August is one of the cooler months of the year in Katoomba, with average highs near 12.3°C and lows around 2.6°C (mean 7.5°C). It is about average for rainfall, averaging 60 mm of rainfall and 76% relative humidity across the period.
August is one of the cooler months of the year in Katoomba. Across 45 years of records, the warmest August in Katoomba was 2024 — when the month averaged 10.5°C — while the coldest was 1989 at 5.3°C. Typical August days reach 12.3°C with nights near 2.6°C. The long-term trend is warming, about 0.4°C per decade.
August is about average for rainfall in Katoomba, averaging 60 mm of rainfall. The wettest August on record was 1986 with 286 mm, while the driest was 1982 at 5 mm.
Relative humidity in Katoomba during August averages 76%. The most humid August was 1998 at 87%, and the least humid was 1982 at 61%.
August receives about 3.7 kWh/m²/day of solar energy in Katoomba. The sunniest August was 1995 at 4.2 kWh/m²/day, and the cloudiest was 1987 at 3.
Average wind speed in Katoomba during August is 0.5 m/s. The windiest Augusts were 1991 and 2010 at 0.6 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.0°C | 7.0°C | 7.6°C | 7.4°C | 8.5°C | +1.5°C |
| Avg High | 11.6°C | 11.8°C | 12.7°C | 12.5°C | 13.1°C | +1.5°C |
| Avg Low | 2.4°C | 2.1°C | 2.5°C | 2.4°C | 3.9°C | +1.5°C |
| Avg Rain | 87 mm | 79 mm | 42 mm | 41 mm | 46 mm | -40 mm |
August temperatures in Katoomba have risen by about 1.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -3.6°C (1994) to a record high of 21.9°C (2024).
Rainfall in August is about average for rainfall, averaging 60 mm, with a wettest year of 286 mm.
A quieter season to visit Katoomba
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Katoomba. That said, August — with days averaging 12.3°C and nights around 2.6°C (mean 7.5°C) and moderate rainfall (60 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 11.7°C | 8.0°C | 4.2°C | 18.0°C | -1.2°C | 85 mm | 84% | 0.4 m/s | 3.1 |
| 2024 🔥 | 15.1°C | 10.5°C | 5.9°C | 21.9°C | 0.8°C | 25 mm | 76% | 0.4 m/s | 3.4 |
| 2023 | 15.4°C | 10.1°C | 4.8°C | 19.7°C | 0.5°C | 31 mm | 73% | 0.4 m/s | 3.6 |
| 2022 | 12.0°C | 7.9°C | 3.7°C | 16.4°C | -0.6°C | 52 mm | 83% | 0.4 m/s | 3.2 |
| 2021 | 12.9°C | 7.9°C | 2.9°C | 18.4°C | 0.3°C | 32 mm | 77% | 0.5 m/s | 3.8 |
| 2020 | 11.3°C | 6.7°C | 2.1°C | 16.8°C | -2.6°C | 53 mm | 79% | 0.5 m/s | 3.8 |
| 2019 | 13.5°C | 7.8°C | 2.2°C | 18.7°C | -2.2°C | 16 mm | 64% | 0.5 m/s | 3.9 |
| 2018 | 12.6°C | 7.2°C | 1.8°C | 18.3°C | -2.9°C | 20 mm | 66% | 0.5 m/s | 3.7 |
| 2017 | 13.0°C | 7.4°C | 1.8°C | 18.2°C | -2.7°C | 13 mm | 65% | 0.5 m/s | 4.1 |
| 2016 | 12.5°C | 7.5°C | 2.6°C | 16.9°C | -1.9°C | 61 mm | 78% | 0.4 m/s | 3.4 |
| 2015 | 12.4°C | 7.4°C | 2.4°C | 18.4°C | -2.6°C | 27 mm | 78% | 0.4 m/s | 3.6 |
| 2014 | 12.1°C | 7.4°C | 2.7°C | 16.4°C | -3.2°C | 82 mm | 82% | 0.4 m/s | 3.3 |
| 2013 | 13.0°C | 8.0°C | 2.9°C | 18.7°C | -1.3°C | 24 mm | 73% | 0.5 m/s | 4.1 |
| 2012 | 11.7°C | 6.6°C | 1.4°C | 18.9°C | -0.9°C | 26 mm | 74% | 0.5 m/s | 4 |
| 2011 | 13.7°C | 9.0°C | 4.4°C | 18.7°C | 0.6°C | 58 mm | 78% | 0.4 m/s | 3.4 |
| 2010 | 10.5°C | 6.0°C | 1.6°C | 14.7°C | -2.1°C | 83 mm | 80% | 0.6 m/s | 3.9 |
| 2009 | 14.6°C | 8.9°C | 3.2°C | 20.3°C | -0.8°C | 10 mm | 65% | 0.5 m/s | 4.1 |
| 2008 | 10.6°C | 5.8°C | 1.0°C | 16.2°C | -3.4°C | 37 mm | 76% | 0.5 m/s | 3.6 |
