April is one of the cooler months of the year in Perth, with average highs near 9.5°C and lows around 2.9°C (mean 6.2°C). It is one of the drier months, averaging 61 mm of rainfall and 86% relative humidity across the period.
April is one of the cooler months of the year in Perth. Across 45 years of records, the warmest April in Perth was 2011 — when the month averaged 9°C — while the coldest was 1986 at 3.6°C. Typical April days reach 9.5°C with nights near 2.9°C. The long-term trend is warming, about 0.3°C per decade.
April is one of the drier months in Perth, averaging 61 mm of rainfall. The wettest April on record was 1993 with 128 mm, while the driest was 2021 at 12 mm.
Relative humidity in Perth during April averages 86%. The most humid Aprils were 1987 and 1993 at 89%, and the least humid was 2021 at 81%.
April receives about 3.4 kWh/m²/day of solar energy in Perth. The sunniest Aprils were 2015, 2020 and 2021 at 4.2 kWh/m²/day, and the cloudiest were 1993 and 1996 at 2.8.
Average wind speed in Perth during April is 3.5 m/s. The windiest April was 1991 at 4.5 m/s, while the calmest was 2025 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.5°C | 5.9°C | 6.6°C | 6.4°C | 6.7°C | +1.2°C |
| Avg High | 8.8°C | 9.2°C | 9.8°C | 9.6°C | 10.2°C | +1.4°C |
| Avg Low | 2.1°C | 2.7°C | 3.4°C | 3.1°C | 3.1°C | +1°C |
| Avg Rain | 52 mm | 73 mm | 63 mm | 60 mm | 54 mm | +2 mm |
April temperatures in Perth have risen by about 1.1°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -4.1°C (2018) to a record high of 19.8°C (2025).
Rainfall in April is one of the drier months, averaging 61 mm, with a wettest year of 128 mm.
A good time to visit Perth
April is a good time to visit Perth, with days averaging 9.5°C and nights around 2.9°C (mean 6.2°C, cooler than Perth's yearly average) and moderate rainfall. July and August are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 12.2°C | 8.4°C | 4.7°C | 19.8°C | 1.4°C | 35 mm | 85% | 2.7 m/s | 4 |
| 2024 | 9.7°C | 6.6°C | 3.5°C | 14.2°C | -0.3°C | 125 mm | 88% | 4.3 m/s | 3.3 |
| 2023 | 9.8°C | 6.5°C | 3.2°C | 12.8°C | -1.1°C | 73 mm | 88% | 3.2 m/s | 3.6 |
| 2022 | 10.2°C | 6.9°C | 3.6°C | 13.8°C | -1.0°C | 61 mm | 86% | 3.1 m/s | 3.6 |
| 2021 | 8.9°C | 4.9°C | 1.0°C | 14.4°C | -2.9°C | 12 mm | 81% | 2.9 m/s | 4.2 |
| 2020 | 10.5°C | 6.7°C | 2.8°C | 15.3°C | -1.6°C | 17 mm | 84% | 3.2 m/s | 4.2 |
| 2019 | 10.6°C | 7.3°C | 4.0°C | 19.0°C | -0.2°C | 39 mm | 87% | 3.5 m/s | 3.7 |
| 2018 | 9.1°C | 6.3°C | 3.5°C | 15.1°C | -4.1°C | 74 mm | 89% | 3.5 m/s | 3.3 |
| 2017 | 10.1°C | 6.4°C | 2.6°C | 13.3°C | -1.3°C | 17 mm | 84% | 3.9 m/s | 3.7 |
| 2016 | 8.0°C | 4.8°C | 1.6°C | 12.7°C | -1.6°C | 78 mm | 86% | 3.5 m/s | 3.5 |
| 2015 | 10.4°C | 6.6°C | 2.8°C | 16.9°C | -2.0°C | 40 mm | 85% | 3.1 m/s | 4.2 |
| 2014 | 10.4°C | 7.5°C | 4.6°C | 15.7°C | -0.4°C | 91 mm | 89% | 3.8 m/s | 3.2 |
| 2013 | 7.8°C | 4.8°C | 1.7°C | 12.3°C | -1.7°C | 68 mm | 84% | 4.1 m/s | 3.5 |
| 2012 | 7.8°C | 4.8°C | 1.7°C | 11.2°C | -3.1°C | 116 mm | 87% | 3.4 m/s | 3.1 |
| 2011 🔥 | 12.5°C | 9.0°C | 5.4°C | 17.2°C | 3.4°C | 25 mm | 87% | 3.3 m/s | 4 |
| 2010 | 9.8°C | 6.4°C | 3.0°C | 13.8°C | -2.8°C | 53 mm | 86% | 3 m/s | 3.7 |
| 2009 | 11.3°C | 7.9°C | 4.6°C | 15.4°C | 2.6°C | 52 mm | 88% | 3.3 m/s | 3.3 |
| 2008 | 8.7°C | 5.6°C | 2.5°C | 13.9°C | -1.2°C | 65 mm | 86% | 3.6 m/s | 3.4 |
