July is one of the cooler months of the year in Atherton, with average highs near 21.2°C and lows around 13.3°C (mean 17.3°C). It is one of the drier months, averaging 64 mm of rainfall and 84% relative humidity across the period.
July is one of the cooler months of the year in Atherton. Across 45 years of records, the warmest July in Atherton was 2025 — when the month averaged 20.7°C — while the coldest were 1985 and 2007 at 14.7°C. Typical July days reach 21.2°C with nights near 13.3°C. The long-term trend is warming, about 0.6°C per decade.
July is one of the drier months in Atherton, averaging 64 mm of rainfall. The wettest July on record was 2005 with 168 mm, while the driest was 2025 at 10 mm.
Relative humidity in Atherton during July averages 84%. The most humid July was 2010 at 91%, and the least humid was 2020 at 75%.
July receives about 4 kWh/m²/day of solar energy in Atherton. The sunniest Julys were 1996, 2000 and 2007 at 4.6 kWh/m²/day, and the cloudiest was 2010 at 3.1.
Average wind speed in Atherton during July is 1.1 m/s. The windiest Julys were 2003, 2013 and 2017 at 1.3 m/s, while the calmest was 2021 at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.5°C | 16.7°C | 16.6°C | 18.0°C | 19.0°C | +2.5°C |
| Avg High | 20.2°C | 20.5°C | 20.5°C | 22.0°C | 23.5°C | +3.3°C |
| Avg Low | 12.8°C | 13.0°C | 12.7°C | 14.1°C | 14.5°C | +1.7°C |
| Avg Rain | 67 mm | 86 mm | 67 mm | 53 mm | 37 mm | -30 mm |
July temperatures in Atherton have risen by about 3.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 3.2°C (1984) to a record high of 30.1°C (2025).
Rainfall in July is one of the drier months, averaging 64 mm, with a wettest year of 168 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.5°C per decade, widening the gap between day and night.
A good time to visit Atherton
July is a good time to visit Atherton, with days averaging 21.2°C and nights around 13.3°C (mean 17.3°C, cooler than Atherton's yearly average) and moderate rainfall. October and September are marginally more temperate, but July still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🔥 | 25.7°C | 20.7°C | 15.7°C | 30.1°C | 8.4°C | 10 mm | 78% | 0.9 m/s | 4 |
| 2024 | 22.8°C | 18.4°C | 13.9°C | 24.9°C | 6.1°C | 30 mm | 78% | 1.2 m/s | 4.1 |
| 2023 | 23.4°C | 19.5°C | 15.6°C | 28.3°C | 8.2°C | 66 mm | 82% | 1.2 m/s | 3.5 |
| 2022 | 21.4°C | 17.0°C | 12.6°C | 24.9°C | 6.5°C | 72 mm | 82% | 1 m/s | 4.3 |
| 2021 | 24.5°C | 19.9°C | 15.3°C | 28.9°C | 11.8°C | 24 mm | 81% | 0.8 m/s | 4.3 |
| 2020 | 23.2°C | 18.4°C | 13.6°C | 27.6°C | 8.6°C | 20 mm | 75% | 1.2 m/s | 4.4 |
| 2019 | 22.6°C | 18.1°C | 13.6°C | 24.9°C | 9.0°C | 15 mm | 79% | 1.1 m/s | 4.2 |
| 2018 | 23.9°C | 19.1°C | 14.4°C | 27.6°C | 10.6°C | 29 mm | 78% | 1 m/s | 4.3 |
| 2017 | 24.3°C | 20.1°C | 15.8°C | 28.1°C | 12.9°C | 25 mm | 78% | 1.3 m/s | 4.1 |
| 2016 | 23.7°C | 19.5°C | 15.3°C | 26.7°C | 11.0°C | 35 mm | 82% | 1.1 m/s | 3.9 |
| 2015 | 23.0°C | 18.3°C | 13.6°C | 26.3°C | 6.9°C | 15 mm | 77% | 1.1 m/s | 4.2 |
| 2014 | 19.9°C | 16.0°C | 12.1°C | 22.1°C | 6.7°C | 40 mm | 85% | 1 m/s | 4.4 |
| 2013 | 20.5°C | 17.4°C | 14.4°C | 23.0°C | 8.1°C | 131 mm | 88% | 1.3 m/s | 3.7 |
| 2012 | 20.1°C | 16.6°C | 13.1°C | 24.5°C | 6.7°C | 110 mm | 88% | 1 m/s | 3.9 |
| 2011 | 19.9°C | 16.1°C | 12.3°C | 21.9°C | 6.6°C | 30 mm | 86% | 1.1 m/s | 4.1 |
| 2010 | 21.8°C | 19.2°C | 16.6°C | 23.6°C | 14.7°C | 105 mm | 91% | 1.2 m/s | 3.1 |
| 2009 | 21.7°C | 17.2°C | 12.6°C | 24.6°C | 7.0°C | 21 mm | 80% | 1 m/s | 4.5 |
