April is one of the warmer months of the year in Mount Barker, with average highs near 22.2°C and lows around 11.6°C (mean 16.9°C). It is about average for rainfall, averaging 32 mm of rainfall and 64% relative humidity across the period.
April is one of the warmer months of the year in Mount Barker. Across 45 years of records, the warmest April in Mount Barker was 2018 — when the month averaged 20°C — while the coldest was 1983 at 14.2°C. Typical April days reach 22.2°C with nights near 11.6°C. The long-term trend is warming, about 0.3°C per decade.
April is about average for rainfall in Mount Barker, averaging 32 mm of rainfall. The wettest April on record was 2007 with 93 mm, while the driest was 1993 at 2 mm.
Relative humidity in Mount Barker during April averages 64%. The most humid April was 2020 at 72%, and the least humid was 1993 at 52%.
April receives about 3.7 kWh/m²/day of solar energy in Mount Barker. The sunniest April was 2018 at 4.2 kWh/m²/day, and the cloudiest was 2006 at 3.2.
Average wind speed in Mount Barker during April is 2.5 m/s. The windiest April was 1986 at 3.2 m/s, while the calmest were 1992, 1999 and 2002 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.5°C | 16.2°C | 17.2°C | 17.6°C | 17.2°C | +0.7°C |
| Avg High | 21.9°C | 21.4°C | 22.7°C | 22.9°C | 22.2°C | +0.3°C |
| Avg Low | 11.2°C | 11.1°C | 11.6°C | 12.3°C | 12.2°C | +1°C |
| Avg Rain | 38 mm | 29 mm | 39 mm | 27 mm | 28 mm | -10 mm |
April temperatures in Mount Barker have risen by about 1.2°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 3.2°C (1983) to a record high of 35.4°C (2005).
Rainfall in April is about average for rainfall, averaging 32 mm, with a wettest year of 93 mm.
A good time to visit Mount Barker
April is a good time to visit Mount Barker, with days averaging 22.2°C and nights around 11.6°C (mean 16.9°C, close to Mount Barker's yearly average) and moderate rainfall. February and January 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 | 24.5°C | 19.4°C | 14.3°C | 33.4°C | 10.0°C | 8 mm | 59% | 2.3 m/s | 3.7 |
| 2024 | 20.3°C | 15.5°C | 10.6°C | 24.7°C | 7.6°C | 18 mm | 70% | 2.4 m/s | 3.6 |
| 2023 | 22.0°C | 17.0°C | 12.1°C | 29.5°C | 8.5°C | 40 mm | 64% | 2.7 m/s | 3.8 |
| 2022 | 23.4°C | 18.1°C | 12.8°C | 28.9°C | 7.9°C | 13 mm | 63% | 2.5 m/s | 3.6 |
| 2021 | 22.9°C | 17.6°C | 12.3°C | 33.0°C | 6.9°C | 10 mm | 60% | 2.3 m/s | 3.9 |
| 2020 | 20.0°C | 15.7°C | 11.3°C | 26.1°C | 6.9°C | 76 mm | 72% | 2.7 m/s | 3.5 |
| 2019 | 24.1°C | 18.4°C | 12.8°C | 32.6°C | 7.7°C | 4 mm | 53% | 2.6 m/s | 3.7 |
| 2018 🔥 | 25.8°C | 20.0°C | 14.1°C | 34.9°C | 9.0°C | 11 mm | 57% | 2.6 m/s | 4.2 |
| 2017 | 22.8°C | 17.8°C | 12.7°C | 31.2°C | 8.5°C | 20 mm | 63% | 2.4 m/s | 3.7 |
| 2016 | 23.7°C | 18.1°C | 12.5°C | 30.0°C | 8.7°C | 5 mm | 61% | 2.4 m/s | 3.7 |
| 2015 | 19.7°C | 15.0°C | 10.3°C | 27.8°C | 5.0°C | 72 mm | 70% | 2.5 m/s | 3.3 |
| 2014 | 21.8°C | 16.9°C | 12.1°C | 33.6°C | 7.5°C | 42 mm | 69% | 2.5 m/s | 3.5 |
| 2013 | 22.9°C | 17.6°C | 12.3°C | 30.1°C | 6.7°C | 35 mm | 63% | 2.3 m/s | 3.8 |
| 2012 | 23.1°C | 17.9°C | 12.7°C | 32.3°C | 7.1°C | 25 mm | 60% | 2.3 m/s | 3.8 |
| 2011 | 21.8°C | 16.4°C | 11.0°C | 29.0°C | 8.2°C | 18 mm | 69% | 2.3 m/s | 3.9 |
| 2010 | 23.1°C | 17.9°C | 12.8°C | 30.4°C | 7.9°C | 42 mm | 66% | 2.3 m/s | 3.6 |
| 2009 | 22.2°C | 17.1°C | 11.9°C | 32.9°C | 8.2°C | 64 mm | 63% | 2.8 m/s | 3.6 |
| 2008 | 21.8°C | 16.4°C | 11.1°C | 28.7°C | 7.9°C | 39 mm | 60% | 2.5 m/s | 3.7 |
