July is one of the cooler months of the year in Mount Gambier, with average highs near 13.2°C and lows around 8.9°C (mean 11.1°C). It is a relatively wet time of year, averaging 99 mm of rainfall and 81% relative humidity across the period.
July is one of the cooler months of the year in Mount Gambier. Across 45 years of records, the warmest July in Mount Gambier was 2023 — when the month averaged 12°C — while the coldest was 1982 at 10.1°C. Typical July days reach 13.2°C with nights near 8.9°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Mount Gambier, averaging 99 mm of rainfall. The wettest July on record was 2013 with 166 mm, while the driest was 1997 at 47 mm.
Relative humidity in Mount Gambier during July averages 81%. The most humid July was 1987 at 85%, and the least humid was 1985 at 76%.
July receives about 2.1 kWh/m²/day of solar energy in Mount Gambier. The sunniest Julys were 1985, 2020 and 2024 at 2.3 kWh/m²/day, and the cloudiest was 1984 at 1.6.
Average wind speed in Mount Gambier during July is 4.3 m/s. The windiest July was 2018 at 5.2 m/s, while the calmest was 2020 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.6°C | 11.0°C | 11.2°C | 11.3°C | 11.2°C | +0.6°C |
| Avg High | 12.7°C | 13.1°C | 13.4°C | 13.4°C | 13.5°C | +0.8°C |
| Avg Low | 8.4°C | 8.8°C | 9.0°C | 9.3°C | 9.0°C | +0.6°C |
| Avg Rain | 110 mm | 98 mm | 102 mm | 98 mm | 80 mm | -30 mm |
July temperatures in Mount Gambier have risen by about 0.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 2.6°C (1984) to a record high of 18°C (2019).
Rainfall in July is a relatively wet time of year, averaging 99 mm, with a wettest year of 166 mm.
A quieter season to visit Mount Gambier
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Mount Gambier. That said, July — with days averaging 13.2°C and nights around 8.9°C (mean 11.1°C) and higher rainfall (99 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 | 13.6°C | 11.6°C | 9.5°C | 16.3°C | 6.5°C | 101 mm | 77% | 4.4 m/s | 2.1 |
| 2024 | 13.4°C | 11.0°C | 8.7°C | 16.6°C | 3.9°C | 77 mm | 80% | 4.3 m/s | 2.3 |
| 2023 🔥 | 14.0°C | 12.0°C | 10.0°C | 17.0°C | 6.1°C | 60 mm | 81% | 4.7 m/s | 2.1 |
| 2022 | 13.3°C | 10.9°C | 8.6°C | 17.5°C | 4.3°C | 55 mm | 80% | 3.8 m/s | 2.1 |
| 2021 | 13.2°C | 11.1°C | 8.9°C | 16.5°C | 6.2°C | 139 mm | 81% | 4.8 m/s | 2 |
| 2020 | 13.2°C | 10.7°C | 8.1°C | 16.6°C | 4.4°C | 48 mm | 82% | 3.1 m/s | 2.3 |
| 2019 | 14.0°C | 11.9°C | 9.8°C | 18.0°C | 7.1°C | 78 mm | 79% | 4.7 m/s | 2.1 |
| 2018 | 13.6°C | 11.4°C | 9.2°C | 17.2°C | 3.2°C | 78 mm | 77% | 5.2 m/s | 2.1 |
| 2017 | 13.7°C | 11.4°C | 9.2°C | 16.8°C | 4.4°C | 87 mm | 78% | 4.4 m/s | 2.2 |
| 2016 | 13.5°C | 11.6°C | 9.6°C | 17.8°C | 5.0°C | 113 mm | 81% | 4.8 m/s | 1.9 |
| 2015 | 12.5°C | 10.4°C | 8.2°C | 16.1°C | 3.6°C | 74 mm | 79% | 4.6 m/s | 2 |
| 2014 | 13.1°C | 11.2°C | 9.2°C | 15.7°C | 5.6°C | 115 mm | 83% | 4.6 m/s | 1.9 |
| 2013 🌧️ | 13.7°C | 11.7°C | 9.7°C | 16.7°C | 5.7°C | 166 mm | 82% | 4.3 m/s | 1.9 |
| 2012 | 13.2°C | 11.2°C | 9.3°C | 15.3°C | 4.4°C | 80 mm | 83% | 3.5 m/s | 2.1 |
| 2011 | 13.2°C | 11.2°C | 9.2°C | 16.5°C | 5.0°C | 91 mm | 81% | 4.6 m/s | 2.1 |
| 2010 | 13.6°C | 11.4°C | 9.1°C | 15.9°C | 6.0°C | 102 mm | 82% | 3.4 m/s | 2.2 |
| 2009 | 13.3°C | 11.3°C | 9.3°C | 16.4°C | 4.4°C | 133 mm | 82% | 4.5 m/s | 2 |
| 2008 | 13.0°C | 10.5°C | 8.1°C | 16.1°C | 4.0°C | 99 mm | 79% | 4.4 m/s | 2 |
