April is one of the warmer months of the year in Perth, with average highs near 23.5°C and lows around 17.7°C (mean 20.6°C). It is one of the drier months, averaging 31 mm of rainfall and 68% relative humidity across the period.
April is one of the warmer months of the year in Perth. Across 45 years of records, the warmest April in Perth was 1999 — when the month averaged 22.8°C — while the coldest was 2006 at 18.6°C. Typical April days reach 23.5°C with nights near 17.7°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Perth, averaging 31 mm of rainfall. The wettest April on record was 1987 with 91 mm, while the driest were 1982 and 2017 at 1 mm.
Relative humidity in Perth during April averages 68%. The most humid April was 2016 at 74%, and the least humid was 2024 at 57%.
April receives about 4.4 kWh/m²/day of solar energy in Perth. The sunniest April was 2017 at 5 kWh/m²/day, and the cloudiest were 1997, 2013 and 2016 at 4.
Average wind speed in Perth during April is 4.8 m/s. The windiest April was 1989 at 5.7 m/s, while the calmest was 2013 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.4°C | 20.8°C | 20.2°C | 20.7°C | 21.0°C | +0.6°C |
| Avg High | 23.5°C | 23.7°C | 23.0°C | 23.5°C | 24.0°C | +0.5°C |
| Avg Low | 17.4°C | 18.0°C | 17.4°C | 17.9°C | 18.0°C | +0.6°C |
| Avg Rain | 34 mm | 25 mm | 41 mm | 30 mm | 24 mm | -10 mm |
April temperatures in Perth have risen by about 0.6°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 12°C (1982) to a record high of 31.9°C (2024).
Rainfall in April is one of the drier months, averaging 31 mm, with a wettest year of 91 mm.
A good time to visit Perth
April is a good time to visit Perth, with days averaging 23.5°C and nights around 17.7°C (mean 20.6°C, warmer than Perth's yearly average) and moderate rainfall. December and March 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 | 24.8°C | 21.7°C | 18.7°C | 29.7°C | 15.0°C | 4 mm | 66% | 5.2 m/s | 4.7 |
| 2024 | 25.7°C | 21.8°C | 17.8°C | 31.9°C | 15.1°C | 7 mm | 57% | 5.2 m/s | 4.9 |
| 2023 | 22.0°C | 19.5°C | 16.9°C | 27.6°C | 13.8°C | 47 mm | 69% | 5.1 m/s | 4.5 |
| 2022 | 23.4°C | 20.5°C | 17.6°C | 28.3°C | 15.1°C | 42 mm | 67% | 4.8 m/s | 4.5 |
| 2021 | 24.4°C | 21.4°C | 18.3°C | 29.1°C | 15.1°C | 35 mm | 69% | 4.5 m/s | 4.4 |
| 2020 | 23.6°C | 21.1°C | 18.7°C | 30.6°C | 13.8°C | 10 mm | 68% | 4.6 m/s | 4.3 |
| 2019 | 23.2°C | 20.1°C | 16.9°C | 31.0°C | 13.6°C | 24 mm | 66% | 5 m/s | 4.8 |
| 2018 | 23.0°C | 20.5°C | 18.1°C | 28.7°C | 15.0°C | 14 mm | 71% | 4.6 m/s | 4.6 |
| 2017 | 23.7°C | 20.2°C | 16.7°C | 28.6°C | 14.1°C | 1 mm | 67% | 4.6 m/s | 5 |
| 2016 | 22.7°C | 20.3°C | 17.8°C | 28.8°C | 14.6°C | 75 mm | 74% | 4.8 m/s | 4 |
| 2015 | 23.4°C | 20.1°C | 16.8°C | 26.6°C | 13.1°C | 40 mm | 68% | 5.4 m/s | 4.2 |
| 2014 | 23.4°C | 20.8°C | 18.1°C | 31.5°C | 15.3°C | 37 mm | 67% | 4.3 m/s | 4.5 |
| 2013 | 24.9°C | 22.4°C | 19.9°C | 31.2°C | 16.3°C | 15 mm | 70% | 3.5 m/s | 4 |
| 2012 | 23.5°C | 21.1°C | 18.6°C | 29.2°C | 14.2°C | 43 mm | 67% | 4.7 m/s | 4.2 |
| 2011 | 24.9°C | 21.9°C | 18.9°C | 30.4°C | 15.4°C | 27 mm | 63% | 5.1 m/s | 4.8 |
| 2010 | 22.6°C | 20.0°C | 17.5°C | 28.3°C | 13.3°C | 27 mm | 71% | 4.9 m/s | 4.5 |
| 2009 | 24.4°C | 21.0°C | 17.7°C | 29.7°C | 15.3°C | 14 mm | 64% | 4.9 m/s | 4.6 |
| 2008 | 22.5°C | 20.0°C | 17.5°C | 27.8°C | 14.4°C | 80 mm | 70% | 5 m/s | 4.3 |