| 2007 🌧️ | 23.5°C | 18.1°C | 12.7°C | 31.5°C | 7.6°C | 93 mm | 63% | 2.5 m/s | 4 |
| 2006 | 19.4°C | 15.0°C | 10.5°C | 24.5°C | 5.3°C | 43 mm | 68% | 2.9 m/s | 3.2 |
| 2005 | 25.3°C | 19.1°C | 12.9°C | 35.4°C | 7.0°C | 9 mm | 54% | 2.6 m/s | 3.9 |
| 2004 | 22.6°C | 17.4°C | 12.1°C | 32.0°C | 8.4°C | 16 mm | 64% | 2.4 m/s | 3.5 |
| 2003 | 22.8°C | 16.8°C | 10.7°C | 26.9°C | 6.3°C | 38 mm | 63% | 2.5 m/s | 3.9 |
| 2002 | 24.7°C | 18.3°C | 11.9°C | 30.4°C | 7.6°C | 9 mm | 57% | 2.2 m/s | 3.9 |
| 2001 | 22.1°C | 16.4°C | 10.6°C | 30.9°C | 5.9°C | 20 mm | 61% | 2.5 m/s | 4 |
| 2000 | 22.3°C | 16.9°C | 11.5°C | 27.9°C | 6.0°C | 55 mm | 68% | 2.5 m/s | 3.9 |
| 1999 | 20.9°C | 15.2°C | 9.4°C | 27.9°C | 4.7°C | 7 mm | 65% | 2.2 m/s | 3.8 |
| 1998 | 20.3°C | 15.3°C | 10.2°C | 30.7°C | 7.5°C | 78 mm | 67% | 2.5 m/s | 3.3 |
| 1997 | 22.8°C | 17.2°C | 11.7°C | 28.3°C | 6.1°C | 3 mm | 62% | 2.3 m/s | 3.5 |
| 1996 | 19.1°C | 14.9°C | 10.8°C | 28.2°C | 4.9°C | 28 mm | 70% | 2.8 m/s | 3.3 |
| 1995 | 19.2°C | 14.6°C | 9.9°C | 26.4°C | 6.6°C | 46 mm | 67% | 2.7 m/s | 3.7 |
| 1994 | 22.1°C | 17.1°C | 12.2°C | 29.2°C | 9.1°C | 12 mm | 61% | 2.5 m/s | 3.8 |
| 1993 | 24.0°C | 18.1°C | 12.2°C | 31.9°C | 8.2°C | 2 mm | 52% | 2.3 m/s | 4 |
| 1992 | 21.5°C | 16.5°C | 11.5°C | 33.6°C | 6.8°C | 65 mm | 68% | 2.2 m/s | 3.5 |
| 1991 | 21.8°C | 16.7°C | 11.6°C | 31.8°C | 5.8°C | 30 mm | 64% | 2.4 m/s | 3.7 |
| 1990 | 21.9°C | 16.8°C | 11.6°C | 30.6°C | 8.4°C | 18 mm | 67% | 3.1 m/s | 3.9 |
| 1989 | 22.3°C | 17.0°C | 11.7°C | 31.5°C | 8.1°C | 31 mm | 68% | 2.4 m/s | 3.6 |
| 1988 | 22.5°C | 16.8°C | 11.1°C | 25.8°C | 7.6°C | 14 mm | 67% | 2.6 m/s | 3.6 |
| 1987 | 22.6°C | 16.9°C | 11.1°C | 32.5°C | 6.1°C | 25 mm | 59% | 2.5 m/s | 3.7 |
| 1986 | 21.2°C | 16.3°C | 11.4°C | 35.0°C | 6.7°C | 56 mm | 62% | 3.2 m/s | 3.5 |
| 1985 | 21.9°C | 16.7°C | 11.5°C | 31.8°C | 6.5°C | 44 mm | 63% | 2.6 m/s | 3.6 |
| 1984 | 21.3°C | 15.8°C | 10.4°C | 27.8°C | 6.6°C | 26 mm | 67% | 2.4 m/s | 3.8 |
| 1983 ❄️ | 18.8°C | 14.2°C | 9.5°C | 25.6°C | 3.2°C | 89 mm | 69% | 2.9 m/s | — |
| 1982 | 22.0°C | 16.8°C | 11.7°C | 29.5°C | 7.9°C | 52 mm | 63% | 2.4 m/s | — |
| 1981 | 24.2°C | 18.1°C | 12.0°C | 31.5°C | 7.6°C | 6 mm | 61% | 2.4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 22.2°C with lows near 11.6°C (mean 16.9°C), based on 45 years of NASA POWER data.
April averages 32 mm of rainfall in Mount Barker, about average for rainfall. The wettest on record was 93 mm in 2007.
The hottest April reached 35.4°C in 2005. The coldest dipped to 3.2°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.2°C. Daytime highs moved from 21.6°C to 22.6°C and overnight lows from 11°C to 12.4°C over the same span.
April is one of the warmer months of the year in Mount Barker and about average for rainfall, so plan for around 22.2°C daytime highs and 11.6°C at night.
Not quite — April is the 7th coolest month in Mount Barker, averaging 16.9°C.
For April in Mount Barker, pack light layers you can adjust through the day, with typical highs of 22.2°C and lows of 11.6°C.
Relative humidity in April averages 64% — moderately humid.
Average wind speed in April is 2.5 m/s. The windiest April on record averaged 3.2 m/s (1986).
The wettest April on record was 2007 with 93 mm. On average, April sees 32 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 Mount Barker 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.