| 2008 | 20.9°C | 16.7°C | 12.5°C | 23.1°C | 6.2°C | 107 mm | 84% | 1 m/s | 4 |
| 2007 | 18.9°C | 14.7°C | 10.5°C | 21.2°C | 4.3°C | 48 mm | 85% | 1.1 m/s | 4.6 |
| 2006 | 20.0°C | 16.7°C | 13.5°C | 23.5°C | 8.2°C | 114 mm | 90% | 1.1 m/s | 4 |
| 2005 🌧️ | 20.7°C | 17.3°C | 13.8°C | 25.6°C | 7.9°C | 168 mm | 88% | 1.2 m/s | 3.9 |
| 2004 | 20.4°C | 16.8°C | 13.2°C | 22.8°C | 5.6°C | 70 mm | 87% | 1.1 m/s | 4.1 |
| 2003 | 20.4°C | 17.3°C | 14.1°C | 26.0°C | 9.4°C | 84 mm | 87% | 1.3 m/s | 3.8 |
| 2002 | 21.5°C | 17.0°C | 12.6°C | 24.5°C | 7.5°C | 28 mm | 79% | 1.1 m/s | 4 |
| 2001 | 21.1°C | 16.7°C | 12.3°C | 23.1°C | 6.9°C | 16 mm | 81% | 1 m/s | 4.5 |
| 2000 | 19.6°C | 15.5°C | 11.5°C | 23.4°C | 7.2°C | 19 mm | 84% | 1 m/s | 4.6 |
| 1999 | 19.8°C | 16.1°C | 12.4°C | 22.8°C | 9.2°C | 81 mm | 86% | 1 m/s | 4.2 |
| 1998 | 21.6°C | 18.2°C | 14.9°C | 25.3°C | 7.1°C | 83 mm | 88% | 1.1 m/s | 3.8 |
| 1997 | 19.7°C | 16.6°C | 13.6°C | 22.1°C | 10.1°C | 87 mm | 89% | 1.2 m/s | 3.8 |
| 1996 | 20.8°C | 16.2°C | 11.6°C | 26.8°C | 7.1°C | 82 mm | 81% | 0.9 m/s | 4.6 |
| 1995 | 21.5°C | 17.1°C | 12.6°C | 27.3°C | 8.2°C | 33 mm | 83% | 1 m/s | 4.5 |
| 1994 | 18.7°C | 15.6°C | 12.6°C | 22.1°C | 9.3°C | 166 mm | 89% | 1.1 m/s | 3.7 |
| 1993 | 21.0°C | 17.8°C | 14.6°C | 22.7°C | 11.5°C | 145 mm | 90% | 1 m/s | 3.8 |
| 1992 | 20.0°C | 16.3°C | 12.7°C | 22.7°C | 7.2°C | 92 mm | 86% | 1.2 m/s | 3.8 |
| 1991 | 21.3°C | 16.5°C | 11.7°C | 27.2°C | 7.7°C | 47 mm | 79% | 1 m/s | 4.3 |
| 1990 | 20.4°C | 17.0°C | 13.6°C | 23.3°C | 6.1°C | 50 mm | 89% | 1 m/s | 3.9 |
| 1989 | 20.3°C | 16.7°C | 13.2°C | 24.4°C | 6.3°C | 69 mm | 89% | 1 m/s | 4 |
| 1988 | 20.9°C | 17.7°C | 14.5°C | 24.2°C | 9.1°C | 108 mm | 89% | 1.1 m/s | 3.5 |
| 1987 | 19.3°C | 15.8°C | 12.2°C | 23.6°C | 8.3°C | 98 mm | 89% | 1 m/s | 4.2 |
| 1986 | 21.5°C | 18.2°C | 15.0°C | 23.9°C | 10.1°C | 39 mm | 89% | 1 m/s | 3.9 |
| 1985 ❄️ | 18.9°C | 14.7°C | 10.6°C | 20.6°C | 5.2°C | 41 mm | 85% | 1.1 m/s | 4.2 |
| 1984 | 20.8°C | 16.4°C | 12.1°C | 24.3°C | 3.2°C | 69 mm | 83% | 1 m/s | 3.2 |
| 1983 | 19.3°C | 15.7°C | 12.0°C | 23.2°C | 3.7°C | 45 mm | 87% | 1.1 m/s | — |
| 1982 | 19.4°C | 14.8°C | 10.3°C | 22.7°C | 5.7°C | 23 mm | 82% | 1 m/s | — |
| 1981 | 21.3°C | 18.1°C | 14.9°C | 23.9°C | 10.2°C | 116 mm | 89% | 1.1 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 21.2°C with lows near 13.3°C (mean 17.3°C), based on 45 years of NASA POWER data.
July averages 64 mm of rainfall in Atherton, one of the drier months. The wettest on record was 168 mm in 2005.
The hottest July reached 30.1°C in 2025. The coldest dipped to 3.2°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 3.2°C. Daytime highs moved from 19.9°C to 23.6°C and overnight lows from 12°C to 14.6°C over the same span.
July is one of the cooler months of the year in Atherton and one of the drier months, so plan for around 21.2°C daytime highs and 13.3°C at night.
Yes — July is the coldest month of the year in Atherton, averaging 17.3°C.
For July in Atherton, pack light layers you can adjust through the day, with typical highs of 21.2°C and lows of 13.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 84% — quite humid.
Average wind speed in July is 1.1 m/s. The windiest July on record averaged 1.3 m/s (2003).
The wettest July on record was 2005 with 168 mm. On average, July sees 64 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 Atherton 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.