| 2007 | 22.1°C | 19.7°C | 17.3°C | 28.9°C | 14.5°C | 58 mm | 71% | 4.7 m/s | 4.5 |
| 2006 ❄️ | 21.3°C | 18.6°C | 15.9°C | 25.8°C | 12.9°C | 23 mm | 71% | 5.1 m/s | 4.4 |
| 2005 | 22.6°C | 19.8°C | 16.9°C | 31.1°C | 13.5°C | 45 mm | 71% | 4.9 m/s | 4.5 |
| 2004 | 23.5°C | 20.6°C | 17.6°C | 28.5°C | 14.4°C | 12 mm | 68% | 4.3 m/s | 4.4 |
| 2003 | 23.7°C | 20.7°C | 17.8°C | 28.9°C | 14.0°C | 59 mm | 71% | 4.7 m/s | 4.3 |
| 2002 | 22.5°C | 20.0°C | 17.5°C | 26.2°C | 14.5°C | 74 mm | 71% | 4.9 m/s | 4.4 |
| 2001 | 23.9°C | 21.1°C | 18.3°C | 30.9°C | 15.0°C | 5 mm | 66% | 4.5 m/s | 4.5 |
| 2000 | 23.7°C | 20.8°C | 17.8°C | 28.5°C | 14.4°C | 39 mm | 65% | 5.2 m/s | 4.5 |
| 1999 🔥 | 26.1°C | 22.8°C | 19.4°C | 30.5°C | 15.4°C | 14 mm | 64% | 4.7 m/s | 4.6 |
| 1998 | 23.8°C | 20.8°C | 17.7°C | 31.3°C | 14.6°C | 21 mm | 66% | 4.9 m/s | 4.3 |
| 1997 | 24.0°C | 21.3°C | 18.6°C | 28.4°C | 14.5°C | 36 mm | 72% | 4.6 m/s | 4 |
| 1996 | 23.8°C | 20.9°C | 18.1°C | 30.5°C | 15.0°C | 20 mm | 65% | 4.9 m/s | 4.3 |
| 1995 | 23.7°C | 20.6°C | 17.6°C | 29.0°C | 14.5°C | 14 mm | 66% | 5 m/s | 4.5 |
| 1994 | 24.4°C | 21.4°C | 18.4°C | 29.7°C | 15.0°C | 6 mm | 67% | 4.6 m/s | 4.8 |
| 1993 | 21.6°C | 19.2°C | 16.8°C | 26.5°C | 13.0°C | 10 mm | 73% | 4.4 m/s | 4.4 |
| 1992 | 23.2°C | 20.4°C | 17.7°C | 26.6°C | 14.4°C | 19 mm | 72% | 5 m/s | 4.4 |
| 1991 | 24.3°C | 21.2°C | 18.0°C | 31.5°C | 14.5°C | 36 mm | 64% | 5.2 m/s | 4.5 |
| 1990 | 22.3°C | 19.8°C | 17.4°C | 27.5°C | 13.7°C | 71 mm | 68% | 5.4 m/s | 4.3 |
| 1989 | 24.0°C | 20.9°C | 17.9°C | 29.2°C | 14.7°C | 33 mm | 68% | 5.7 m/s | 4.1 |
| 1988 | 24.2°C | 21.2°C | 18.2°C | 30.2°C | 15.2°C | 54 mm | 67% | 4.8 m/s | 4.2 |
| 1987 🌧️ | 23.1°C | 20.4°C | 17.8°C | 28.4°C | 13.8°C | 91 mm | 69% | 4.7 m/s | 4.2 |
| 1986 | 22.7°C | 19.3°C | 15.9°C | 29.6°C | 13.7°C | 4 mm | 64% | 5.2 m/s | 4.8 |
| 1985 | 23.3°C | 20.2°C | 17.1°C | 27.7°C | 12.9°C | 38 mm | 66% | 5.2 m/s | 4.7 |
| 1984 | 24.1°C | 20.8°C | 17.5°C | 31.8°C | 12.8°C | 52 mm | 64% | 5 m/s | 4.3 |
| 1983 | 23.3°C | 20.3°C | 17.3°C | 27.8°C | 12.3°C | 10 mm | 65% | 4.8 m/s | — |
| 1982 | 22.8°C | 19.4°C | 16.1°C | 27.3°C | 12.0°C | 1 mm | 66% | 4.9 m/s | — |
| 1981 | 24.0°C | 21.4°C | 18.8°C | 28.8°C | 15.6°C | 26 mm | 71% | 4.2 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 23.5°C with lows near 17.7°C (mean 20.6°C), based on 45 years of NASA POWER data.
April averages 31 mm of rainfall in Perth, one of the drier months. The wettest on record was 91 mm in 1987.
The hottest April reached 31.9°C in 2024. The coldest dipped to 12°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.6°C. Daytime highs moved from 23.5°C to 24.1°C and overnight lows from 17.4°C to 17.9°C over the same span.
April is one of the warmer months of the year in Perth and one of the drier months, so plan for around 23.5°C daytime highs and 17.7°C at night.
Not quite — April is the 8th coolest month in Perth, averaging 20.6°C.
For April in Perth, pack light layers you can adjust through the day, with typical highs of 23.5°C and lows of 17.7°C.
Relative humidity in April averages 68% — moderately humid.
Average wind speed in April is 4.8 m/s. The windiest April on record averaged 5.7 m/s (1989).
The wettest April on record was 1987 with 91 mm. On average, April sees 31 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.
