July is one of the cooler months of the year in Mount Barker, with average highs near 14.1°C and lows around 6.3°C (mean 10.2°C). It is a relatively wet time of year, averaging 92 mm of rainfall and 86% relative humidity across the period.
July is one of the cooler months of the year in Mount Barker. Across 45 years of records, the warmest July in Mount Barker was 2024 — when the month averaged 11.5°C — while the coldest was 1990 at 8.8°C. Typical July days reach 14.1°C with nights near 6.3°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Mount Barker, averaging 92 mm of rainfall. The wettest July on record was 2025 with 166 mm, while the driest was 2005 at 42 mm.
Relative humidity in Mount Barker during July averages 86%. The most humid July was 2021 at 90%, and the least humid was 1997 at 80%.
July receives about 2.5 kWh/m²/day of solar energy in Mount Barker. The sunniest July was 2005 at 2.8 kWh/m²/day, and the cloudiest was 1984 at 2.1.
Average wind speed in Mount Barker during July is 3.4 m/s. The windiest July was 1996 at 4.5 m/s, while the calmest were 2001 and 2012 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.9°C | 10.0°C | 10.2°C | 10.4°C | 10.7°C | +0.8°C |
| Avg High | 13.8°C | 13.9°C | 14.2°C | 14.3°C | 14.4°C | +0.6°C |
| Avg Low | 5.9°C | 6.1°C | 6.2°C | 6.5°C | 6.9°C | +1°C |
| Avg Rain | 85 mm | 90 mm | 81 mm | 100 mm | 111 mm | +26 mm |
July temperatures in Mount Barker have risen by about 0.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 0.3°C (2005) to a record high of 21°C (1987).
Rainfall in July is a relatively wet time of year, averaging 92 mm, with a wettest year of 166 mm.
A quieter season to visit Mount Barker
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Mount Barker. That said, July — with days averaging 14.1°C and nights around 6.3°C (mean 10.2°C) and higher rainfall (92 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 🌧️ | 13.5°C | 10.1°C | 6.6°C | 18.4°C | 3.7°C | 166 mm | 87% | 3.6 m/s | 2.6 |
| 2024 🔥 | 15.3°C | 11.5°C | 7.6°C | 19.2°C | 4.9°C | 114 mm | 84% | 3.7 m/s | 2.6 |
| 2023 | 14.1°C | 10.5°C | 6.9°C | 17.0°C | 0.7°C | 87 mm | 88% | 4 m/s | 2.6 |
| 2022 | 15.1°C | 10.7°C | 6.3°C | 18.2°C | 2.5°C | 76 mm | 83% | 3.1 m/s | 2.5 |
| 2021 | 13.3°C | 10.4°C | 7.4°C | 16.6°C | 4.6°C | 144 mm | 90% | 4.4 m/s | 2.4 |
| 2020 | 14.8°C | 10.8°C | 6.7°C | 19.8°C | 1.7°C | 80 mm | 86% | 3.2 m/s | 2.6 |
| 2019 | 15.0°C | 10.9°C | 6.8°C | 19.2°C | 4.4°C | 80 mm | 87% | 2.8 m/s | 2.5 |
| 2018 | 15.1°C | 11.0°C | 6.9°C | 18.8°C | 3.3°C | 106 mm | 83% | 3.8 m/s | 2.5 |
| 2017 | 13.5°C | 10.1°C | 6.6°C | 17.7°C | 4.1°C | 145 mm | 86% | 3.9 m/s | 2.4 |
| 2016 | 13.3°C | 9.5°C | 5.6°C | 17.9°C | 1.1°C | 116 mm | 87% | 3.4 m/s | 2.6 |
| 2015 | 14.9°C | 10.9°C | 6.8°C | 19.5°C | 2.6°C | 106 mm | 86% | 2.8 m/s | 2.4 |
| 2014 | 14.1°C | 10.3°C | 6.5°C | 19.9°C | 1.8°C | 116 mm | 87% | 3.7 m/s | 2.4 |
| 2013 | 14.5°C | 10.5°C | 6.6°C | 18.6°C | 1.7°C | 86 mm | 85% | 3.2 m/s | 2.5 |
| 2012 | 14.5°C | 10.4°C | 6.3°C | 18.6°C | 1.6°C | 62 mm | 84% | 2.6 m/s | 2.6 |
| 2011 | 14.0°C | 10.4°C | 6.8°C | 17.7°C | 1.8°C | 97 mm | 88% | 3 m/s | 2.4 |
| 2010 | 14.2°C | 10.0°C | 5.8°C | 17.3°C | 2.3°C | 90 mm | 85% | 3 m/s | 2.6 |
| 2009 | 13.6°C | 10.1°C | 6.6°C | 16.7°C | 2.5°C | 89 mm | 88% | 3.2 m/s | 2.6 |
| 2008 | 13.2°C | 9.6°C | 5.9°C | 17.0°C | 3.0°C | 117 mm | 87% | 3.3 m/s | 2.3 |
