July is one of the cooler months of the year in Waiuku, with average highs near 13.8°C and lows around 9.4°C (mean 11.6°C). It is a relatively wet time of year, averaging 122 mm of rainfall and 84% relative humidity across the period.
July is one of the cooler months of the year in Waiuku. Across 45 years of records, the warmest July in Waiuku was 1998 — when the month averaged 13.5°C — while the coldest was 1983 at 10.3°C. Typical July days reach 13.8°C with nights near 9.4°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Waiuku, averaging 122 mm of rainfall. The wettest July on record was 2022 with 283 mm, while the driest was 1993 at 6 mm.
Relative humidity in Waiuku during July averages 84%. The most humid Julys were 2007 and 2019 at 87%, and the least humid was 1994 at 80%.
July receives about 2.1 kWh/m²/day of solar energy in Waiuku. The sunniest Julys were 2010, 2018 and 2021, among others at 2.3 kWh/m²/day, and the cloudiest were 1998 and 2008 at 1.8.
Average wind speed in Waiuku during July is 4.7 m/s. The windiest July was 2000 at 6 m/s, while the calmest was 1993 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.3°C | 11.5°C | 11.6°C | 11.6°C | 12.3°C | +1°C |
| Avg High | 13.5°C | 13.6°C | 13.8°C | 13.9°C | 14.3°C | +0.8°C |
| Avg Low | 9.2°C | 9.3°C | 9.3°C | 9.4°C | 10.2°C | +1°C |
| Avg Rain | 104 mm | 125 mm | 114 mm | 109 mm | 179 mm | +75 mm |
July temperatures in Waiuku have risen by about 0.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 3.6°C (1994) to a record high of 18.4°C (1998).
Rainfall in July is a relatively wet time of year, averaging 122 mm, with a wettest year of 283 mm.
A quieter season to visit Waiuku
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Waiuku. That said, July — with days averaging 13.8°C and nights around 9.4°C (mean 11.6°C) and higher rainfall (122 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 | 14.6°C | 12.4°C | 10.3°C | 18.3°C | 5.4°C | 242 mm | 85% | 4.3 m/s | 2.2 |
| 2024 | 14.3°C | 12.0°C | 9.6°C | 16.0°C | 5.7°C | 141 mm | 86% | 3.8 m/s | 2.1 |
| 2023 | 14.0°C | 12.2°C | 10.4°C | 15.6°C | 6.8°C | 114 mm | 85% | 5.7 m/s | 2.1 |
| 2022 🌧️ | 14.8°C | 13.0°C | 11.2°C | 17.7°C | 7.5°C | 283 mm | 86% | 5.3 m/s | 1.9 |
| 2021 | 14.1°C | 11.9°C | 9.7°C | 16.5°C | 5.3°C | 134 mm | 85% | 4.7 m/s | 2.3 |
| 2020 | 14.1°C | 12.1°C | 10.1°C | 16.5°C | 6.3°C | 161 mm | 85% | 4.8 m/s | 2 |
| 2019 | 14.8°C | 12.6°C | 10.3°C | 17.7°C | 6.6°C | 144 mm | 87% | 4.2 m/s | 2.2 |
| 2018 | 14.2°C | 11.9°C | 9.6°C | 16.0°C | 5.6°C | 103 mm | 85% | 4.1 m/s | 2.3 |
| 2017 | 13.5°C | 11.4°C | 9.3°C | 17.0°C | 4.0°C | 153 mm | 86% | 4.4 m/s | 2 |
| 2016 | 14.2°C | 12.2°C | 10.2°C | 16.4°C | 6.8°C | 126 mm | 82% | 5.6 m/s | 2.2 |
| 2015 | 13.2°C | 10.9°C | 8.5°C | 15.2°C | 3.8°C | 138 mm | 84% | 4.7 m/s | 2.2 |
| 2014 | 13.5°C | 11.3°C | 9.0°C | 16.4°C | 4.4°C | 78 mm | 83% | 5.1 m/s | 2.2 |
| 2013 | 13.8°C | 11.6°C | 9.5°C | 17.2°C | 5.3°C | 41 mm | 84% | 3.5 m/s | 2.1 |
| 2012 | 14.1°C | 11.7°C | 9.2°C | 16.4°C | 5.7°C | 145 mm | 84% | 3.9 m/s | 2.1 |
| 2011 | 13.8°C | 11.8°C | 9.7°C | 15.9°C | 4.8°C | 92 mm | 83% | 5.8 m/s | 2.1 |
| 2010 | 13.5°C | 11.0°C | 8.6°C | 15.7°C | 4.4°C | 69 mm | 84% | 4.1 m/s | 2.3 |
| 2009 | 13.2°C | 10.9°C | 8.5°C | 15.3°C | 5.1°C | 112 mm | 85% | 4.7 m/s | 2.2 |
| 2008 | 13.9°C | 11.8°C | 9.7°C | 17.0°C | 4.6°C | 197 mm | 85% | 5.6 m/s | 1.8 |
