June is one of the cooler months of the year in Mount Barker, with average highs near 15.4°C and lows around 7.3°C (mean 11.4°C). It is a relatively wet time of year, averaging 81 mm of rainfall and 83% relative humidity across the period.
June is one of the cooler months of the year in Mount Barker. Across 45 years of records, the warmest June in Mount Barker was 1985 — when the month averaged 12.7°C — while the coldest was 1981 at 9.1°C. Typical June days reach 15.4°C with nights near 7.3°C. The long-term trend is warming, about 0.2°C per decade.
June is a relatively wet time of year in Mount Barker, averaging 81 mm of rainfall. The wettest June on record was 2009 with 153 mm, while the driest was 2017 at 34 mm.
Relative humidity in Mount Barker during June averages 83%. The most humid June was 1988 at 89%, and the least humid was 2017 at 76%.
June receives about 2.3 kWh/m²/day of solar energy in Mount Barker. The sunniest June was 2008 at 2.6 kWh/m²/day, and the cloudiest were 2002, 2009 and 2022, among others at 2.1.
Average wind speed in Mount Barker during June is 3.3 m/s. The windiest June was 1981 at 4.2 m/s, while the calmest were 2010 and 2017 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.2°C | 11.0°C | 11.3°C | 11.6°C | 11.8°C | +0.6°C |
| Avg High | 15.6°C | 14.9°C | 15.5°C | 15.8°C | 15.4°C | -0.2°C |
| Avg Low | 6.9°C | 7.0°C | 7.2°C | 7.4°C | 8.1°C | +1.2°C |
| Avg Rain | 81 mm | 80 mm | 80 mm | 76 mm | 93 mm | +12 mm |
June temperatures in Mount Barker have risen by about 0.5°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -0.1°C (1981) to a record high of 23.1°C (2000).
Rainfall in June is a relatively wet time of year, averaging 81 mm, with a wettest year of 153 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, June — with days averaging 15.4°C and nights around 7.3°C (mean 11.4°C) and higher rainfall (81 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 | 16.4°C | 12.6°C | 8.9°C | 21.9°C | 4.4°C | 95 mm | 82% | 3.1 m/s | 2.2 |
| 2024 | 16.2°C | 12.2°C | 8.2°C | 22.4°C | 4.1°C | 89 mm | 82% | 2.9 m/s | 2.3 |
| 2023 | 13.2°C | 10.0°C | 6.8°C | 18.1°C | 2.9°C | 152 mm | 87% | 3.2 m/s | 2.3 |
| 2022 | 15.5°C | 12.0°C | 8.5°C | 20.0°C | 4.7°C | 69 mm | 86% | 3.4 m/s | 2.1 |
| 2021 | 14.5°C | 11.1°C | 7.7°C | 19.1°C | 4.3°C | 95 mm | 86% | 3.3 m/s | 2.3 |
| 2020 | 16.7°C | 12.6°C | 8.4°C | 20.4°C | 2.7°C | 55 mm | 82% | 3.4 m/s | 2.4 |
| 2019 | 15.9°C | 11.6°C | 7.3°C | 22.9°C | 4.6°C | 104 mm | 79% | 3.7 m/s | 2.3 |
| 2018 | 16.1°C | 11.6°C | 7.0°C | 23.1°C | 3.2°C | 67 mm | 81% | 3 m/s | 2.3 |
| 2017 | 17.3°C | 12.4°C | 7.5°C | 22.1°C | 3.0°C | 34 mm | 76% | 2.5 m/s | 2.4 |
| 2016 | 14.3°C | 10.5°C | 6.7°C | 20.0°C | 2.5°C | 102 mm | 87% | 3.2 m/s | 2.3 |
| 2015 | 16.1°C | 12.0°C | 7.9°C | 19.7°C | 2.6°C | 69 mm | 85% | 3 m/s | 2.4 |
| 2014 | 16.0°C | 11.9°C | 7.7°C | 20.8°C | 4.1°C | 56 mm | 81% | 3.2 m/s | 2.2 |
| 2013 | 15.9°C | 11.6°C | 7.3°C | 18.5°C | 3.6°C | 45 mm | 85% | 2.8 m/s | 2.5 |
| 2012 | 15.2°C | 11.3°C | 7.3°C | 19.7°C | 3.4°C | 145 mm | 84% | 3.5 m/s | 2.2 |
| 2011 | 15.8°C | 12.1°C | 8.4°C | 19.3°C | 5.3°C | 82 mm | 82% | 3.6 m/s | 2.4 |
| 2010 | 15.6°C | 11.1°C | 6.7°C | 19.6°C | 2.5°C | 58 mm | 81% | 2.5 m/s | 2.4 |
| 2009 🌧️ | 14.6°C | 11.1°C | 7.7°C | 20.9°C | 5.0°C | 153 mm | 87% | 3.7 m/s | 2.1 |
| 2008 | 15.6°C | 11.1°C | 6.6°C | 17.9°C | 3.9°C | 65 mm | 83% | 3.2 m/s | 2.6 |