| 2007 | 13.1°C | 11.0°C | 8.9°C | 16.3°C | 5.0°C | 118 mm | 81% | 4.2 m/s | 2.2 |
| 2006 | 12.9°C | 10.7°C | 8.6°C | 15.1°C | 3.9°C | 75 mm | 80% | 4.2 m/s | 2 |
| 2005 | 13.8°C | 11.9°C | 10.1°C | 16.8°C | 5.3°C | 74 mm | 81% | 4.1 m/s | 2.1 |
| 2004 | 12.5°C | 10.8°C | 9.1°C | 15.5°C | 7.0°C | 122 mm | 82% | 4.7 m/s | 2.1 |
| 2003 | 13.5°C | 11.1°C | 8.6°C | 16.0°C | 6.1°C | 91 mm | 81% | 4.4 m/s | 2.1 |
| 2002 | 14.1°C | 11.6°C | 9.0°C | 16.7°C | 5.5°C | 111 mm | 79% | 5.1 m/s | 1.9 |
| 2001 | 14.0°C | 11.6°C | 9.1°C | 16.1°C | 5.9°C | 51 mm | 83% | 3.4 m/s | 2 |
| 2000 | 13.4°C | 11.0°C | 8.7°C | 16.6°C | 5.0°C | 141 mm | 83% | 4.4 m/s | 2.1 |
| 1999 | 14.3°C | 11.8°C | 9.3°C | 16.6°C | 4.9°C | 59 mm | 80% | 4 m/s | 2 |
| 1998 | 12.8°C | 10.4°C | 8.1°C | 15.3°C | 4.4°C | 99 mm | 80% | 3.9 m/s | 2.1 |
| 1997 | 12.7°C | 10.5°C | 8.2°C | 16.0°C | 4.4°C | 47 mm | 78% | 3.7 m/s | 2.1 |
| 1996 | 12.6°C | 10.6°C | 8.7°C | 15.9°C | 5.8°C | 155 mm | 84% | 4.2 m/s | 2 |
| 1995 | 12.3°C | 10.4°C | 8.5°C | 14.4°C | 5.8°C | 134 mm | 82% | 4.4 m/s | 2 |
| 1994 | 13.7°C | 11.3°C | 8.9°C | 17.6°C | 3.8°C | 101 mm | 80% | 4.3 m/s | 2.2 |
| 1993 | 13.5°C | 11.1°C | 8.7°C | 17.3°C | 6.1°C | 88 mm | 82% | 4.3 m/s | 2.1 |
| 1992 | 13.3°C | 11.2°C | 9.0°C | 15.9°C | 5.9°C | 105 mm | 82% | 4.7 m/s | 2.2 |
| 1991 | 13.0°C | 11.1°C | 9.1°C | 15.3°C | 5.8°C | 75 mm | 82% | 3.8 m/s | 2.1 |
| 1990 | 13.0°C | 11.1°C | 9.3°C | 16.8°C | 7.2°C | 116 mm | 82% | 4.7 m/s | 2.1 |
| 1989 | 12.2°C | 10.3°C | 8.5°C | 14.7°C | 4.4°C | 115 mm | 84% | 4.1 m/s | 2.1 |
| 1988 | 13.8°C | 11.8°C | 9.8°C | 16.4°C | 6.1°C | 123 mm | 84% | 4.3 m/s | 2.1 |
| 1987 | 12.8°C | 10.3°C | 7.7°C | 16.0°C | 4.8°C | 96 mm | 85% | 4 m/s | 2.2 |
| 1986 | 12.2°C | 10.3°C | 8.3°C | 14.6°C | 4.3°C | 144 mm | 83% | 4.2 m/s | 2.1 |
| 1985 | 12.9°C | 10.8°C | 8.7°C | 17.3°C | 3.0°C | 80 mm | 76% | 4.3 m/s | 2.3 |
| 1984 | 12.2°C | 10.2°C | 8.2°C | 15.1°C | 2.6°C | 131 mm | 83% | 4 m/s | 1.6 |
| 1983 | 12.4°C | 10.3°C | 8.2°C | 14.5°C | 3.6°C | 95 mm | 83% | 3.7 m/s | — |
| 1982 ❄️ | 12.4°C | 10.1°C | 7.7°C | 15.5°C | 3.2°C | 60 mm | 79% | 3.6 m/s | — |
| 1981 | 13.1°C | 10.9°C | 8.6°C | 15.7°C | 5.2°C | 146 mm | 83% | 4.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 13.2°C with lows near 8.9°C (mean 11.1°C), based on 45 years of NASA POWER data.
July averages 99 mm of rainfall in Mount Gambier, a relatively wet time of year. The wettest on record was 166 mm in 2013.
The hottest July reached 18°C in 2019. The coldest dipped to 2.6°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.8°C. Daytime highs moved from 12.6°C to 13.5°C and overnight lows from 8.3°C to 9.1°C over the same span.
July is one of the cooler months of the year in Mount Gambier and a relatively wet time of year, so plan for around 13.2°C daytime highs and 8.9°C at night.
Yes — July is the coldest month of the year in Mount Gambier, averaging 11.1°C.
For July in Mount Gambier, pack light layers you can adjust through the day, with typical highs of 13.2°C and lows of 8.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 81% — quite humid.
Average wind speed in July is 4.3 m/s. The windiest July on record averaged 5.2 m/s (2018).
The wettest July on record was 2013 with 166 mm. On average, July sees 99 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 Gambier 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.
