April is one of the warmer months of the year in Merredin, with average highs near 26.2°C and lows around 12.6°C (mean 19.4°C). It is about average for rainfall, averaging 22 mm of rainfall and 54% relative humidity across the period.
April is one of the warmer months of the year in Merredin. Across 45 years of records, the warmest April in Merredin was 2013 — when the month averaged 22°C — while the coldest was 2006 at 16.3°C. Typical April days reach 26.2°C with nights near 12.6°C. The long-term April temperature trend is broadly flat.
April is about average for rainfall in Merredin, averaging 22 mm of rainfall. The wettest April on record was 1984 with 55 mm, while the driest was 1994 at 0 mm.
Relative humidity in Merredin during April averages 54%. The most humid April was 1992 at 66%, and the least humid was 1994 at 42%.
April receives about 4.6 kWh/m²/day of solar energy in Merredin. The sunniest April was 1986 at 5.3 kWh/m²/day, and the cloudiest was 2016 at 3.9.
Average wind speed in Merredin during April is 3.4 m/s. The windiest April was 1989 at 4.1 m/s, while the calmest was 2013 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.4°C | 19.3°C | 19.0°C | 19.7°C | 19.4°C | 0°C |
| Avg High | 26.4°C | 26.0°C | 25.9°C | 26.6°C | 26.0°C | -0.4°C |
| Avg Low | 12.5°C | 12.6°C | 12.2°C | 12.9°C | 12.8°C | +0.3°C |
| Avg Rain | 22 mm | 26 mm | 22 mm | 18 mm | 19 mm | -2 mm |
April temperatures in Merredin have fallen by about 0.3°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 4.2°C (1984) to a record high of 38.1°C (2021).
Rainfall in April is about average for rainfall, averaging 22 mm, with a wettest year of 55 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit Merredin
April is one of the best times to visit Merredin. Expect days averaging 26.2°C and nights around 12.6°C (mean 19.4°C) — warmer than Merredin's yearly average — with low rainfall (22 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 26.7°C | 20.4°C | 14.1°C | 33.9°C | 7.9°C | 16 mm | 53% | 3.6 m/s | 4.2 |
| 2024 | 26.7°C | 19.7°C | 12.7°C | 33.4°C | 9.3°C | 10 mm | 45% | 3.9 m/s | 4.9 |
| 2023 | 23.4°C | 16.9°C | 10.5°C | 29.6°C | 5.3°C | 27 mm | 63% | 3.2 m/s | 4.6 |
| 2022 | 24.4°C | 18.2°C | 12.1°C | 31.2°C | 6.4°C | 32 mm | 61% | 3.4 m/s | 4.4 |
| 2021 | 27.7°C | 20.8°C | 13.9°C | 38.1°C | 7.6°C | 27 mm | 48% | 3.2 m/s | 4.6 |
| 2020 | 27.0°C | 20.3°C | 13.7°C | 37.1°C | 5.7°C | 4 mm | 50% | 3.2 m/s | 4.5 |
| 2019 | 26.5°C | 19.2°C | 11.9°C | 35.8°C | 4.4°C | 21 mm | 52% | 3.6 m/s | 4.8 |
| 2018 | 27.1°C | 19.9°C | 12.7°C | 34.8°C | 8.1°C | 4 mm | 53% | 3.1 m/s | 4.8 |
| 2017 | 26.7°C | 19.5°C | 12.3°C | 31.5°C | 7.8°C | 8 mm | 50% | 3 m/s | 5 |
| 2016 | 24.5°C | 18.8°C | 13.0°C | 32.2°C | 6.1°C | 48 mm | 66% | 3.4 m/s | 3.9 |
| 2015 | 24.1°C | 17.8°C | 11.6°C | 29.0°C | 6.6°C | 24 mm | 60% | 3.7 m/s | 4.3 |
| 2014 | 26.8°C | 20.1°C | 13.4°C | 33.9°C | 5.9°C | 42 mm | 53% | 2.9 m/s | 4.7 |
| 2013 🔥 | 28.5°C | 22.0°C | 15.5°C | 36.9°C | 7.3°C | 12 mm | 54% | 2.8 m/s | 4.3 |
| 2012 | 27.0°C | 20.0°C | 13.1°C | 33.4°C | 7.0°C | 5 mm | 47% | 3.2 m/s | 4.7 |
| 2011 | 27.2°C | 20.1°C | 12.9°C | 34.9°C | 7.1°C | 13 mm | 50% | 3.7 m/s | 5 |
| 2010 | 27.4°C | 20.0°C | 12.6°C | 34.7°C | 8.6°C | 1 mm | 53% | 3.2 m/s | 4.7 |
| 2009 | 27.4°C | 20.1°C | 12.9°C | 32.9°C | 7.6°C | 14 mm | 49% | 3.4 m/s | 5.1 |
| 2008 | 24.5°C | 17.8°C | 11.1°C | 33.8°C | 6.0°C | 39 mm | 62% | 3.4 m/s | 4.4 |
