August is one of the cooler months of the year in Waitakere, with average highs near 13.9°C and lows around 11.6°C (mean 12.8°C). It is a relatively wet time of year, averaging 124 mm of rainfall and 81% relative humidity across the period.
August is one of the cooler months of the year in Waitakere. Across 45 years of records, the warmest August in Waitakere was 2022 — when the month averaged 13.6°C — while the coldest was 2004 at 11.6°C. Typical August days reach 13.9°C with nights near 11.6°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in Waitakere, averaging 124 mm of rainfall. The wettest August on record was 1992 with 220 mm, while the driest was 1982 at 40 mm.
Relative humidity in Waitakere during August averages 81%. The most humid August was 2010 at 84%, and the least humid was 1993 at 77%.
August receives about 2.9 kWh/m²/day of solar energy in Waitakere. The sunniest August was 2005 at 3.3 kWh/m²/day, and the cloudiest was 2010 at 2.5.
Average wind speed in Waitakere during August is 6 m/s. The windiest August was 1992 at 7.9 m/s, while the calmest was 1987 at 4.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.6°C | 12.4°C | 12.8°C | 12.9°C | 13.0°C | +0.4°C |
| Avg High | 13.8°C | 13.5°C | 13.9°C | 14.1°C | 14.1°C | +0.3°C |
| Avg Low | 11.4°C | 11.2°C | 11.7°C | 11.7°C | 11.9°C | +0.5°C |
| Avg Rain | 115 mm | 136 mm | 100 mm | 141 mm | 129 mm | +14 mm |
August temperatures in Waitakere have risen by about 0.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 7.4°C (2008) to a record high of 17.7°C (2014).
Rainfall in August is a relatively wet time of year, averaging 124 mm, with a wettest year of 220 mm.
A quieter season to visit Waitakere
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Waitakere. That said, August — with days averaging 13.9°C and nights around 11.6°C (mean 12.8°C) and higher rainfall (124 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 | 13.8°C | 12.5°C | 11.3°C | 15.4°C | 9.2°C | 136 mm | 80% | 6 m/s | 3.2 |
| 2024 | 14.4°C | 13.3°C | 12.2°C | 17.4°C | 9.8°C | 131 mm | 82% | 5.7 m/s | 3 |
| 2023 | 13.2°C | 12.1°C | 11.0°C | 14.6°C | 9.1°C | 83 mm | 78% | 4.9 m/s | 3.1 |
| 2022 🔥 | 14.8°C | 13.6°C | 12.5°C | 16.9°C | 9.4°C | 158 mm | 83% | 5.2 m/s | 2.8 |
| 2021 | 14.1°C | 13.0°C | 11.9°C | 16.1°C | 9.1°C | 119 mm | 81% | 6.5 m/s | 2.9 |
| 2020 | 14.5°C | 13.4°C | 12.3°C | 15.9°C | 9.5°C | 147 mm | 82% | 6.1 m/s | 2.9 |
| 2019 | 14.1°C | 13.0°C | 12.0°C | 16.5°C | 8.3°C | 154 mm | 80% | 7.2 m/s | 2.9 |
| 2018 | 14.3°C | 13.2°C | 12.0°C | 15.9°C | 9.6°C | 124 mm | 81% | 5.1 m/s | 3.1 |
| 2017 | 14.7°C | 13.5°C | 12.3°C | 16.3°C | 9.1°C | 173 mm | 83% | 5.5 m/s | 3 |
| 2016 | 13.7°C | 12.5°C | 11.3°C | 16.3°C | 8.5°C | 121 mm | 81% | 5.4 m/s | 2.9 |
| 2015 | 13.8°C | 12.5°C | 11.3°C | 15.7°C | 7.9°C | 158 mm | 82% | 5.5 m/s | 2.9 |
| 2014 | 13.9°C | 12.6°C | 11.3°C | 17.7°C | 8.5°C | 125 mm | 79% | 6.4 m/s | 2.8 |
| 2013 | 14.5°C | 13.4°C | 12.3°C | 16.4°C | 9.3°C | 153 mm | 83% | 5.7 m/s | 2.7 |
| 2012 | 14.5°C | 13.2°C | 11.9°C | 16.0°C | 10.4°C | 138 mm | 82% | 5.1 m/s | 3 |
| 2011 | 13.1°C | 11.9°C | 10.8°C | 15.9°C | 7.4°C | 63 mm | 80% | 5 m/s | 3.1 |
| 2010 | 14.1°C | 13.1°C | 12.2°C | 15.9°C | 9.4°C | 202 mm | 84% | 6.1 m/s | 2.5 |
| 2009 | 14.7°C | 13.5°C | 12.3°C | 17.0°C | 10.4°C | 115 mm | 83% | 6.3 m/s | 2.9 |
| 2008 | 13.5°C | 12.5°C | 11.5°C | 15.7°C | 7.4°C | 162 mm | 80% | 6.9 m/s | 2.9 |
