July is one of the cooler months of the year in Port Augusta, with average highs near 17°C and lows around 5.8°C (mean 11.4°C). It is about average for rainfall, averaging 24 mm of rainfall and 69% relative humidity across the period.
July is one of the cooler months of the year in Port Augusta. Across 45 years of records, the warmest July in Port Augusta was 2019 — when the month averaged 13°C — while the coldest was 1989 at 9.9°C. Typical July days reach 17°C with nights near 5.8°C. The long-term trend is warming, about 0.2°C per decade.
July is about average for rainfall in Port Augusta, averaging 24 mm of rainfall. The wettest July on record was 1996 with 58 mm, while the driest was 1997 at 3 mm.
Relative humidity in Port Augusta during July averages 69%. The most humid July was 1989 at 79%, and the least humid was 2018 at 60%.
July receives about 3 kWh/m²/day of solar energy in Port Augusta. The sunniest July was 1994 at 3.5 kWh/m²/day, and the cloudiest was 1984 at 2.1.
Average wind speed in Port Augusta during July is 2.9 m/s. The windiest Julys were 1995 and 1996 at 3.5 m/s, while the calmest was 2001 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.7°C | 11.3°C | 11.7°C | 11.7°C | 11.7°C | +1°C |
| Avg High | 16.2°C | 16.9°C | 17.3°C | 17.3°C | 17.4°C | +1.2°C |
| Avg Low | 5.3°C | 5.8°C | 6.0°C | 6.0°C | 5.9°C | +0.6°C |
| Avg Rain | 32 mm | 27 mm | 23 mm | 20 mm | 18 mm | -13 mm |
July temperatures in Port Augusta have risen by about 1.1°C between 1981–1985 and 2021–2025.
July has ranged from a record low of -0.1°C (1995) to a record high of 27.5°C (2017).
Rainfall in July is about average for rainfall, averaging 24 mm, with a wettest year of 58 mm.
A quieter season to visit Port Augusta
If your dates are flexible, the more temperate months of November and March tend to be the most comfortable for visiting Port Augusta. That said, July — with days averaging 17°C and nights around 5.8°C (mean 11.4°C) and low rainfall (24 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 | 16.8°C | 11.5°C | 6.2°C | 21.6°C | 3.2°C | 29 mm | 68% | 3.4 m/s | 2.9 |
| 2024 | 17.2°C | 11.8°C | 6.3°C | 22.2°C | 1.0°C | 17 mm | 68% | 3.1 m/s | 3.1 |
| 2023 | 18.1°C | 12.1°C | 6.2°C | 22.7°C | 3.1°C | 5 mm | 68% | 2.8 m/s | 3.1 |
| 2022 | 17.0°C | 11.2°C | 5.3°C | 23.6°C | 1.9°C | 4 mm | 69% | 2.7 m/s | 3 |
| 2021 | 17.5°C | 11.8°C | 6.1°C | 24.3°C | 3.5°C | 42 mm | 68% | 3.4 m/s | 2.9 |
| 2020 | 17.8°C | 11.5°C | 5.3°C | 23.0°C | 1.8°C | 13 mm | 69% | 2.3 m/s | 3.3 |
| 2019 🔥 | 18.9°C | 13.0°C | 7.0°C | 23.5°C | 3.8°C | 3 mm | 67% | 2.8 m/s | 3.2 |
| 2018 | 18.4°C | 12.1°C | 5.9°C | 22.7°C | 2.4°C | 7 mm | 60% | 3.2 m/s | 3.3 |
| 2017 | 18.8°C | 12.6°C | 6.3°C | 27.5°C | 2.9°C | 7 mm | 61% | 3.3 m/s | 3.1 |
| 2016 | 17.4°C | 11.9°C | 6.4°C | 24.9°C | 1.3°C | 21 mm | 68% | 3 m/s | 3 |
| 2015 | 15.9°C | 10.4°C | 4.9°C | 20.0°C | 0.0°C | 13 mm | 73% | 2.9 m/s | 2.9 |
| 2014 | 16.6°C | 11.2°C | 5.8°C | 21.2°C | 2.1°C | 20 mm | 73% | 3.2 m/s | 3 |
| 2013 | 17.2°C | 11.9°C | 6.6°C | 22.1°C | 3.8°C | 51 mm | 76% | 2.9 m/s | 3 |
| 2012 | 16.4°C | 10.7°C | 5.1°C | 19.8°C | 1.7°C | 32 mm | 74% | 2.4 m/s | 3 |
| 2011 | 17.3°C | 11.9°C | 6.5°C | 23.0°C | 2.0°C | 27 mm | 71% | 2.7 m/s | 2.9 |
| 2010 | 16.5°C | 10.9°C | 5.3°C | 20.2°C | 2.6°C | 21 mm | 72% | 2.5 m/s | 3 |
| 2009 | 17.4°C | 12.2°C | 6.9°C | 22.4°C | 2.6°C | 36 mm | 70% | 3.2 m/s | 2.9 |