| 2007 | 12.5°C | 8.7°C | 4.9°C | 17.6°C | 0.5°C | 28 mm | 86% | 3.1 m/s | 4 |
| 2006 | 8.6°C | 5.4°C | 2.2°C | 12.7°C | -1.9°C | 40 mm | 86% | 4 m/s | 3.9 |
| 2005 | 9.3°C | 6.4°C | 3.5°C | 13.0°C | -0.4°C | 85 mm | 87% | 4.4 m/s | 3.5 |
| 2004 | 10.5°C | 7.4°C | 4.3°C | 15.7°C | 0.2°C | 96 mm | 89% | 3.6 m/s | 3 |
| 2003 | 10.8°C | 7.5°C | 4.1°C | 14.4°C | 0.5°C | 55 mm | 87% | 2.9 m/s | 3.5 |
| 2002 | 9.9°C | 6.7°C | 3.4°C | 14.4°C | -1.0°C | 53 mm | 87% | 3.3 m/s | 3.3 |
| 2001 | 8.2°C | 5.2°C | 2.2°C | 10.9°C | -0.4°C | 64 mm | 87% | 3.6 m/s | 3.3 |
| 2000 | 8.5°C | 5.4°C | 2.4°C | 14.4°C | -1.5°C | 94 mm | 87% | 3.5 m/s | 3 |
| 1999 | 10.0°C | 6.8°C | 3.6°C | 15.9°C | -2.9°C | 72 mm | 88% | 3.6 m/s | 3.1 |
| 1998 | 7.5°C | 4.9°C | 2.3°C | 12.4°C | -2.2°C | 121 mm | 88% | 4.2 m/s | 3.5 |
| 1997 | 10.4°C | 6.6°C | 2.8°C | 15.2°C | -1.6°C | 26 mm | 85% | 3.5 m/s | 3.3 |
| 1996 | 8.7°C | 6.0°C | 3.2°C | 13.2°C | -2.0°C | 93 mm | 89% | 3.4 m/s | 2.8 |
| 1995 | 9.5°C | 5.8°C | 2.1°C | 15.0°C | -1.7°C | 40 mm | 86% | 3.8 m/s | 3.2 |
| 1994 | 8.6°C | 5.3°C | 2.0°C | 13.4°C | -1.2°C | 62 mm | 87% | 4.1 m/s | 3.2 |
| 1993 🌧️ | 9.6°C | 6.5°C | 3.4°C | 17.1°C | 1.1°C | 128 mm | 89% | 3.5 m/s | 2.8 |
| 1992 | 8.8°C | 5.7°C | 2.7°C | 12.3°C | -1.1°C | 75 mm | 87% | 4.3 m/s | 3 |
| 1991 | 8.7°C | 5.5°C | 2.3°C | 14.6°C | -2.2°C | 67 mm | 86% | 4.5 m/s | 3.3 |
| 1990 | 9.7°C | 6.1°C | 2.6°C | 19.1°C | -1.9°C | 41 mm | 85% | 4 m/s | 3.5 |
| 1989 | 7.6°C | 4.6°C | 1.5°C | 11.6°C | -1.8°C | 41 mm | 84% | 3.4 m/s | 3 |
| 1988 | 9.2°C | 5.8°C | 2.4°C | 13.7°C | -2.6°C | 70 mm | 84% | 2.8 m/s | 3.2 |
| 1987 | 10.5°C | 7.2°C | 3.9°C | 18.1°C | -0.8°C | 65 mm | 89% | 3.4 m/s | 3.2 |
| 1986 ❄️ | 6.7°C | 3.6°C | 0.5°C | 12.2°C | -2.3°C | 75 mm | 86% | 3.8 m/s | 2.9 |
| 1985 | 8.6°C | 5.4°C | 2.2°C | 12.6°C | -1.2°C | 71 mm | 87% | 3.8 m/s | 3 |
| 1984 | 9.9°C | 6.2°C | 2.5°C | 18.2°C | -1.0°C | 26 mm | 86% | 3.2 m/s | 3.6 |
| 1983 | 7.4°C | 4.3°C | 1.3°C | 10.9°C | -2.2°C | 62 mm | 85% | 3.4 m/s | — |
| 1982 | 10.1°C | 6.5°C | 2.9°C | 15.1°C | -1.8°C | 33 mm | 85% | 3.3 m/s | — |
| 1981 | 9.6°C | 5.6°C | 1.6°C | 14.2°C | -2.4°C | 22 mm | 85% | 2.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 9.5°C with lows near 2.9°C (mean 6.2°C), based on 45 years of NASA POWER data.
April averages 61 mm of rainfall in Perth, one of the drier months. The wettest on record was 128 mm in 1993.
The hottest April reached 19.8°C in 2025. The coldest dipped to -4.1°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.1°C. Daytime highs moved from 9.1°C to 10.2°C and overnight lows from 2.1°C to 3.2°C over the same span.
April is one of the cooler months of the year in Perth and one of the drier months, so plan for around 9.5°C daytime highs and 2.9°C at night.
Not quite — April is the 6th coolest month in Perth, averaging 6.2°C.
For April in Perth, pack warm layers and a jacket for chilly mornings, with typical highs of 9.5°C and lows of 2.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 86% — quite humid.
Average wind speed in April is 3.5 m/s. The windiest April on record averaged 4.5 m/s (1991).
The wettest April on record was 1993 with 128 mm. On average, April sees 61 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 Perth 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.
