 2017 | 36.6°C | 28.2°C | 19.8°C | 39.0°C | 16.2°C | 0 mm | 39% | 2.5 m/s | 6.4 |
| 2016 | 35.6°C | 27.7°C | 19.8°C | 38.7°C | 13.0°C | 1 mm | 40% | 2.5 m/s | 6.1 |
| 2015 | 35.4°C | 27.3°C | 19.1°C | 38.0°C | 14.5°C | 0 mm | 43% | 2.4 m/s | 6.2 |
| 2014 | 34.6°C | 25.8°C | 17.0°C | 37.0°C | 12.9°C | 0 mm | 27% | 3 m/s | 6.5 |
| 2013 | 36.1°C | 27.6°C | 19.1°C | 39.3°C | 14.9°C | 7 mm | 43% | 2.2 m/s | 6.3 |
| 2012 | 35.1°C | 26.2°C | 17.4°C | 38.8°C | 11.8°C | 0 mm | 38% | 2.3 m/s | 6.4 |
| 2011 | 35.0°C | 26.5°C | 18.1°C | 39.2°C | 14.8°C | 1 mm | 37% | 2.7 m/s | 6.2 |
| 2010 | 36.5°C | 28.7°C | 20.9°C | 39.4°C | 16.2°C | 0 mm | 38% | 2.7 m/s | 5.9 |
| 2009 | 36.4°C | 28.0°C | 19.7°C | 38.8°C | 16.1°C | 3 mm | 46% | 2.2 m/s | 6.2 |
| 2008 | 35.5°C | 27.2°C | 19.0°C | 39.3°C | 14.9°C | 0 mm | 34% | 3.2 m/s | 6.1 |
| 2007 | 34.7°C | 26.8°C | 18.9°C | 38.3°C | 14.8°C | 6 mm | 44% | 2.6 m/s | 6 |
| 2006 | 34.5°C | 26.1°C | 17.6°C | 38.4°C | 12.9°C | 0 mm | 41% | 2.9 m/s | 6.5 |
| 2005 | 35.3°C | 27.3°C | 19.3°C | 36.9°C | 15.6°C | 3 mm | 39% | 2.6 m/s | 6.1 |
| 2004 | 35.4°C | 27.0°C | 18.6°C | 37.9°C | 13.9°C | 1 mm | 44% | 1.9 m/s | 6.2 |
| 2003 | 35.8°C | 28.2°C | 20.6°C | 37.8°C | 13.4°C | 2 mm | 48% | 2.2 m/s | 5.7 |
| 2002 ❄️ | 34.9°C | 25.7°C | 16.6°C | 36.9°C | 11.9°C | 0 mm | 31% | 2.5 m/s | 6.3 |
| 2001 | 34.9°C | 26.2°C | 17.5°C | 37.3°C | 13.8°C | 0 mm | 38% | 2.3 m/s | 6.1 |
| 2000 | 36.2°C | 28.2°C | 20.1°C | 38.7°C | 15.5°C | 0 mm | 46% | 2 m/s | 6.2 |
| 1999 | 35.3°C | 27.0°C | 18.6°C | 37.6°C | 13.6°C | 0 mm | 41% | 2.4 m/s | 6.2 |
| 1998 | 36.4°C | 28.3°C | 20.2°C | 39.7°C | 15.5°C | 4 mm | 40% | 2.4 m/s | 6 |
| 1997 | 34.3°C | 26.7°C | 19.1°C | 36.4°C | 14.5°C | 5 mm | 45% | 2.2 m/s | 5.7 |
| 1996 🌧️ | 35.8°C | 28.1°C | 20.4°C | 38.3°C | 15.2°C | 17 mm | 51% | 2.2 m/s | 5.9 |
| 1995 | 35.5°C | 27.3°C | 19.1°C | 39.2°C | 12.6°C | 1 mm | 40% | 3.2 m/s | 6 |
| 1994 | 34.7°C | 25.8°C | 17.0°C | 37.4°C | 12.3°C | 0 mm | 35% | 3.2 m/s | 6.3 |
| 1993 | 35.0°C | 27.5°C | 19.9°C | 37.1°C | 15.0°C | 2 mm | 48% | 2.5 m/s | 6.1 |
| 1992 | 36.6°C | 28.7°C | 20.8°C | 38.5°C | 15.7°C | 1 mm | 46% | 2.3 m/s | 6.2 |
| 1991 | 35.9°C | 27.0°C | 18.2°C | 38.9°C | 14.9°C | 0 mm | 39% | 2.5 m/s | 6.4 |
| 1990 | 36.0°C | 27.0°C | 18.0°C | 38.3°C | 10.1°C | 0 mm | 40% | 2.3 m/s | 6.5 |
| 1989 | 35.1°C | 26.5°C | 17.9°C | 40.2°C | 12.4°C | 0 mm | 34% | 2.7 m/s | 6.5 |
| 1988 | 37.1°C | 29.3°C | 21.5°C | 39.3°C | 16.4°C | 8 mm | 40% | 2.7 m/s | 6.2 |
| 1987 | 35.9°C | 27.6°C | 19.3°C | 38.2°C | 14.1°C | 0 mm | 41% | 2.6 m/s | 6.2 |
| 1986 | 34.7°C | 26.7°C | 18.6°C | 38.8°C | 10.8°C | 8 mm | 44% | 2.3 m/s | 6.1 |
| 1985 | 36.8°C | 28.8°C | 20.9°C | 39.4°C | 16.4°C | 0 mm | 48% | 2.2 m/s | 6.6 |
| 1984 | 36.5°C | 29.1°C | 21.6°C | 39.2°C | 15.9°C | 6 mm | 48% | 2 m/s | 6.1 |
| 1983 | 36.2°C | 28.4°C | 20.6°C | 39.0°C | 14.1°C | 7 mm | 43% | 2.5 m/s | — |
| 1982 | 34.1°C | 26.6°C | 19.1°C | 35.7°C | 12.3°C | 6 mm | 43% | 3.2 m/s | — |
| 1981 🔥 | 37.1°C | 29.7°C | 22.2°C | 39.6°C | 14.5°C | 11 mm | 48% | 2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 35.7°C with lows near 19.4°C (mean 27.6°C), based on 45 years of NASA POWER data.
August averages 3 mm of rainfall in Adelaide River, one of the drier months. The wettest on record was 17 mm in 1996.
The hottest August reached 40.4°C in 2024. The coldest dipped to 10.1°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.1°C — but days and nights have moved in opposite directions. Daytime highs rose from 36.1°C to 36.5°C while overnight lows fell from 20.9°C to 20.3°C, widening the gap between day and night.
August is close to Adelaide River's year-round average and one of the drier months, so plan for around 35.7°C daytime highs and 19.4°C at night.
Not quite — August is the 7th coolest month in Adelaide River, averaging 27.6°C.
For August in Adelaide River, pack light, breathable clothing and sun protection, with typical highs of 35.7°C and lows of 19.4°C.
Relative humidity in August averages 41% — relatively dry.
Average wind speed in August is 2.5 m/s. The windiest August on record averaged 3.2 m/s (1982).
The wettest August on record was 1996 with 17 mm. On average, August sees 3 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 Adelaide River 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.
