June is one of the cooler months of the year in Kwinana, with average highs near 18.8°C and lows around 14.7°C (mean 16.8°C). It is a relatively wet time of year, averaging 131 mm of rainfall and 72% relative humidity across the period.
June is one of the cooler months of the year in Kwinana. Across 45 years of records, the warmest Junes in Kwinana were 1983 and 2020 — when the month averaged 18.2°C — while the coldest were 1981 and 1990 at 15.2°C. Typical June days reach 18.8°C with nights near 14.7°C. The long-term June temperature trend is broadly flat.
June is a relatively wet time of year in Kwinana, averaging 131 mm of rainfall. The wettest June on record was 2005 with 284 mm, while the driest was 2013 at 30 mm.
Relative humidity in Kwinana during June averages 72%. The most humid June was 1986 at 77%, and the least humid was 2006 at 65%.
June receives about 2.5 kWh/m²/day of solar energy in Kwinana. The sunniest Junes were 2006 and 2017 at 2.8 kWh/m²/day, and the cloudiest were 2004, 2005 and 2012, among others at 2.2.
Average wind speed in Kwinana during June is 5.3 m/s. The windiest June was 1992 at 6.5 m/s, while the calmest was 2001 at 3.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.6°C | 16.7°C | 16.7°C | 16.7°C | 17.1°C | +0.5°C |
| Avg High | 18.6°C | 18.5°C | 18.9°C | 18.9°C | 19.1°C | +0.5°C |
| Avg Low | 14.5°C | 14.9°C | 14.6°C | 14.5°C | 15.1°C | +0.6°C |
| Avg Rain | 156 mm | 169 mm | 142 mm | 88 mm | 88 mm | -67 mm |
June temperatures in Kwinana have stayed relatively stable across the record.
June has ranged from a record low of 8.3°C (1981) to a record high of 23.8°C (1998).
Rainfall in June is a relatively wet time of year, averaging 131 mm, with a wettest year of 284 mm.
A quieter season to visit Kwinana
If your dates are flexible, the more temperate months of December and March tend to be the most comfortable for visiting Kwinana. That said, June — with days averaging 18.8°C and nights around 14.7°C (mean 16.8°C) and higher rainfall (131 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 | 19.9°C | 17.8°C | 15.7°C | 23.0°C | 10.8°C | 85 mm | 70% | 4.9 m/s | 2.3 |
| 2024 | 19.6°C | 17.7°C | 15.8°C | 23.3°C | 12.6°C | 80 mm | 71% | 4.7 m/s | 2.6 |
| 2023 | 17.0°C | 15.5°C | 14.0°C | 20.3°C | 9.9°C | 122 mm | 73% | 5.2 m/s | 2.5 |
| 2022 | 19.1°C | 17.1°C | 15.0°C | 21.2°C | 11.7°C | 71 mm | 74% | 5.2 m/s | 2.5 |
| 2021 | 18.4°C | 16.4°C | 14.3°C | 20.3°C | 10.6°C | 76 mm | 72% | 4.8 m/s | 2.6 |
| 2020 | 20.3°C | 18.2°C | 16.0°C | 23.4°C | 10.5°C | 94 mm | 69% | 5.1 m/s | 2.4 |
| 2019 | 18.8°C | 16.7°C | 14.5°C | 23.7°C | 10.6°C | 141 mm | 68% | 5.7 m/s | 2.5 |
| 2018 | 19.0°C | 16.9°C | 14.9°C | 21.7°C | 12.7°C | 94 mm | 70% | 4.4 m/s | 2.5 |
| 2017 | 20.2°C | 17.5°C | 14.7°C | 22.9°C | 11.4°C | 38 mm | 69% | 4.7 m/s | 2.8 |
| 2016 | 17.6°C | 15.7°C | 13.7°C | 21.0°C | 11.4°C | 82 mm | 74% | 4.8 m/s | 2.6 |
| 2015 | 19.6°C | 17.1°C | 14.6°C | 22.4°C | 10.8°C | 50 mm | 73% | 5 m/s | 2.6 |
| 2014 | 18.6°C | 16.4°C | 14.2°C | 22.7°C | 11.2°C | 99 mm | 72% | 5 m/s | 2.5 |
| 2013 | 18.8°C | 16.6°C | 14.3°C | 21.0°C | 11.8°C | 30 mm | 71% | 4.3 m/s | 2.7 |
| 2012 | 18.8°C | 16.6°C | 14.5°C | 22.8°C | 11.4°C | 153 mm | 72% | 5.3 m/s | 2.2 |
| 2011 | 19.4°C | 17.3°C | 15.3°C | 22.1°C | 12.5°C | 150 mm | 70% | 5.6 m/s | 2.4 |
| 2010 | 18.6°C | 16.2°C | 13.8°C | 22.1°C | 10.9°C | 47 mm | 70% | 4.1 m/s | 2.6 |
| 2009 | 18.5°C | 16.7°C | 14.9°C | 22.9°C | 12.2°C | 161 mm | 73% | 6 m/s | 2.3 |
