August is one of the cooler months of the year in Whangarei, with average highs near 14.7°C and lows around 10.3°C (mean 12.5°C). It is a relatively wet time of year, averaging 124 mm of rainfall and 82% relative humidity across the period.
August is one of the cooler months of the year in Whangarei. Across 45 years of records, the warmest August in Whangarei was 2022 — when the month averaged 13.5°C — while the coldest were 1992 and 2004 at 11.4°C. Typical August days reach 14.7°C with nights near 10.3°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in Whangarei, averaging 124 mm of rainfall. The wettest August on record was 1989 with 255 mm, while the driest was 1982 at 41 mm.
Relative humidity in Whangarei during August averages 82%. The most humid August was 2010 at 86%, and the least humid was 1999 at 79%.
August receives about 3 kWh/m²/day of solar energy in Whangarei. The sunniest August was 1994 at 3.3 kWh/m²/day, and the cloudiest was 2010 at 2.6.
Average wind speed in Whangarei during August is 5.6 m/s. The windiest August was 1992 at 7.5 m/s, while the calmest was 1987 at 3.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.5°C | 12.1°C | 12.5°C | 12.7°C | 12.8°C | +0.3°C |
| Avg High | 14.7°C | 14.3°C | 14.7°C | 14.9°C | 14.8°C | +0.1°C |
| Avg Low | 10.2°C | 9.8°C | 10.4°C | 10.6°C | 10.7°C | +0.5°C |
| Avg Rain | 122 mm | 134 mm | 110 mm | 125 mm | 130 mm | +8 mm |
August temperatures in Whangarei have risen by about 0.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.6°C (2011) to a record high of 18.9°C (2011).
Rainfall in August is a relatively wet time of year, averaging 124 mm, with a wettest year of 255 mm.
A quieter season to visit Whangarei
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Whangarei. That said, August — with days averaging 14.7°C and nights around 10.3°C (mean 12.5°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 | 14.3°C | 12.4°C | 10.5°C | 17.0°C | 6.8°C | 134 mm | 82% | 6.1 m/s | 3.1 |
| 2024 | 15.3°C | 13.1°C | 11.0°C | 18.6°C | 8.3°C | 115 mm | 84% | 5.3 m/s | 2.9 |
| 2023 | 13.9°C | 11.7°C | 9.4°C | 15.6°C | 6.6°C | 96 mm | 82% | 4.4 m/s | 3.1 |
| 2022 🔥 | 15.5°C | 13.5°C | 11.4°C | 18.2°C | 7.3°C | 133 mm | 85% | 5.1 m/s | 2.8 |
| 2021 | 14.7°C | 12.6°C | 10.5°C | 17.3°C | 7.2°C | 120 mm | 83% | 5.8 m/s | 3 |
| 2020 | 15.2°C | 13.3°C | 11.4°C | 17.3°C | 7.4°C | 184 mm | 84% | 6.2 m/s | 2.9 |
| 2019 | 15.1°C | 12.9°C | 10.7°C | 18.2°C | 8.0°C | 117 mm | 81% | 6.7 m/s | 3 |
| 2018 | 15.3°C | 13.0°C | 10.6°C | 17.2°C | 7.7°C | 87 mm | 82% | 5 m/s | 3.2 |
| 2017 | 15.6°C | 13.4°C | 11.2°C | 17.6°C | 9.2°C | 154 mm | 84% | 5.4 m/s | 2.9 |
| 2016 | 14.7°C | 12.5°C | 10.4°C | 17.6°C | 7.1°C | 142 mm | 81% | 5.1 m/s | 3 |
| 2015 | 14.6°C | 12.4°C | 10.3°C | 17.2°C | 6.0°C | 96 mm | 82% | 5.1 m/s | 3 |
| 2014 | 14.5°C | 12.4°C | 10.3°C | 18.3°C | 6.6°C | 135 mm | 81% | 6.2 m/s | 2.9 |
| 2013 | 15.2°C | 13.2°C | 11.2°C | 17.3°C | 9.2°C | 128 mm | 84% | 6 m/s | 2.7 |
| 2012 | 15.0°C | 12.9°C | 10.8°C | 16.7°C | 9.3°C | 130 mm | 83% | 5 m/s | 2.9 |
| 2011 | 14.1°C | 11.6°C | 9.0°C | 18.9°C | 4.6°C | 60 mm | 81% | 4.5 m/s | 3.2 |
| 2010 | 14.9°C | 13.0°C | 11.1°C | 17.4°C | 7.7°C | 197 mm | 86% | 6.2 m/s | 2.6 |
| 2009 | 15.3°C | 13.4°C | 11.6°C | 18.3°C | 7.9°C | 182 mm | 84% | 6 m/s | 2.9 |
| 2008 | 14.2°C | 12.2°C | 10.1°C | 16.5°C | 4.9°C | 106 mm | 82% | 6.5 m/s | 3.1 |