| 2007 | 15.9°C | 11.7°C | 7.4°C | 20.4°C | 4.4°C | 61 mm | 82% | 3.3 m/s | 2.5 |
| 2006 | 16.1°C | 11.0°C | 5.9°C | 19.7°C | 1.9°C | 43 mm | 77% | 2.7 m/s | 2.5 |
| 2005 | 13.6°C | 10.3°C | 7.1°C | 18.3°C | 4.2°C | 129 mm | 89% | 3.5 m/s | 2.2 |
| 2004 | 15.8°C | 11.9°C | 8.0°C | 20.0°C | 5.4°C | 92 mm | 84% | 3.8 m/s | 2.2 |
| 2003 | 15.0°C | 11.1°C | 7.2°C | 19.2°C | 3.4°C | 65 mm | 81% | 3.3 m/s | 2.4 |
| 2002 | 15.4°C | 11.5°C | 7.7°C | 20.4°C | 5.1°C | 70 mm | 80% | 3.8 m/s | 2.1 |
| 2001 | 16.1°C | 11.9°C | 7.6°C | 20.4°C | 3.8°C | 57 mm | 83% | 2.9 m/s | 2.2 |
| 2000 | 16.5°C | 11.9°C | 7.2°C | 23.1°C | 4.2°C | 61 mm | 77% | 3.3 m/s | 2.4 |
| 1999 | 15.1°C | 11.2°C | 7.2°C | 19.3°C | 2.8°C | 95 mm | 85% | 3.6 m/s | 2.3 |
| 1998 | 14.8°C | 10.5°C | 6.2°C | 22.3°C | 2.5°C | 105 mm | 83% | 3.6 m/s | 2.1 |
| 1997 | 15.9°C | 11.9°C | 7.9°C | 21.0°C | 4.7°C | 71 mm | 86% | 3.3 m/s | 2.2 |
| 1996 | 15.8°C | 11.7°C | 7.6°C | 20.4°C | 3.5°C | 76 mm | 81% | 3.5 m/s | 2.3 |
| 1995 | 14.5°C | 10.7°C | 6.9°C | 19.0°C | 4.2°C | 76 mm | 85% | 3.6 m/s | 2.1 |
| 1994 | 14.7°C | 10.7°C | 6.7°C | 18.6°C | 3.6°C | 68 mm | 85% | 3.3 m/s | 2.5 |
| 1993 | 13.8°C | 10.2°C | 6.7°C | 17.0°C | 3.9°C | 61 mm | 88% | 2.9 m/s | 2.4 |
| 1992 | 15.0°C | 11.3°C | 7.6°C | 20.3°C | 4.4°C | 93 mm | 86% | 3.6 m/s | 2.4 |
| 1991 | 15.7°C | 11.7°C | 7.8°C | 19.8°C | 4.1°C | 80 mm | 85% | 3.7 m/s | 2.2 |
| 1990 | 14.1°C | 9.8°C | 5.5°C | 20.2°C | 1.1°C | 76 mm | 83% | 3 m/s | 2.5 |
| 1989 | 15.2°C | 10.9°C | 6.6°C | 20.0°C | 2.4°C | 76 mm | 84% | 2.8 m/s | 2.4 |
| 1988 | 14.9°C | 11.3°C | 7.8°C | 20.1°C | 2.1°C | 136 mm | 89% | 3.3 m/s | 2.1 |
| 1987 | 16.4°C | 11.9°C | 7.3°C | 20.9°C | 1.1°C | 41 mm | 80% | 3.7 m/s | 2.2 |
| 1986 | 15.9°C | 11.5°C | 7.1°C | 21.6°C | 4.1°C | 66 mm | 84% | 2.6 m/s | 2.4 |
| 1985 🔥 | 17.1°C | 12.7°C | 8.3°C | 22.7°C | 3.4°C | 53 mm | 84% | 3.5 m/s | 2.4 |
| 1984 | 16.0°C | 10.8°C | 5.6°C | 22.5°C | 1.9°C | 73 mm | 81% | 2.8 m/s | 2.5 |
| 1983 | 16.6°C | 12.5°C | 8.3°C | 19.4°C | 3.3°C | 115 mm | 83% | 3.5 m/s | — |
| 1982 | 15.0°C | 10.4°C | 5.9°C | 20.2°C | 2.6°C | 72 mm | 78% | 3.6 m/s | — |
| 1981 ❄️ | 13.0°C | 9.1°C | 5.2°C | 18.0°C | -0.1°C | 96 mm | 85% | 4.2 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 15.4°C with lows near 7.3°C (mean 11.4°C), based on 45 years of NASA POWER data.
June averages 81 mm of rainfall in Mount Barker, a relatively wet time of year. The wettest on record was 153 mm in 2009.
The hottest June reached 23.1°C in 2000. The coldest dipped to -0.1°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.5°C — but days and nights have moved in opposite directions. Overnight lows rose from 6.7°C to 8°C while daytime highs eased from 15.5°C to 15.2°C, narrowing the gap between day and night.
June is one of the cooler months of the year in Mount Barker and a relatively wet time of year, so plan for around 15.4°C daytime highs and 7.3°C at night.
Not quite — June is the 3rd coolest month in Mount Barker, averaging 11.4°C.
For June in Mount Barker, pack warm layers and a jacket for chilly mornings, with typical highs of 15.4°C and lows of 7.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 83% — quite humid.
Average wind speed in June is 3.3 m/s. The windiest June on record averaged 4.2 m/s (1981).
The wettest June on record was 2009 with 153 mm. On average, June sees 81 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