| 2007 | 12.8°C | 8.6°C | 4.4°C | 19.1°C | -0.8°C | 59 mm | 77% | 0.5 m/s | 3.5 |
| 2006 | 13.9°C | 8.3°C | 2.7°C | 17.6°C | -1.1°C | 14 mm | 70% | 0.4 m/s | 3.7 |
| 2005 | 13.2°C | 7.3°C | 1.4°C | 17.5°C | -3.1°C | 23 mm | 71% | 0.5 m/s | 4 |
| 2004 | 12.4°C | 7.7°C | 3.0°C | 20.3°C | 0.8°C | 58 mm | 74% | 0.5 m/s | 3.7 |
| 2003 | 12.5°C | 7.4°C | 2.2°C | 17.6°C | -3.3°C | 85 mm | 75% | 0.5 m/s | 3.7 |
| 2002 | 14.1°C | 8.3°C | 2.4°C | 18.0°C | -3.1°C | 17 mm | 68% | 0.5 m/s | 3.8 |
| 2001 | 11.9°C | 7.1°C | 2.4°C | 16.8°C | -2.7°C | 52 mm | 74% | 0.5 m/s | 3.7 |
| 2000 | 10.9°C | 6.7°C | 2.6°C | 13.5°C | -2.2°C | 70 mm | 83% | 0.5 m/s | 3.5 |
| 1999 | 12.5°C | 7.7°C | 2.8°C | 17.6°C | -1.6°C | 66 mm | 79% | 0.4 m/s | 3.7 |
| 1998 | 11.9°C | 8.1°C | 4.3°C | 16.3°C | -1.5°C | 186 mm | 87% | 0.4 m/s | 3.2 |
| 1997 | 12.3°C | 6.8°C | 1.3°C | 16.7°C | -2.3°C | 29 mm | 72% | 0.5 m/s | 4 |
| 1996 | 11.2°C | 6.4°C | 1.6°C | 16.2°C | -2.8°C | 95 mm | 79% | 0.5 m/s | 3.6 |
| 1995 | 14.8°C | 8.9°C | 3.0°C | 21.0°C | -2.8°C | 6 mm | 73% | 0.5 m/s | 4.2 |
| 1994 | 12.2°C | 6.6°C | 1.0°C | 19.0°C | -3.6°C | 11 mm | 70% | 0.4 m/s | 3.9 |
| 1993 | 13.0°C | 8.0°C | 3.0°C | 16.9°C | -1.8°C | 37 mm | 78% | 0.4 m/s | 3.7 |
| 1992 | 11.0°C | 6.2°C | 1.4°C | 17.1°C | -2.1°C | 72 mm | 76% | 0.5 m/s | 3.7 |
| 1991 | 10.5°C | 5.9°C | 1.3°C | 16.1°C | -2.9°C | 85 mm | 77% | 0.6 m/s | 4 |
| 1990 | 9.0°C | 5.4°C | 1.7°C | 14.0°C | -2.4°C | 206 mm | 86% | 0.5 m/s | 3.4 |
| 1989 ❄️ | 9.5°C | 5.3°C | 1.1°C | 14.3°C | -1.8°C | 43 mm | 83% | 0.5 m/s | 3.8 |
| 1988 | 12.1°C | 7.5°C | 2.8°C | 18.1°C | -3.1°C | 69 mm | 81% | 0.5 m/s | 3.8 |
| 1987 | 12.0°C | 8.0°C | 4.1°C | 16.2°C | 0.7°C | 159 mm | 86% | 0.4 m/s | 3 |
| 1986 🌧️ | 10.9°C | 6.4°C | 2.0°C | 15.7°C | -1.9°C | 286 mm | 81% | 0.5 m/s | 3.7 |
| 1985 | 10.8°C | 6.3°C | 1.9°C | 16.5°C | -2.9°C | 82 mm | 82% | 0.5 m/s | 3.6 |
| 1984 | 10.7°C | 6.5°C | 2.3°C | 14.9°C | -0.3°C | 56 mm | 81% | 0.5 m/s | 3.8 |
| 1983 | 11.9°C | 7.3°C | 2.7°C | 15.8°C | -1.7°C | 40 mm | 82% | 0.4 m/s | — |
| 1982 | 16.2°C | 9.8°C | 3.4°C | 21.5°C | -0.1°C | 5 mm | 61% | 0.4 m/s | — |
| 1981 | 10.0°C | 5.5°C | 0.9°C | 14.3°C | -2.5°C | 42 mm | 79% | 0.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 12.3°C with lows near 2.6°C (mean 7.5°C), based on 45 years of NASA POWER data.
August averages 60 mm of rainfall in Katoomba, about average for rainfall. The wettest on record was 286 mm in 1986.
The hottest August reached 21.9°C in 2024. The coldest dipped to -3.6°C in 1994.
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 11.9°C to 13.4°C and overnight lows from 2.2°C to 4.3°C over the same span.
August is one of the cooler months of the year in Katoomba and about average for rainfall, so plan for around 12.3°C daytime highs and 2.6°C at night.
Not quite — August is the 3rd coolest month in Katoomba, averaging 7.5°C.
For August in Katoomba, pack warm layers and a jacket for chilly mornings, with typical highs of 12.3°C and lows of 2.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 76% — quite humid.
Average wind speed in August is 0.5 m/s. The windiest August on record averaged 0.6 m/s (1991).
The wettest August on record was 1986 with 286 mm. On average, August sees 60 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 Katoomba 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.