| 2007 | 15.1°C | 12.9°C | 10.6°C | 17.8°C | 8.1°C | 108 mm | 82% | 6.1 m/s | 3 |
| 2006 | 14.5°C | 12.3°C | 10.1°C | 17.1°C | 6.7°C | 131 mm | 83% | 5.1 m/s | 3 |
| 2005 | 15.3°C | 13.0°C | 10.7°C | 17.0°C | 8.8°C | 61 mm | 79% | 4.6 m/s | 3.2 |
| 2004 | 13.8°C | 11.4°C | 9.0°C | 16.7°C | 5.3°C | 84 mm | 80% | 5.8 m/s | 3.2 |
| 2003 | 14.1°C | 12.3°C | 10.6°C | 15.6°C | 7.9°C | 151 mm | 83% | 5.6 m/s | 2.8 |
| 2002 | 14.6°C | 12.4°C | 10.3°C | 17.7°C | 7.2°C | 68 mm | 81% | 6.2 m/s | 3 |
| 2001 | 15.1°C | 12.8°C | 10.5°C | 17.5°C | 8.0°C | 123 mm | 82% | 5.6 m/s | 3.1 |
| 2000 | 14.8°C | 12.5°C | 10.2°C | 17.6°C | 7.8°C | 85 mm | 80% | 5 m/s | 3.1 |
| 1999 | 14.7°C | 12.3°C | 9.8°C | 16.7°C | 7.1°C | 95 mm | 79% | 5.1 m/s | 3.1 |
| 1998 | 14.9°C | 13.1°C | 11.2°C | 17.6°C | 7.9°C | 198 mm | 80% | 5.9 m/s | 2.7 |
| 1997 | 13.7°C | 11.5°C | 9.2°C | 16.1°C | 6.8°C | 111 mm | 82% | 5.8 m/s | 2.9 |
| 1996 | 14.1°C | 12.1°C | 10.0°C | 16.9°C | 5.3°C | 202 mm | 82% | 6.9 m/s | 2.9 |
| 1995 | 14.4°C | 11.8°C | 9.2°C | 17.1°C | 6.6°C | 77 mm | 83% | 5.5 m/s | 3.2 |
| 1994 | 14.3°C | 11.8°C | 9.2°C | 16.2°C | 7.1°C | 91 mm | 82% | 5 m/s | 3.3 |
| 1993 | 14.0°C | 11.7°C | 9.5°C | 16.4°C | 7.5°C | 124 mm | 79% | 5.9 m/s | 3.1 |
| 1992 ❄️ | 13.4°C | 11.4°C | 9.3°C | 15.8°C | 6.5°C | 192 mm | 81% | 7.5 m/s | 3.1 |
| 1991 | 14.8°C | 12.5°C | 10.2°C | 17.2°C | 8.1°C | 112 mm | 85% | 6.5 m/s | 3 |
| 1990 | 14.9°C | 12.7°C | 10.5°C | 17.0°C | 7.7°C | 138 mm | 82% | 5.8 m/s | 2.8 |
| 1989 🌧️ | 14.6°C | 12.7°C | 10.8°C | 16.9°C | 6.4°C | 255 mm | 83% | 6.5 m/s | 2.9 |
| 1988 | 15.2°C | 12.9°C | 10.5°C | 18.4°C | 7.5°C | 79 mm | 82% | 5.8 m/s | 2.9 |
| 1987 | 15.6°C | 13.0°C | 10.3°C | 17.8°C | 7.8°C | 96 mm | 82% | 3.9 m/s | 3.1 |
| 1986 | 14.0°C | 11.9°C | 9.7°C | 17.0°C | 7.4°C | 129 mm | 81% | 5.2 m/s | 3.2 |
| 1985 | 14.3°C | 12.2°C | 10.2°C | 16.4°C | 6.5°C | 100 mm | 80% | 5.8 m/s | 3.1 |
| 1984 | 15.1°C | 12.9°C | 10.8°C | 17.8°C | 8.0°C | 150 mm | 81% | 5.7 m/s | 3 |
| 1983 | 14.4°C | 12.2°C | 9.9°C | 16.9°C | 6.1°C | 81 mm | 82% | 5.3 m/s | — |
| 1982 | 14.6°C | 12.2°C | 9.7°C | 16.4°C | 7.9°C | 41 mm | 81% | 4.5 m/s | — |
| 1981 | 14.3°C | 12.1°C | 9.8°C | 16.1°C | 6.9°C | 168 mm | 82% | 6.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 14.7°C with lows near 10.3°C (mean 12.5°C), based on 45 years of NASA POWER data.
August averages 124 mm of rainfall in Whangarei, a relatively wet time of year. The wettest on record was 255 mm in 1989.
The hottest August reached 18.9°C in 2011. The coldest dipped to 4.6°C in 2011.
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 14.5°C to 14.7°C and overnight lows from 10.1°C to 10.6°C over the same span.
August is one of the cooler months of the year in Whangarei and a relatively wet time of year, so plan for around 14.7°C daytime highs and 10.3°C at night.
Yes — August is the coldest month of the year in Whangarei, averaging 12.5°C.
For August in Whangarei, pack light layers you can adjust through the day, with typical highs of 14.7°C and lows of 10.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 82% — quite humid.
Average wind speed in August is 5.6 m/s. The windiest August on record averaged 7.5 m/s (1992).
The wettest August on record was 1989 with 255 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 Whangarei 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.
