August is one of the cooler months of the year in Carnarvon, with average highs near 23.2°C and lows around 14.7°C (mean 19°C). It is about average for rainfall, averaging 16 mm of rainfall and 64% relative humidity across the period.
August is one of the cooler months of the year in Carnarvon. Across 45 years of records, the warmest August in Carnarvon was 2014 — when the month averaged 22°C — while the coldest was 2004 at 17°C. Typical August days reach 23.2°C with nights near 14.7°C. The long-term August temperature trend is broadly flat.
August is about average for rainfall in Carnarvon, averaging 16 mm of rainfall. The wettest August on record was 1990 with 48 mm, while the driest was 1989 at 0 mm.
Relative humidity in Carnarvon during August averages 64%. The most humid August was 1998 at 76%, and the least humid was 2014 at 53%.
August receives about 5 kWh/m²/day of solar energy in Carnarvon. The sunniest Augusts were 2019 and 2021 at 5.4 kWh/m²/day, and the cloudiest was 1990 at 4.3.
Average wind speed in Carnarvon during August is 4.7 m/s. The windiest Augusts were 1992 and 2017 at 5.3 m/s, while the calmest was 2014 at 3.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.0°C | 18.7°C | 18.6°C | 19.2°C | 19.3°C | +0.3°C |
| Avg High | 23.1°C | 22.7°C | 23.1°C | 23.6°C | 23.7°C | +0.6°C |
| Avg Low | 14.9°C | 14.7°C | 14.2°C | 14.7°C | 14.9°C | 0°C |
| Avg Rain | 16 mm | 22 mm | 12 mm | 15 mm | 11 mm | -4 mm |
August temperatures in Carnarvon have risen by about 0.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 7.7°C (2021) to a record high of 33.6°C (2023).
Rainfall in August is about average for rainfall, averaging 16 mm, with a wettest year of 48 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows fell 0.1°C per decade, widening the gap between day and night.
A good time to visit Carnarvon
August is a good time to visit Carnarvon, with days averaging 23.2°C and nights around 14.7°C (mean 19°C, cooler than Carnarvon's yearly average) and low rainfall. October and May 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 | 23.4°C | 19.1°C | 14.7°C | 29.3°C | 9.2°C | 16 mm | 62% | 4.5 m/s | 4.9 |
| 2024 | 23.0°C | 19.3°C | 15.6°C | 25.8°C | 11.0°C | 10 mm | 70% | 4.3 m/s | 5.2 |
| 2023 | 26.0°C | 20.9°C | 15.7°C | 33.6°C | 12.1°C | 3 mm | 61% | 4.4 m/s | 5.2 |
| 2022 | 23.1°C | 18.6°C | 14.0°C | 28.6°C | 8.4°C | 16 mm | 62% | 5.1 m/s | 5 |
| 2021 | 23.5°C | 18.8°C | 14.1°C | 29.5°C | 7.7°C | 2 mm | 63% | 4.8 m/s | 5.4 |
| 2020 | 23.0°C | 19.1°C | 15.3°C | 27.9°C | 11.6°C | 22 mm | 64% | 5.2 m/s | 4.9 |
| 2019 | 23.4°C | 18.8°C | 14.1°C | 29.8°C | 9.8°C | 12 mm | 61% | 4.8 m/s | 5.4 |
| 2018 | 22.4°C | 18.0°C | 13.5°C | 28.5°C | 8.3°C | 16 mm | 63% | 5.2 m/s | 5.3 |
| 2017 | 22.0°C | 18.2°C | 14.4°C | 25.7°C | 8.7°C | 17 mm | 66% | 5.3 m/s | 4.8 |
| 2016 | 21.9°C | 17.7°C | 13.5°C | 26.0°C | 8.7°C | 23 mm | 67% | 4.8 m/s | 5.1 |
| 2015 | 23.7°C | 19.4°C | 15.0°C | 30.5°C | 10.4°C | 15 mm | 64% | 4.3 m/s | 5 |
| 2014 🔥 | 27.5°C | 22.0°C | 16.4°C | 31.7°C | 13.2°C | 3 mm | 53% | 3.8 m/s | 5.2 |
| 2013 | 24.4°C | 19.9°C | 15.5°C | 28.4°C | 12.5°C | 2 mm | 61% | 4.6 m/s | 5 |
| 2012 | 23.7°C | 19.0°C | 14.4°C | 28.0°C | 11.5°C | 8 mm | 67% | 4.5 m/s | 5.2 |
| 2011 | 23.5°C | 19.5°C | 15.6°C | 27.4°C | 10.0°C | 20 mm | 71% | 4.4 m/s | 4.9 |
| 2010 | 23.5°C | 19.0°C | 14.4°C | 28.3°C | 10.4°C | 36 mm | 60% | 4.8 m/s | 4.5 |
| 2009 | 23.3°C | 19.1°C | 14.9°C | 26.9°C | 11.0°C | 13 mm | 66% | 4.3 m/s | 5.1 |
| 2008 | 23.9°C | 17.9°C | 12.0°C | 26.4°C | 8.9°C | 4 mm | 55% | 4.5 m/s | 5.1 |
