June is one of the cooler months of the year in Merredin, with average highs near 17.5°C and lows around 6.4°C (mean 12°C). It is a relatively wet time of year, averaging 46 mm of rainfall and 73% relative humidity across the period.
June is one of the cooler months of the year in Merredin. Across 45 years of records, the warmest June in Merredin was 1983 — when the month averaged 13.7°C — while the coldest was 1981 at 9.2°C. Typical June days reach 17.5°C with nights near 6.4°C. The long-term June temperature trend is broadly flat.
June is a relatively wet time of year in Merredin, averaging 46 mm of rainfall. The wettest Junes on record were 1998 and 2019 with 86 mm, while the driest was 2001 at 7 mm.
Relative humidity in Merredin during June averages 73%. The most humid June was 2023 at 81%, and the least humid was 2017 at 61%.
June receives about 2.9 kWh/m²/day of solar energy in Merredin. The sunniest Junes were 1984, 1990 and 2006 at 3.2 kWh/m²/day, and the cloudiest was 2024 at 2.5.
Average wind speed in Merredin during June is 3 m/s. The windiest June was 1992 at 3.7 m/s, while the calmest was 2010 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.8°C | 11.6°C | 12.0°C | 12.2°C | 12.1°C | +0.3°C |
| Avg High | 17.4°C | 16.9°C | 17.7°C | 17.9°C | 17.5°C | +0.1°C |
| Avg Low | 6.2°C | 6.3°C | 6.3°C | 6.4°C | 6.8°C | +0.6°C |
| Avg Rain | 53 mm | 53 mm | 33 mm | 36 mm | 62 mm | +9 mm |
June temperatures in Merredin have risen by about 0.3°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -2.9°C (1981) to a record high of 26.2°C (1998).
Rainfall in June is a relatively wet time of year, averaging 46 mm, with a wettest year of 86 mm.
A quieter season to visit Merredin
If your dates are flexible, the more temperate months of November and March tend to be the most comfortable for visiting Merredin. That said, June — with days averaging 17.5°C and nights around 6.4°C (mean 12°C) and moderate rainfall (46 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 | 18.7°C | 13.0°C | 7.4°C | 24.7°C | 3.4°C | 57 mm | 73% | 2.7 m/s | 2.9 |
| 2024 | 18.2°C | 13.0°C | 7.9°C | 24.7°C | 2.5°C | 59 mm | 75% | 2.7 m/s | 2.5 |
| 2023 | 14.8°C | 10.0°C | 5.2°C | 19.5°C | 1.2°C | 79 mm | 81% | 2.9 m/s | 2.8 |
| 2022 | 17.8°C | 12.4°C | 7.1°C | 21.5°C | 3.0°C | 52 mm | 77% | 2.8 m/s | 2.9 |
| 2021 | 16.1°C | 10.9°C | 5.7°C | 19.9°C | 1.5°C | 46 mm | 77% | 2.6 m/s | 2.8 |
| 2020 | 19.3°C | 13.3°C | 7.3°C | 25.0°C | 2.7°C | 77 mm | 68% | 3 m/s | 3 |
| 2019 | 17.3°C | 11.8°C | 6.3°C | 22.5°C | 1.3°C | 86 mm | 69% | 3.3 m/s | 2.8 |
| 2018 | 17.7°C | 12.2°C | 6.7°C | 24.7°C | 2.5°C | 41 mm | 72% | 2.5 m/s | 2.7 |
| 2017 | 19.9°C | 13.5°C | 7.0°C | 26.1°C | 2.4°C | 10 mm | 61% | 2.7 m/s | 3.1 |
| 2016 | 16.0°C | 10.9°C | 5.8°C | 22.5°C | 1.1°C | 36 mm | 78% | 2.7 m/s | 2.8 |
| 2015 | 19.2°C | 13.3°C | 7.3°C | 25.8°C | 3.4°C | 39 mm | 70% | 3 m/s | 3 |
| 2014 | 17.6°C | 11.5°C | 5.4°C | 21.8°C | 1.4°C | 23 mm | 72% | 2.8 m/s | 3 |
| 2013 | 17.6°C | 11.6°C | 5.5°C | 20.4°C | 2.8°C | 10 mm | 73% | 2.4 m/s | 3 |
| 2012 | 17.9°C | 12.4°C | 6.9°C | 23.9°C | 1.5°C | 55 mm | 70% | 3.2 m/s | 2.8 |
| 2011 | 18.2°C | 12.6°C | 7.0°C | 21.7°C | 4.2°C | 38 mm | 73% | 3.3 m/s | 3 |
| 2010 | 17.5°C | 11.7°C | 5.9°C | 21.8°C | -0.7°C | 22 mm | 70% | 2.3 m/s | 2.9 |
| 2009 | 17.1°C | 11.7°C | 6.4°C | 21.6°C | 1.7°C | 50 mm | 75% | 3.4 m/s | 2.8 |
| 2008 | 18.3°C | 12.4°C | 6.5°C | 22.8°C | 2.9°C | 33 mm | 71% | 3 m/s | 3 |