| 2007 | 14.3°C | 12.0°C | 9.8°C | 16.5°C | 5.1°C | 150 mm | 87% | 4.9 m/s | 1.9 |
| 2006 | 13.7°C | 11.0°C | 8.4°C | 15.5°C | 4.0°C | 65 mm | 85% | 4.1 m/s | 2.2 |
| 2005 | 14.2°C | 12.3°C | 10.3°C | 16.1°C | 6.2°C | 152 mm | 86% | 4.6 m/s | 1.9 |
| 2004 | 13.1°C | 10.8°C | 8.5°C | 15.6°C | 3.7°C | 95 mm | 84% | 4.7 m/s | 2.3 |
| 2003 | 13.4°C | 11.1°C | 8.8°C | 15.1°C | 5.7°C | 96 mm | 82% | 4.3 m/s | 2.1 |
| 2002 | 14.1°C | 11.9°C | 9.7°C | 15.9°C | 6.0°C | 114 mm | 83% | 5.4 m/s | 2.1 |
| 2001 | 13.4°C | 11.0°C | 8.5°C | 17.4°C | 5.1°C | 69 mm | 82% | 4.4 m/s | 2.2 |
| 2000 | 15.1°C | 13.1°C | 11.1°C | 17.1°C | 7.5°C | 89 mm | 82% | 6 m/s | 2.1 |
| 1999 | 14.2°C | 11.9°C | 9.6°C | 17.4°C | 5.3°C | 78 mm | 84% | 4.4 m/s | 2 |
| 1998 🔥 | 15.5°C | 13.5°C | 11.5°C | 18.4°C | 8.2°C | 253 mm | 86% | 5.3 m/s | 1.8 |
| 1997 | 12.9°C | 10.8°C | 8.7°C | 15.9°C | 4.5°C | 37 mm | 82% | 4 m/s | 2.2 |
| 1996 | 13.6°C | 11.4°C | 9.2°C | 16.4°C | 4.7°C | 173 mm | 86% | 4.6 m/s | 2.1 |
| 1995 | 13.0°C | 11.1°C | 9.1°C | 15.2°C | 4.3°C | 148 mm | 84% | 5.5 m/s | 1.9 |
| 1994 | 13.3°C | 11.1°C | 8.9°C | 15.5°C | 3.6°C | 30 mm | 80% | 5.5 m/s | 2.2 |
| 1993 | 13.4°C | 10.9°C | 8.4°C | 15.4°C | 4.0°C | 6 mm | 82% | 3.3 m/s | 2.1 |
| 1992 | 13.5°C | 11.4°C | 9.4°C | 16.1°C | 5.6°C | 192 mm | 86% | 5.8 m/s | 1.9 |
| 1991 | 13.1°C | 10.9°C | 8.8°C | 15.3°C | 5.0°C | 164 mm | 84% | 4.3 m/s | 2.2 |
| 1990 | 13.7°C | 11.6°C | 9.5°C | 15.4°C | 6.2°C | 173 mm | 86% | 4.8 m/s | 2.1 |
| 1989 | 13.5°C | 10.9°C | 8.4°C | 16.1°C | 4.6°C | 91 mm | 81% | 3.8 m/s | 2.3 |
| 1988 | 13.9°C | 12.2°C | 10.4°C | 16.7°C | 5.4°C | 172 mm | 84% | 5.8 m/s | 2 |
| 1987 | 13.3°C | 11.3°C | 9.3°C | 15.2°C | 6.1°C | 89 mm | 83% | 4.8 m/s | 2.1 |
| 1986 | 12.9°C | 10.7°C | 8.5°C | 14.8°C | 4.3°C | 138 mm | 81% | 5 m/s | 2.2 |
| 1985 | 14.1°C | 12.4°C | 10.6°C | 16.5°C | 8.2°C | 135 mm | 87% | 4.5 m/s | 2 |
| 1984 | 14.3°C | 12.0°C | 9.7°C | 17.2°C | 5.1°C | 96 mm | 87% | 4.2 m/s | 1.9 |
| 1983 ❄️ | 12.9°C | 10.3°C | 7.7°C | 15.9°C | 4.0°C | 41 mm | 83% | 3.8 m/s | — |
| 1982 | 13.0°C | 10.8°C | 8.6°C | 15.8°C | 4.0°C | 72 mm | 80% | 4.6 m/s | — |
| 1981 | 13.5°C | 11.4°C | 9.2°C | 16.7°C | 5.1°C | 102 mm | 85% | 4.8 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 13.8°C with lows near 9.4°C (mean 11.6°C), based on 45 years of NASA POWER data.
July averages 122 mm of rainfall in Waiuku, a relatively wet time of year. The wettest on record was 283 mm in 2022.
The hottest July reached 18.4°C in 1998. The coldest dipped to 3.6°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.9°C. Daytime highs moved from 13.6°C to 14.4°C and overnight lows from 9.2°C to 10.2°C over the same span.
July is one of the cooler months of the year in Waiuku and a relatively wet time of year, so plan for around 13.8°C daytime highs and 9.4°C at night.
Yes — July is the coldest month of the year in Waiuku, averaging 11.6°C.
For July in Waiuku, pack light layers you can adjust through the day, with typical highs of 13.8°C and lows of 9.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 84% — quite humid.
Average wind speed in July is 4.7 m/s. The windiest July on record averaged 6 m/s (2000).
The wettest July on record was 2022 with 283 mm. On average, July sees 122 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 Waiuku behaves each July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