| 2007 | 13.9°C | 13.0°C | 12.0°C | 16.2°C | 9.8°C | 122 mm | 80% | 6.6 m/s | 2.8 |
| 2006 | 13.5°C | 12.5°C | 11.4°C | 16.0°C | 9.0°C | 109 mm | 81% | 5.6 m/s | 2.9 |
| 2005 | 14.5°C | 13.3°C | 12.0°C | 15.8°C | 10.2°C | 51 mm | 78% | 4.6 m/s | 3.3 |
| 2004 ❄️ | 12.7°C | 11.6°C | 10.5°C | 15.0°C | 7.8°C | 81 mm | 78% | 6.4 m/s | 3.1 |
| 2003 | 14.0°C | 12.8°C | 11.5°C | 15.7°C | 9.8°C | 77 mm | 81% | 5.7 m/s | 2.8 |
| 2002 | 13.8°C | 12.7°C | 11.5°C | 15.4°C | 9.2°C | 72 mm | 80% | 6.6 m/s | 2.9 |
| 2001 | 14.2°C | 13.1°C | 12.1°C | 16.9°C | 9.6°C | 115 mm | 81% | 6.3 m/s | 2.9 |
| 2000 | 14.0°C | 12.9°C | 11.9°C | 16.0°C | 10.4°C | 95 mm | 79% | 5.4 m/s | 3 |
| 1999 | 13.8°C | 12.6°C | 11.4°C | 15.8°C | 8.6°C | 108 mm | 78% | 5.7 m/s | 3 |
| 1998 | 14.3°C | 13.2°C | 12.1°C | 16.3°C | 9.4°C | 130 mm | 78% | 6.2 m/s | 2.6 |
| 1997 | 13.2°C | 11.9°C | 10.7°C | 14.6°C | 8.5°C | 76 mm | 81% | 6.7 m/s | 2.8 |
| 1996 | 13.2°C | 12.1°C | 11.0°C | 15.6°C | 7.8°C | 183 mm | 80% | 7 m/s | 2.7 |
| 1995 | 13.2°C | 12.0°C | 10.8°C | 14.7°C | 8.7°C | 114 mm | 82% | 6.1 m/s | 2.9 |
| 1994 | 13.3°C | 12.2°C | 11.1°C | 15.3°C | 9.6°C | 111 mm | 80% | 5.8 m/s | 3 |
| 1993 | 13.2°C | 12.1°C | 11.0°C | 14.5°C | 9.2°C | 57 mm | 77% | 6.3 m/s | 2.8 |
| 1992 🌧️ | 12.8°C | 11.7°C | 10.6°C | 14.8°C | 7.6°C | 220 mm | 79% | 7.9 m/s | 2.8 |
| 1991 | 14.0°C | 12.9°C | 11.8°C | 16.3°C | 10.2°C | 182 mm | 83% | 7 m/s | 2.8 |
| 1990 | 14.1°C | 12.9°C | 11.8°C | 16.1°C | 9.7°C | 181 mm | 80% | 6 m/s | 2.6 |
| 1989 | 14.0°C | 12.7°C | 11.5°C | 16.1°C | 8.4°C | 133 mm | 81% | 7.1 m/s | 2.9 |
| 1988 | 14.2°C | 13.0°C | 11.8°C | 16.0°C | 8.8°C | 145 mm | 82% | 6.3 m/s | 2.8 |
| 1987 | 14.3°C | 13.2°C | 12.0°C | 16.5°C | 10.4°C | 86 mm | 82% | 4.1 m/s | 3.1 |
| 1986 | 13.2°C | 12.1°C | 10.9°C | 16.2°C | 8.7°C | 165 mm | 79% | 5.5 m/s | 3 |
| 1985 | 13.7°C | 12.5°C | 11.2°C | 15.6°C | 8.8°C | 102 mm | 78% | 6.1 m/s | 3 |
| 1984 | 14.2°C | 13.1°C | 12.0°C | 15.7°C | 9.0°C | 139 mm | 81% | 6.3 m/s | 2.8 |
| 1983 | 13.4°C | 12.1°C | 10.9°C | 15.9°C | 8.2°C | 77 mm | 82% | 5.6 m/s | — |
| 1982 | 13.6°C | 12.5°C | 11.4°C | 15.0°C | 8.6°C | 40 mm | 79% | 5.3 m/s | — |
| 1981 | 13.3°C | 12.1°C | 11.0°C | 15.3°C | 8.7°C | 149 mm | 80% | 6.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 13.9°C with lows near 11.6°C (mean 12.8°C), based on 45 years of NASA POWER data.
August averages 124 mm of rainfall in Waitakere, a relatively wet time of year. The wettest on record was 220 mm in 1992.
The hottest August reached 17.7°C in 2014. The coldest dipped to 7.4°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.4°C. Daytime highs moved from 13.6°C to 14.1°C and overnight lows from 11.3°C to 11.8°C over the same span.
August is one of the cooler months of the year in Waitakere and a relatively wet time of year, so plan for around 13.9°C daytime highs and 11.6°C at night.
Yes — August is the coldest month of the year in Waitakere, averaging 12.8°C.
For August in Waitakere, pack light layers you can adjust through the day, with typical highs of 13.9°C and lows of 11.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 81% — quite humid.
Average wind speed in August is 6 m/s. The windiest August on record averaged 7.9 m/s (1992).
The wettest August on record was 1992 with 220 mm. On average, August sees 124 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 Waitakere 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.
