December is one of the warmer months of the year in Waitakere, with average highs near 19.5°C and lows around 16.6°C (mean 18.1°C). It is one of the drier months, averaging 88 mm of rainfall and 79% relative humidity across the period.
December is one of the warmer months of the year in Waitakere. Across 45 years of records, the warmest December in Waitakere was 2021 — when the month averaged 20.2°C — while the coldest was 2006 at 15.6°C. Typical December days reach 19.5°C with nights near 16.6°C. The long-term trend is warming, about 0.2°C per decade.
December is one of the drier months in Waitakere, averaging 88 mm of rainfall. The wettest December on record was 2011 with 175 mm, while the driest was 2017 at 25 mm.
Relative humidity in Waitakere during December averages 79%. The most humid December was 2023 at 83%, and the least humid was 1986 at 74%.
December receives about 6.3 kWh/m²/day of solar energy in Waitakere. The sunniest December was 2017 at 7.4 kWh/m²/day, and the cloudiest was 2011 at 5.4.
Average wind speed in Waitakere during December is 5.4 m/s. The windiest December was 2004 at 7.4 m/s, while the calmest was 2022 at 4.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.1°C | 17.6°C | 17.7°C | 18.4°C | 19.0°C | +0.9°C |
| Avg High | 19.6°C | 19.1°C | 19.0°C | 19.7°C | 20.3°C | +0.7°C |
| Avg Low | 16.6°C | 16.1°C | 16.3°C | 17.0°C | 17.6°C | +1°C |
| Avg Rain | 107 mm | 67 mm | 89 mm | 84 mm | 97 mm | -10 mm |
December temperatures in Waitakere have risen by about 1.1°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 11.4°C (2006) to a record high of 23.7°C (2010).
Rainfall in December is one of the drier months, averaging 88 mm, with a wettest year of 175 mm.
One of the best times to visit Waitakere
December is one of the best times to visit Waitakere. Expect days averaging 19.5°C and nights around 16.6°C (mean 18.1°C) — warmer than Waitakere's yearly average — with higher rainfall (88 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 | 20.9°C | 19.3°C | 17.8°C | 23.4°C | 16.4°C | 91 mm | 78% | 5.8 m/s | — |
| 2024 | 20.3°C | 18.9°C | 17.5°C | 22.3°C | 14.4°C | 78 mm | 80% | 5.3 m/s | 7.2 |
| 2023 | 19.8°C | 18.6°C | 17.3°C | 22.7°C | 14.3°C | 131 mm | 83% | 5 m/s | 5.6 |
| 2022 | 20.2°C | 18.9°C | 17.6°C | 23.4°C | 15.0°C | 119 mm | 81% | 4.3 m/s | 6.6 |
| 2021 🔥 | 21.4°C | 20.2°C | 19.0°C | 23.3°C | 16.7°C | 103 mm | 80% | 5.2 m/s | 6.4 |
| 2020 | 19.2°C | 17.8°C | 16.4°C | 22.2°C | 14.2°C | 59 mm | 78% | 5.7 m/s | 7.2 |
| 2019 | 19.7°C | 18.3°C | 16.8°C | 22.6°C | 15.2°C | 70 mm | 79% | 5.8 m/s | 6.8 |
| 2018 | 19.8°C | 18.6°C | 17.5°C | 22.1°C | 14.6°C | 128 mm | 81% | 5 m/s | 6.5 |
| 2017 | 21.2°C | 19.9°C | 18.5°C | 23.0°C | 16.2°C | 25 mm | 75% | 4.7 m/s | 7.4 |
| 2016 | 18.7°C | 17.3°C | 15.8°C | 21.4°C | 14.2°C | 56 mm | 78% | 5.3 m/s | 6.8 |
| 2015 | 18.8°C | 17.5°C | 16.2°C | 23.4°C | 14.6°C | 44 mm | 79% | 5.6 m/s | 6.9 |
| 2014 | 19.3°C | 17.9°C | 16.4°C | 21.8°C | 12.7°C | 81 mm | 79% | 5.3 m/s | 5.9 |
| 2013 | 19.6°C | 18.3°C | 17.1°C | 21.9°C | 15.5°C | 106 mm | 76% | 5.3 m/s | 6.7 |
| 2012 | 20.1°C | 18.6°C | 17.1°C | 23.7°C | 13.8°C | 65 mm | 81% | 5 m/s | 5.9 |
| 2011 🌧️ | 19.4°C | 18.1°C | 16.7°C | 22.1°C | 14.0°C | 175 mm | 80% | 5.7 m/s | 5.4 |
| 2010 | 20.7°C | 19.2°C | 17.8°C | 23.7°C | 15.6°C | 92 mm | 81% | 4.8 m/s | 5.6 |
| 2009 | 18.9°C | 17.5°C | 16.1°C | 21.0°C | 13.8°C | 89 mm | 79% | 5.3 m/s | 6.8 |
| 2008 | 19.4°C | 17.9°C | 16.4°C | 21.7°C | 14.8°C | 106 mm | 78% | 5.4 m/s | 6.1 |