| 2008 | 16.7°C | 11.1°C | 5.5°C | 22.3°C | 0.9°C | 20 mm | 68% | 3.3 m/s | 2.9 |
| 2007 | 17.5°C | 11.8°C | 6.1°C | 24.1°C | 1.7°C | 15 mm | 68% | 2.9 m/s | 3.1 |
| 2006 | 16.7°C | 11.2°C | 5.6°C | 22.3°C | 2.6°C | 34 mm | 70% | 3 m/s | 2.7 |
| 2005 | 17.6°C | 11.9°C | 6.2°C | 22.1°C | 1.1°C | 25 mm | 72% | 2.5 m/s | 2.9 |
| 2004 | 16.6°C | 11.1°C | 5.6°C | 21.8°C | 1.9°C | 27 mm | 72% | 2.7 m/s | 2.8 |
| 2003 | 17.9°C | 11.7°C | 5.6°C | 22.3°C | 2.2°C | 11 mm | 65% | 3 m/s | 3.3 |
| 2002 | 18.5°C | 12.1°C | 5.6°C | 25.5°C | 1.4°C | 18 mm | 63% | 3.3 m/s | 3.1 |
| 2001 | 16.9°C | 11.5°C | 6.1°C | 22.5°C | 3.8°C | 24 mm | 75% | 2.2 m/s | 2.9 |
| 2000 | 17.4°C | 12.0°C | 6.5°C | 23.5°C | 3.8°C | 21 mm | 66% | 3.1 m/s | 3.1 |
| 1999 | 18.1°C | 12.1°C | 6.2°C | 22.0°C | 2.4°C | 11 mm | 68% | 2.7 m/s | 2.9 |
| 1998 | 15.4°C | 10.5°C | 5.5°C | 19.8°C | 3.0°C | 39 mm | 73% | 3 m/s | 2.7 |
| 1997 | 16.5°C | 10.2°C | 3.9°C | 19.2°C | 1.4°C | 3 mm | 66% | 2.4 m/s | 3.2 |
| 1996 🌧️ | 16.8°C | 11.7°C | 6.7°C | 23.5°C | 3.2°C | 58 mm | 75% | 3.5 m/s | 2.8 |
| 1995 | 16.0°C | 11.0°C | 5.9°C | 19.5°C | -0.1°C | 49 mm | 73% | 3.5 m/s | 2.7 |
| 1994 | 18.0°C | 11.5°C | 5.1°C | 22.5°C | 2.3°C | 18 mm | 64% | 2.5 m/s | 3.5 |
| 1993 | 16.9°C | 11.7°C | 6.5°C | 23.3°C | 3.3°C | 29 mm | 69% | 3 m/s | 2.9 |
| 1992 | 17.8°C | 11.8°C | 5.8°C | 23.4°C | 4.0°C | 7 mm | 67% | 2.8 m/s | 3.3 |
| 1991 | 17.1°C | 11.6°C | 6.2°C | 22.0°C | 3.1°C | 29 mm | 72% | 2.7 m/s | 2.9 |
| 1990 | 16.4°C | 11.3°C | 6.2°C | 21.5°C | 3.2°C | 28 mm | 72% | 3.2 m/s | 3.1 |
| 1989 ❄️ | 14.5°C | 9.9°C | 5.2°C | 18.5°C | 2.2°C | 56 mm | 79% | 3 m/s | 3 |
| 1988 | 17.6°C | 12.1°C | 6.5°C | 21.3°C | 3.0°C | 14 mm | 72% | 3.1 m/s | 3 |
| 1987 | 16.7°C | 11.2°C | 5.7°C | 20.7°C | 2.0°C | 26 mm | 69% | 3 m/s | 3.1 |
| 1986 | 15.3°C | 10.5°C | 5.6°C | 19.6°C | 1.4°C | 57 mm | 72% | 3.2 m/s | 2.9 |
| 1985 | 17.1°C | 11.3°C | 5.5°C | 24.8°C | 2.7°C | 13 mm | 64% | 2.8 m/s | 3 |
| 1984 | 15.3°C | 10.3°C | 5.3°C | 19.1°C | 2.0°C | 31 mm | 73% | 2.8 m/s | 2.1 |
| 1983 | 15.6°C | 10.3°C | 5.1°C | 19.4°C | 0.8°C | 48 mm | 70% | 3.1 m/s | — |
| 1982 | 16.5°C | 10.1°C | 3.8°C | 19.9°C | 0.5°C | 4 mm | 64% | 2.5 m/s | — |
| 1981 | 16.8°C | 11.0°C | 5.3°C | 21.5°C | 2.5°C | 38 mm | 69% | 3.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 17°C with lows near 5.8°C (mean 11.4°C), based on 45 years of NASA POWER data.
July averages 24 mm of rainfall in Port Augusta, about average for rainfall. The wettest on record was 58 mm in 1996.
The hottest July reached 27.5°C in 2017. The coldest dipped to -0.1°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.1°C. Daytime highs moved from 16.3°C to 17.3°C and overnight lows from 5°C to 6°C over the same span.
July is one of the cooler months of the year in Port Augusta and about average for rainfall, so plan for around 17°C daytime highs and 5.8°C at night.
Yes — July is the coldest month of the year in Port Augusta, averaging 11.4°C.
For July in Port Augusta, pack warm layers and a jacket for chilly mornings, with typical highs of 17°C and lows of 5.8°C.
Relative humidity in July averages 69% — moderately humid.
Average wind speed in July is 2.9 m/s. The windiest July on record averaged 3.5 m/s (1995).
The wettest July on record was 1996 with 58 mm. On average, July sees 24 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 Port Augusta 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.