| 2007 | 23.3°C | 18.7°C | 14.2°C | 26.6°C | 9.4°C | 1 mm | 66% | 4.6 m/s | 5.3 |
| 2006 | 24.8°C | 20.4°C | 16.0°C | 29.3°C | 11.1°C | 2 mm | 66% | 4.2 m/s | 5.3 |
| 2005 | 22.3°C | 17.9°C | 13.4°C | 25.8°C | 8.9°C | 16 mm | 66% | 4.9 m/s | 5.1 |
| 2004 ❄️ | 21.2°C | 17.0°C | 12.9°C | 23.6°C | 8.0°C | 6 mm | 66% | 4.8 m/s | 5.2 |
| 2003 | 22.6°C | 18.7°C | 14.7°C | 27.2°C | 11.1°C | 25 mm | 64% | 4.9 m/s | 5 |
| 2002 | 22.9°C | 18.6°C | 14.3°C | 26.3°C | 9.9°C | 13 mm | 62% | 5 m/s | 5.1 |
| 2001 | 24.3°C | 19.7°C | 15.2°C | 29.1°C | 12.3°C | 21 mm | 60% | 5 m/s | 4.9 |
| 2000 | 22.8°C | 18.4°C | 14.0°C | 26.5°C | 8.7°C | 23 mm | 64% | 4.9 m/s | 5.2 |
| 1999 | 23.9°C | 19.6°C | 15.2°C | 26.9°C | 10.0°C | 3 mm | 62% | 5.1 m/s | 5.1 |
| 1998 | 22.4°C | 18.9°C | 15.4°C | 26.9°C | 11.4°C | 3 mm | 76% | 3.9 m/s | 5.1 |
| 1997 | 22.3°C | 18.3°C | 14.2°C | 27.7°C | 9.1°C | 44 mm | 65% | 4.6 m/s | 4.7 |
| 1996 | 21.4°C | 17.9°C | 14.4°C | 23.9°C | 7.9°C | 17 mm | 71% | 4.6 m/s | 4.5 |
| 1995 | 23.9°C | 19.1°C | 14.2°C | 30.2°C | 10.5°C | 6 mm | 62% | 5.1 m/s | 5.2 |
| 1994 | 25.0°C | 20.1°C | 15.2°C | 30.8°C | 10.3°C | 29 mm | 62% | 4.5 m/s | 4.9 |
| 1993 | 23.0°C | 18.4°C | 13.9°C | 29.2°C | 9.1°C | 26 mm | 62% | 5 m/s | 5.1 |
| 1992 | 21.1°C | 17.9°C | 14.7°C | 24.9°C | 8.4°C | 45 mm | 65% | 5.3 m/s | 4.9 |
| 1991 | 23.6°C | 19.5°C | 15.4°C | 27.5°C | 12.2°C | 3 mm | 67% | 4.6 m/s | 5 |
| 1990 🌧️ | 20.7°C | 17.7°C | 14.7°C | 24.5°C | 9.9°C | 48 mm | 67% | 5.1 m/s | 4.3 |
| 1989 | 23.5°C | 18.8°C | 14.1°C | 27.7°C | 9.0°C | 0 mm | 60% | 5.2 m/s | 5.3 |
| 1988 | 24.2°C | 20.1°C | 16.1°C | 28.8°C | 12.5°C | 13 mm | 64% | 4.3 m/s | 4.8 |
| 1987 | 24.5°C | 19.7°C | 14.9°C | 29.6°C | 10.9°C | 9 mm | 57% | 4.4 m/s | 4.9 |
| 1986 | 21.5°C | 17.5°C | 13.4°C | 28.1°C | 8.4°C | 4 mm | 62% | 4.7 m/s | 5.1 |
| 1985 | 21.8°C | 18.1°C | 14.4°C | 24.3°C | 10.0°C | 35 mm | 65% | 4.8 m/s | 4.8 |
| 1984 | 21.9°C | 18.0°C | 14.2°C | 26.3°C | 9.9°C | 25 mm | 66% | 4.4 m/s | 4.9 |
| 1983 | 23.9°C | 20.0°C | 16.1°C | 28.3°C | 12.4°C | 28 mm | 68% | 4.2 m/s | — |
| 1982 | 24.1°C | 20.2°C | 16.2°C | 30.0°C | 12.3°C | 7 mm | 66% | 4.6 m/s | — |
| 1981 | 22.3°C | 18.7°C | 15.0°C | 29.0°C | 11.3°C | 21 mm | 65% | 4.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 23.2°C with lows near 14.7°C (mean 19°C), based on 45 years of NASA POWER data.
August averages 16 mm of rainfall in Carnarvon, about average for rainfall. The wettest on record was 48 mm in 1990.
The hottest August reached 33.6°C in 2023. The coldest dipped to 7.7°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.3°C — but days and nights have moved in opposite directions. Daytime highs rose from 22.8°C to 23.8°C while overnight lows fell from 15.2°C to 14.8°C, widening the gap between day and night.
August is one of the cooler months of the year in Carnarvon and about average for rainfall, so plan for around 23.2°C daytime highs and 14.7°C at night.
Not quite — August is the 2nd coolest month in Carnarvon, averaging 19°C.
For August in Carnarvon, pack light layers you can adjust through the day, with typical highs of 23.2°C and lows of 14.7°C.
Relative humidity in August averages 64% — moderately humid.
Average wind speed in August is 4.7 m/s. The windiest August on record averaged 5.3 m/s (1992).
The wettest August on record was 1990 with 48 mm. On average, August sees 16 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 Carnarvon 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.