| 2007 | 17.6°C | 12.0°C | 6.5°C | 22.1°C | 2.9°C | 22 mm | 70% | 3.4 m/s | 2.8 |
| 2006 | 17.7°C | 11.1°C | 4.4°C | 21.8°C | 0.2°C | 13 mm | 67% | 2.8 m/s | 3.2 |
| 2005 | 15.7°C | 11.1°C | 6.5°C | 21.5°C | 2.9°C | 67 mm | 78% | 3.3 m/s | 2.6 |
| 2004 | 18.2°C | 12.9°C | 7.6°C | 24.9°C | 1.2°C | 46 mm | 77% | 3.3 m/s | 2.7 |
| 2003 | 17.0°C | 11.4°C | 5.7°C | 21.3°C | 1.6°C | 41 mm | 74% | 3.2 m/s | 3 |
| 2002 | 18.2°C | 12.3°C | 6.5°C | 24.4°C | 2.7°C | 30 mm | 70% | 3.2 m/s | 2.7 |
| 2001 | 18.5°C | 12.2°C | 5.9°C | 23.5°C | 2.9°C | 7 mm | 68% | 2.4 m/s | 3.1 |
| 2000 | 18.2°C | 12.5°C | 6.7°C | 23.7°C | 2.4°C | 21 mm | 68% | 3.3 m/s | 3 |
| 1999 | 16.9°C | 11.3°C | 5.8°C | 20.3°C | 1.9°C | 37 mm | 78% | 2.8 m/s | 3.1 |
| 1998 🌧️ | 16.6°C | 11.3°C | 6.0°C | 26.2°C | 0.9°C | 86 mm | 75% | 3.3 m/s | 2.9 |
| 1997 | 18.5°C | 12.9°C | 7.3°C | 24.0°C | 2.3°C | 21 mm | 70% | 3 m/s | 2.9 |
| 1996 | 18.2°C | 13.0°C | 7.8°C | 21.7°C | 3.7°C | 65 mm | 74% | 3.3 m/s | 2.7 |
| 1995 | 15.7°C | 10.8°C | 5.9°C | 23.4°C | 2.0°C | 55 mm | 78% | 3.3 m/s | 2.8 |
| 1994 | 17.5°C | 11.7°C | 5.9°C | 23.2°C | 0.6°C | 35 mm | 72% | 2.6 m/s | 3.1 |
| 1993 | 15.1°C | 10.3°C | 5.4°C | 17.9°C | 2.7°C | 62 mm | 79% | 3.3 m/s | 2.7 |
| 1992 | 17.0°C | 12.1°C | 7.2°C | 21.1°C | 2.9°C | 78 mm | 78% | 3.7 m/s | 2.9 |
| 1991 | 17.7°C | 12.8°C | 8.0°C | 21.8°C | 5.2°C | 56 mm | 76% | 3.1 m/s | 2.6 |
| 1990 | 16.2°C | 10.0°C | 3.8°C | 24.2°C | 0.1°C | 31 mm | 70% | 2.7 m/s | 3.2 |
| 1989 | 15.8°C | 10.4°C | 5.0°C | 19.7°C | 0.9°C | 71 mm | 78% | 2.9 m/s | 3 |
| 1988 | 17.8°C | 12.8°C | 7.8°C | 24.1°C | 1.7°C | 52 mm | 77% | 3.4 m/s | 2.7 |
| 1987 | 18.2°C | 12.7°C | 7.1°C | 22.9°C | 3.2°C | 42 mm | 71% | 3.1 m/s | 2.7 |
| 1986 | 17.1°C | 12.0°C | 7.0°C | 22.6°C | 2.8°C | 84 mm | 75% | 3.5 m/s | 2.7 |
| 1985 | 19.5°C | 13.3°C | 7.1°C | 25.3°C | 1.6°C | 20 mm | 69% | 2.6 m/s | 2.9 |
| 1984 | 17.8°C | 11.3°C | 4.8°C | 23.2°C | 0.5°C | 21 mm | 73% | 2.6 m/s | 3.2 |
| 1983 🔥 | 19.3°C | 13.7°C | 8.1°C | 23.7°C | 4.6°C | 73 mm | 68% | 3.2 m/s | — |
| 1982 | 16.7°C | 10.6°C | 4.6°C | 21.6°C | -0.3°C | 58 mm | 71% | 3 m/s | — |
| 1981 ❄️ | 14.2°C | 9.2°C | 4.1°C | 18.4°C | -2.9°C | 53 mm | 79% | 3.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 17.5°C with lows near 6.4°C (mean 12°C), based on 45 years of NASA POWER data.
June averages 46 mm of rainfall in Merredin, a relatively wet time of year. The wettest on record was 86 mm in 1998.
The hottest June reached 26.2°C in 1998. The coldest dipped to -2.9°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.3°C — but days and nights have moved in opposite directions. Overnight lows rose from 5.7°C to 6.7°C while daytime highs eased from 17.5°C to 17.1°C, narrowing the gap between day and night.
June is one of the cooler months of the year in Merredin and a relatively wet time of year, so plan for around 17.5°C daytime highs and 6.4°C at night.
Not quite — June is the 3rd coolest month in Merredin, averaging 12°C.
For June in Merredin, pack warm layers and a jacket for chilly mornings, with typical highs of 17.5°C and lows of 6.4°C.
Relative humidity in June averages 73% — moderately humid.
Average wind speed in June is 3 m/s. The windiest June on record averaged 3.7 m/s (1992).
The wettest June on record was 1998 with 86 mm. On average, June sees 46 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 Merredin 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.