| 2007 | 20.0°C | 18.4°C | 16.8°C | 22.2°C | 15.0°C | 69 mm | 79% | 5.5 m/s | 5.6 |
| 2006 ❄️ | 16.8°C | 15.6°C | 14.4°C | 18.9°C | 11.4°C | 65 mm | 77% | 5.9 m/s | 6.5 |
| 2005 | 20.0°C | 18.7°C | 17.4°C | 22.5°C | 14.6°C | 81 mm | 82% | 5.9 m/s | 6.4 |
| 2004 | 17.0°C | 15.7°C | 14.4°C | 20.1°C | 12.0°C | 121 mm | 77% | 7.4 m/s | 6 |
| 2003 | 19.6°C | 18.3°C | 17.0°C | 22.5°C | 14.4°C | 85 mm | 81% | 5 m/s | 6.3 |
| 2002 | 18.8°C | 17.5°C | 16.1°C | 21.2°C | 14.2°C | 80 mm | 79% | 5.5 m/s | 6.2 |
| 2001 | 20.0°C | 18.8°C | 17.6°C | 22.1°C | 15.7°C | 135 mm | 82% | 6.3 m/s | 5.6 |
| 2000 | 19.9°C | 18.5°C | 17.1°C | 21.8°C | 14.0°C | 59 mm | 79% | 5.1 m/s | 6.4 |
| 1999 | 18.5°C | 17.2°C | 15.9°C | 20.6°C | 14.3°C | 37 mm | 76% | 5.9 m/s | 6.2 |
| 1998 | 19.8°C | 18.3°C | 16.7°C | 22.8°C | 14.9°C | 45 mm | 78% | 5.4 m/s | 6.3 |
| 1997 | 19.5°C | 17.8°C | 16.2°C | 22.3°C | 13.9°C | 50 mm | 77% | 4.9 m/s | 6.4 |
| 1996 | 18.6°C | 17.1°C | 15.7°C | 20.7°C | 13.5°C | 159 mm | 78% | 5.8 m/s | 6.1 |
| 1995 | 19.8°C | 18.4°C | 17.0°C | 21.8°C | 15.7°C | 88 mm | 81% | 5.7 m/s | 6.2 |
| 1994 | 19.6°C | 18.0°C | 16.3°C | 23.3°C | 14.0°C | 27 mm | 78% | 5.2 m/s | 6.3 |
| 1993 | 18.4°C | 16.9°C | 15.4°C | 22.2°C | 12.3°C | 37 mm | 75% | 5.6 m/s | 6 |
| 1992 | 18.8°C | 17.3°C | 15.8°C | 20.9°C | 11.5°C | 140 mm | 80% | 5.9 m/s | 5.6 |
| 1991 | 18.2°C | 16.8°C | 15.3°C | 21.4°C | 12.7°C | 49 mm | 79% | 5.2 m/s | 6.2 |
| 1990 | 19.4°C | 17.9°C | 16.4°C | 22.2°C | 14.8°C | 37 mm | 78% | 6.1 m/s | 6.4 |
| 1989 | 19.2°C | 17.7°C | 16.2°C | 21.5°C | 14.4°C | 74 mm | 76% | 5.8 m/s | 6.5 |
| 1988 | 20.6°C | 19.0°C | 17.4°C | 23.4°C | 15.2°C | 141 mm | 76% | 5 m/s | 6.6 |
| 1987 | 19.0°C | 17.6°C | 16.2°C | 22.3°C | 14.2°C | 132 mm | 80% | 5.8 m/s | 6.3 |
| 1986 | 19.4°C | 17.8°C | 16.3°C | 22.4°C | 13.6°C | 105 mm | 74% | 4.6 m/s | 6.9 |
| 1985 | 20.1°C | 18.5°C | 16.9°C | 23.1°C | 14.5°C | 132 mm | 78% | 4.5 m/s | 6.8 |
| 1984 | 20.8°C | 19.2°C | 17.6°C | 23.1°C | 16.0°C | 121 mm | 80% | 4.9 m/s | 6.3 |
| 1983 | 18.4°C | 17.0°C | 15.6°C | 21.2°C | 14.0°C | 133 mm | 77% | 6.2 m/s | — |
| 1982 | 18.5°C | 17.0°C | 15.5°C | 21.6°C | 12.4°C | 56 mm | 77% | 5.8 m/s | — |
| 1981 | 20.6°C | 19.0°C | 17.4°C | 23.2°C | 15.3°C | 63 mm | 80% | 4.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 19.5°C with lows near 16.6°C (mean 18.1°C), based on 45 years of NASA POWER data.
December averages 88 mm of rainfall in Waitakere, one of the drier months. The wettest on record was 175 mm in 2011.
The hottest December reached 23.7°C in 2010. The coldest dipped to 11.4°C in 2006.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.1°C. Daytime highs moved from 19.7°C to 20.5°C and overnight lows from 16.6°C to 17.8°C over the same span.
December is one of the warmer months of the year in Waitakere and one of the drier months, so plan for around 19.5°C daytime highs and 16.6°C at night.
Not quite — December is the 9th coolest month in Waitakere, averaging 18.1°C.
For December in Waitakere, pack light layers you can adjust through the day, with typical highs of 19.5°C and lows of 16.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 79% — quite humid.
Average wind speed in December is 5.4 m/s. The windiest December on record averaged 7.4 m/s (2004).
The wettest December on record was 2011 with 175 mm. On average, December sees 88 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 December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