| 2007 | 15.3°C | 11.3°C | 7.3°C | 18.7°C | 3.3°C | 89 mm | 85% | 4.1 m/s | 2.4 |
| 2006 | 14.6°C | 10.2°C | 5.8°C | 20.2°C | 2.3°C | 79 mm | 83% | 3.1 m/s | 2.7 |
| 2005 | 14.0°C | 10.0°C | 5.9°C | 18.4°C | 0.3°C | 42 mm | 88% | 3.2 m/s | 2.8 |
| 2004 | 14.1°C | 9.9°C | 5.7°C | 18.1°C | 2.0°C | 66 mm | 85% | 2.8 m/s | 2.5 |
| 2003 | 14.2°C | 10.4°C | 6.7°C | 17.6°C | 2.8°C | 87 mm | 87% | 3.8 m/s | 2.4 |
| 2002 | 14.4°C | 10.3°C | 6.2°C | 19.1°C | 1.1°C | 79 mm | 84% | 4.1 m/s | 2.4 |
| 2001 | 15.0°C | 10.4°C | 5.9°C | 20.4°C | 2.1°C | 54 mm | 80% | 2.6 m/s | 2.4 |
| 2000 | 13.5°C | 9.8°C | 6.1°C | 17.7°C | 1.0°C | 109 mm | 87% | 4.3 m/s | 2.5 |
| 1999 | 14.9°C | 10.6°C | 6.2°C | 19.3°C | 2.1°C | 66 mm | 84% | 3.3 m/s | 2.6 |
| 1998 | 13.1°C | 9.2°C | 5.3°C | 17.1°C | 1.3°C | 74 mm | 88% | 2.8 m/s | 2.4 |
| 1997 | 14.8°C | 9.8°C | 4.8°C | 19.5°C | 1.3°C | 73 mm | 80% | 2.9 m/s | 2.7 |
| 1996 | 14.1°C | 10.5°C | 6.9°C | 18.5°C | 1.9°C | 115 mm | 85% | 4.5 m/s | 2.4 |
| 1995 | 13.8°C | 10.3°C | 6.7°C | 18.5°C | 4.0°C | 87 mm | 88% | 3.6 m/s | 2.5 |
| 1994 | 14.2°C | 10.4°C | 6.6°C | 20.2°C | 1.9°C | 49 mm | 87% | 3.1 m/s | 2.6 |
| 1993 | 13.1°C | 9.4°C | 5.8°C | 17.3°C | 2.1°C | 90 mm | 89% | 3.6 m/s | 2.5 |
| 1992 | 14.6°C | 10.7°C | 6.8°C | 18.1°C | 4.1°C | 59 mm | 88% | 3.3 m/s | 2.5 |
| 1991 | 14.0°C | 10.2°C | 6.5°C | 19.0°C | 0.8°C | 159 mm | 89% | 3.5 m/s | 2.4 |
| 1990 ❄️ | 12.6°C | 8.8°C | 5.1°C | 17.2°C | 0.7°C | 130 mm | 87% | 3.5 m/s | 2.7 |
| 1989 | 13.3°C | 9.6°C | 5.9°C | 17.1°C | 2.2°C | 93 mm | 87% | 3 m/s | 2.4 |
| 1988 | 13.4°C | 9.4°C | 5.4°C | 17.6°C | 1.3°C | 94 mm | 87% | 3.3 m/s | 2.4 |
| 1987 | 14.7°C | 10.2°C | 5.6°C | 21.0°C | 0.6°C | 83 mm | 82% | 3.3 m/s | 2.5 |
| 1986 | 12.8°C | 9.1°C | 5.4°C | 15.8°C | 1.3°C | 99 mm | 85% | 3.3 m/s | 2.7 |
| 1985 | 14.9°C | 10.7°C | 6.5°C | 17.7°C | 1.9°C | 91 mm | 83% | 2.9 m/s | 2.5 |
| 1984 | 13.4°C | 9.8°C | 6.1°C | 17.3°C | 2.3°C | 82 mm | 87% | 3.3 m/s | 2.1 |
| 1983 | 14.3°C | 10.3°C | 6.2°C | 17.7°C | 3.4°C | 69 mm | 85% | 3 m/s | — |
| 1982 | 14.4°C | 9.9°C | 5.3°C | 18.2°C | 1.0°C | 61 mm | 82% | 3.4 m/s | — |
| 1981 | 13.4°C | 10.0°C | 6.5°C | 17.8°C | 3.5°C | 93 mm | 88% | 3.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 14.1°C with lows near 6.3°C (mean 10.2°C), based on 45 years of NASA POWER data.
July averages 92 mm of rainfall in Mount Barker, a relatively wet time of year. The wettest on record was 166 mm in 2025.
The hottest July reached 21°C in 1987. The coldest dipped to 0.3°C in 2005.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.5°C. Daytime highs moved from 14.1°C to 14.3°C and overnight lows from 6.1°C to 7°C over the same span.
July is one of the cooler months of the year in Mount Barker and a relatively wet time of year, so plan for around 14.1°C daytime highs and 6.3°C at night.
Yes — July is the coldest month of the year in Mount Barker, averaging 10.2°C.
For July in Mount Barker, pack warm layers and a jacket for chilly mornings, with typical highs of 14.1°C and lows of 6.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 86% — quite humid.
Average wind speed in July is 3.4 m/s. The windiest July on record averaged 4.5 m/s (1996).
The wettest July on record was 2025 with 166 mm. On average, July sees 92 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 Mount Barker 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.