| 2008 | 19.2°C | 16.7°C | 14.3°C | 22.8°C | 10.8°C | 113 mm | 72% | 5.3 m/s | 2.6 |
| 2007 | 19.1°C | 16.5°C | 14.0°C | 22.0°C | 11.4°C | 86 mm | 72% | 6.2 m/s | 2.7 |
| 2006 | 19.2°C | 16.4°C | 13.6°C | 22.2°C | 9.5°C | 39 mm | 65% | 4.8 m/s | 2.8 |
| 2005 🌧️ | 18.1°C | 16.3°C | 14.6°C | 22.6°C | 10.8°C | 284 mm | 76% | 5.8 m/s | 2.2 |
| 2004 | 19.1°C | 17.2°C | 15.3°C | 21.8°C | 11.0°C | 134 mm | 75% | 5.8 m/s | 2.2 |
| 2003 | 18.6°C | 16.6°C | 14.6°C | 21.6°C | 10.4°C | 184 mm | 71% | 5.7 m/s | 2.5 |
| 2002 | 18.6°C | 16.8°C | 15.0°C | 21.6°C | 11.6°C | 206 mm | 74% | 5.5 m/s | 2.3 |
| 2001 | 19.1°C | 17.1°C | 15.1°C | 22.2°C | 11.2°C | 83 mm | 71% | 3.9 m/s | 2.7 |
| 2000 | 19.3°C | 17.1°C | 14.9°C | 23.2°C | 11.9°C | 127 mm | 70% | 5.4 m/s | 2.4 |
| 1999 | 19.1°C | 17.4°C | 15.7°C | 21.3°C | 11.8°C | 201 mm | 73% | 5.4 m/s | 2.4 |
| 1998 | 18.4°C | 16.5°C | 14.6°C | 23.8°C | 11.2°C | 162 mm | 72% | 6.1 m/s | 2.3 |
| 1997 | 19.3°C | 17.4°C | 15.6°C | 22.4°C | 11.6°C | 125 mm | 73% | 5.1 m/s | 2.4 |
| 1996 | 19.6°C | 17.9°C | 16.2°C | 22.1°C | 11.5°C | 275 mm | 69% | 5.7 m/s | 2.3 |
| 1995 | 17.6°C | 15.9°C | 14.1°C | 22.4°C | 11.1°C | 152 mm | 74% | 5.8 m/s | 2.4 |
| 1994 | 18.4°C | 16.7°C | 15.1°C | 20.8°C | 13.0°C | 197 mm | 72% | 4.8 m/s | 2.4 |
| 1993 | 17.7°C | 15.6°C | 13.5°C | 20.0°C | 11.4°C | 99 mm | 73% | 5.9 m/s | 2.5 |
| 1992 | 18.4°C | 16.7°C | 15.1°C | 20.6°C | 11.0°C | 178 mm | 74% | 6.5 m/s | 2.3 |
| 1991 | 18.9°C | 17.6°C | 16.2°C | 21.3°C | 14.3°C | 210 mm | 73% | 5.6 m/s | 2.2 |
| 1990 | 17.6°C | 15.2°C | 12.7°C | 23.0°C | 9.0°C | 86 mm | 69% | 5.1 m/s | 2.5 |
| 1989 | 18.2°C | 16.0°C | 13.9°C | 21.7°C | 10.9°C | 81 mm | 71% | 4.9 m/s | 2.6 |
| 1988 | 18.8°C | 17.2°C | 15.6°C | 22.4°C | 11.0°C | 182 mm | 76% | 6 m/s | 2.2 |
| 1987 | 18.6°C | 16.7°C | 14.8°C | 21.8°C | 10.1°C | 165 mm | 75% | 5.4 m/s | 2.3 |
| 1986 | 18.2°C | 15.8°C | 13.4°C | 21.4°C | 10.6°C | 189 mm | 77% | 5.8 m/s | 2.5 |
| 1985 | 19.6°C | 17.8°C | 15.9°C | 22.9°C | 11.8°C | 85 mm | 75% | 4.9 m/s | 2.4 |
| 1984 | 19.0°C | 16.6°C | 14.1°C | 23.7°C | 10.3°C | 80 mm | 72% | 4.7 m/s | 2.6 |
| 1983 🔥 | 20.2°C | 18.2°C | 16.1°C | 23.5°C | 12.5°C | 201 mm | 71% | 5.5 m/s | — |
| 1982 | 18.1°C | 15.9°C | 13.7°C | 22.7°C | 10.8°C | 224 mm | 71% | 5.6 m/s | — |
| 1981 ❄️ | 17.0°C | 15.2°C | 13.4°C | 20.3°C | 8.3°C | 194 mm | 73% | 6.3 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 18.8°C with lows near 14.7°C (mean 16.8°C), based on 45 years of NASA POWER data.
June averages 131 mm of rainfall in Kwinana, a relatively wet time of year. The wettest on record was 284 mm in 2005.
The hottest June reached 23.8°C in 1998. The coldest dipped to 8.3°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.2°C. Daytime highs moved from 18.8°C to 18.8°C and overnight lows from 14.6°C to 15°C over the same span.
June is one of the cooler months of the year in Kwinana and a relatively wet time of year, so plan for around 18.8°C daytime highs and 14.7°C at night.
Not quite — June is the 4th coolest month in Kwinana, averaging 16.8°C.
For June in Kwinana, pack light layers you can adjust through the day, with typical highs of 18.8°C and lows of 14.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 72% — moderately humid.
Average wind speed in June is 5.3 m/s. The windiest June on record averaged 6.5 m/s (1992).
The wettest June on record was 2005 with 284 mm. On average, June sees 131 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 Kwinana 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.