| 2007 | 26.3°C | 19.4°C | 12.5°C | 35.4°C | 7.4°C | 23 mm | 56% | 3.4 m/s | 4.7 |
| 2006 ❄️ | 22.9°C | 16.3°C | 9.7°C | 29.0°C | 5.6°C | 28 mm | 64% | 3.2 m/s | 4.6 |
| 2005 | 26.1°C | 19.1°C | 12.1°C | 33.4°C | 8.3°C | 11 mm | 57% | 3.3 m/s | 4.7 |
| 2004 | 26.4°C | 19.7°C | 12.9°C | 33.1°C | 8.5°C | 17 mm | 55% | 3.1 m/s | 4.7 |
| 2003 | 26.4°C | 19.9°C | 13.4°C | 34.0°C | 6.9°C | 34 mm | 59% | 3.6 m/s | 4.4 |
| 2002 | 26.2°C | 19.5°C | 12.7°C | 35.8°C | 8.8°C | 34 mm | 58% | 3.5 m/s | 4.5 |
| 2001 | 27.9°C | 20.4°C | 13.0°C | 35.3°C | 7.5°C | 5 mm | 45% | 3.2 m/s | 4.8 |
| 2000 | 24.7°C | 18.1°C | 11.5°C | 29.8°C | 5.8°C | 20 mm | 59% | 3.6 m/s | 4.7 |
| 1999 | 26.5°C | 19.7°C | 12.9°C | 30.6°C | 8.0°C | 24 mm | 60% | 3.3 m/s | 4.9 |
| 1998 | 25.6°C | 19.3°C | 12.9°C | 36.1°C | 7.4°C | 48 mm | 56% | 3.5 m/s | 4.2 |
| 1997 | 25.7°C | 19.7°C | 13.6°C | 32.8°C | 8.6°C | 37 mm | 63% | 3.3 m/s | 4.1 |
| 1996 | 26.0°C | 19.1°C | 12.3°C | 35.5°C | 6.7°C | 28 mm | 52% | 3.3 m/s | 4.6 |
| 1995 | 24.8°C | 18.1°C | 11.4°C | 31.4°C | 6.6°C | 15 mm | 57% | 3.1 m/s | 4.7 |
| 1994 | 28.6°C | 20.8°C | 13.0°C | 34.6°C | 9.1°C | 0 mm | 42% | 3.1 m/s | 5.1 |
| 1993 | 26.9°C | 19.8°C | 12.8°C | 34.0°C | 6.4°C | 33 mm | 55% | 3.2 m/s | 4.7 |
| 1992 | 24.6°C | 18.8°C | 13.0°C | 29.9°C | 7.5°C | 37 mm | 66% | 3.6 m/s | 4.5 |
| 1991 | 27.2°C | 20.1°C | 13.0°C | 35.9°C | 8.5°C | 13 mm | 47% | 3.4 m/s | 4.7 |
| 1990 | 24.3°C | 17.9°C | 11.5°C | 33.3°C | 6.0°C | 29 mm | 58% | 3.7 m/s | 4.8 |
| 1989 | 25.6°C | 19.3°C | 13.0°C | 31.8°C | 6.1°C | 40 mm | 55% | 4.1 m/s | 4.2 |
| 1988 | 26.4°C | 19.8°C | 13.2°C | 32.7°C | 6.8°C | 37 mm | 53% | 3.4 m/s | 4.4 |
| 1987 | 26.9°C | 20.1°C | 13.3°C | 33.6°C | 7.4°C | 29 mm | 50% | 3.2 m/s | 4.3 |
| 1986 | 25.8°C | 18.1°C | 10.5°C | 35.5°C | 6.4°C | 7 mm | 47% | 3.7 m/s | 5.3 |
| 1985 | 26.1°C | 18.9°C | 11.7°C | 31.3°C | 6.3°C | 6 mm | 49% | 3.5 m/s | 4.9 |
| 1984 🌧️ | 25.6°C | 19.1°C | 12.6°C | 35.0°C | 4.2°C | 55 mm | 55% | 3.4 m/s | 4.2 |
| 1983 | 26.1°C | 19.1°C | 12.1°C | 33.4°C | 5.0°C | 2 mm | 49% | 3.3 m/s | — |
| 1982 | 26.9°C | 19.2°C | 11.6°C | 34.4°C | 5.8°C | 1 mm | 44% | 3.3 m/s | — |
| 1981 | 28.6°C | 21.4°C | 14.3°C | 34.9°C | 10.9°C | 17 mm | 51% | 2.9 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 26.2°C with lows near 12.6°C (mean 19.4°C), based on 45 years of NASA POWER data.
April averages 22 mm of rainfall in Merredin, about average for rainfall. The wettest on record was 55 mm in 1984.
The hottest April reached 38.1°C in 2021. The coldest dipped to 4.2°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have fallen by about 0.3°C — but days and nights have moved in opposite directions. Overnight lows rose from 12.5°C to 12.7°C while daytime highs eased from 26.7°C to 25.8°C, narrowing the gap between day and night.
April is one of the warmer months of the year in Merredin and about average for rainfall, so plan for around 26.2°C daytime highs and 12.6°C at night.
Not quite — April is the 7th coolest month in Merredin, averaging 19.4°C.
For April in Merredin, pack light layers you can adjust through the day, with typical highs of 26.2°C and lows of 12.6°C.
Relative humidity in April averages 54% — relatively dry.
Average wind speed in April is 3.4 m/s. The windiest April on record averaged 4.1 m/s (1989).
The wettest April on record was 1984 with 55 mm. On average, April sees 22 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 April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
