April is close to Muswellbrook's year-round average, with average highs near 22.6°C and lows around 11.3°C (mean 17°C). It is about average for rainfall, averaging 65 mm of rainfall and 72% relative humidity across the period.
April is close to Muswellbrook's year-round average. Across 45 years of records, the warmest April in Muswellbrook was 2018 — when the month averaged 20.1°C — while the coldest was 2021 at 14.7°C. Typical April days reach 22.6°C with nights near 11.3°C. The long-term April temperature trend is broadly flat.
April is about average for rainfall in Muswellbrook, averaging 65 mm of rainfall. The wettest April on record was 2015 with 216 mm, while the driest was 1991 at 5 mm.
Relative humidity in Muswellbrook during April averages 72%. The most humid April was 1989 at 89%, and the least humid was 1986 at 52%.
April receives about 4.1 kWh/m²/day of solar energy in Muswellbrook. The sunniest Aprils were 1997 and 2006 at 4.7 kWh/m²/day, and the cloudiest was 1988 at 2.9.
Average wind speed in Muswellbrook during April is 0.7 m/s. The windiest Aprils were 2009, 2015 and 2023, among others at 0.8 m/s, while the calmest were 2013, 2014 and 2021, among others at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.8°C | 16.8°C | 17.0°C | 17.4°C | 16.2°C | -0.6°C |
| Avg High | 22.3°C | 22.8°C | 22.7°C | 23.2°C | 21.4°C | -0.9°C |
| Avg Low | 11.4°C | 10.8°C | 11.3°C | 11.7°C | 11.0°C | -0.4°C |
| Avg Rain | 89 mm | 50 mm | 56 mm | 58 mm | 78 mm | -11 mm |
April temperatures in Muswellbrook have stayed relatively stable across the record.
April has ranged from a record low of 1.8°C (2008) to a record high of 35.2°C (1986).
Rainfall in April is about average for rainfall, averaging 65 mm, with a wettest year of 216 mm.
A good time to visit Muswellbrook
April is a good time to visit Muswellbrook, with days averaging 22.6°C and nights around 11.3°C (mean 17°C, close to Muswellbrook's yearly average) and moderate rainfall. December and February 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 | 23.4°C | 17.9°C | 12.4°C | 27.9°C | 9.6°C | 80 mm | 74% | 0.7 m/s | 4.1 |
| 2024 | 21.4°C | 16.4°C | 11.3°C | 29.9°C | 7.0°C | 168 mm | 80% | 0.7 m/s | 3.9 |
| 2023 | 22.1°C | 16.4°C | 10.7°C | 24.7°C | 5.2°C | 53 mm | 74% | 0.8 m/s | 4 |
| 2022 | 20.7°C | 16.3°C | 11.9°C | 24.4°C | 7.9°C | 67 mm | 86% | 0.7 m/s | 3.7 |
| 2021 ❄️ | 20.3°C | 14.7°C | 9.2°C | 25.1°C | 3.2°C | 19 mm | 79% | 0.6 m/s | 4.6 |
| 2020 | 20.5°C | 15.5°C | 10.6°C | 24.0°C | 6.0°C | 82 mm | 82% | 0.7 m/s | 3.9 |
| 2019 | 24.3°C | 18.2°C | 12.1°C | 29.4°C | 7.0°C | 14 mm | 72% | 0.7 m/s | 4.4 |
| 2018 🔥 | 26.2°C | 20.1°C | 13.9°C | 32.0°C | 9.6°C | 20 mm | 66% | 0.7 m/s | 4.6 |
| 2017 | 21.4°C | 15.8°C | 10.2°C | 24.9°C | 5.3°C | 34 mm | 78% | 0.7 m/s | 4.3 |
| 2016 | 26.2°C | 19.8°C | 13.5°C | 32.7°C | 9.1°C | 28 mm | 63% | 0.7 m/s | 4.1 |
| 2015 🌧️ | 21.4°C | 16.3°C | 11.2°C | 29.4°C | 5.3°C | 216 mm | 79% | 0.8 m/s | 3.6 |
| 2014 | 22.3°C | 17.0°C | 11.7°C | 28.7°C | 6.8°C | 67 mm | 78% | 0.6 m/s | 3.9 |
| 2013 | 22.4°C | 16.4°C | 10.4°C | 27.9°C | 6.9°C | 37 mm | 71% | 0.6 m/s | 4.4 |
| 2012 | 22.7°C | 17.0°C | 11.4°C | 29.7°C | 6.4°C | 49 mm | 73% | 0.6 m/s | 4.1 |
| 2011 | 21.7°C | 16.3°C | 10.8°C | 27.0°C | 5.9°C | 82 mm | 74% | 0.7 m/s | 3.8 |
| 2010 | 23.4°C | 17.5°C | 11.6°C | 27.4°C | 6.4°C | 35 mm | 70% | 0.6 m/s | 4.2 |
| 2009 | 20.6°C | 16.1°C | 11.6°C | 25.5°C | 5.6°C | 52 mm | 79% | 0.8 m/s | 3.6 |
| 2008 | 20.0°C | 14.8°C | 9.5°C | 27.3°C | 1.8°C | 126 mm | 76% | 0.8 m/s | 3.7 |
| 2007 | 23.1°C | 17.4°C | 11.7°C | 27.9°C | 8.8°C | 53 mm | 72% | 0.7 m/s | 3.9 |
| 2006 | 23.7°C | 16.5°C | 9.3°C | 30.5°C | 2.9°C | 37 mm | 56% | 0.7 m/s | 4.7 |
| 2005 | 25.8°C | 19.4°C | 13.0°C | 30.1°C | 9.6°C | 15 mm | 68% | 0.7 m/s | 4.4 |
| 2004 | 25.1°C | 18.6°C | 12.0°C | 31.2°C | 6.8°C | 13 mm | 64% | 0.6 m/s | 4.4 |
| 2003 | 21.9°C | 16.5°C | 11.2°C | 27.7°C | 8.9°C | 71 mm | 76% | 0.7 m/s | 3.6 |
| 2002 | 23.8°C | 18.1°C | 12.4°C | 28.0°C | 9.0°C | 31 mm | 74% | 0.6 m/s | 4.1 |
| 2001 | 22.9°C | 17.1°C | 11.2°C | 28.2°C | 6.5°C | 72 mm | 75% | 0.6 m/s | 4.2 |
| 2000 | 20.4°C | 15.9°C | 11.4°C | 26.3°C | 5.0°C | 94 mm | 86% | 0.7 m/s | 3.7 |
| 1999 | 20.0°C | 15.0°C | 10.0°C | 23.8°C | 5.3°C | 96 mm | 79% | 0.7 m/s | 3.9 |
| 1998 | 24.6°C | 18.6°C | 12.6°C | 31.9°C | 7.0°C | 75 mm | 64% | 0.7 m/s | 3.8 |
| 1997 | 25.2°C | 18.0°C | 10.8°C | 28.9°C | 5.8°C | 6 mm | 58% | 0.7 m/s | 4.7 |
| 1996 | 23.6°C | 16.6°C | 9.5°C | 31.3°C | 3.4°C | 10 mm | 55% | 0.7 m/s | 4.4 |
| 1995 | 21.8°C | 15.5°C | 9.1°C | 25.1°C | 5.0°C | 8 mm | 61% | 0.7 m/s | 4.4 |
| 1994 | 23.2°C | 17.0°C | 10.7°C | 28.2°C | 3.7°C | 56 mm | 69% | 0.7 m/s | 4.3 |
| 1993 | 24.4°C | 18.0°C | 11.5°C | 29.0°C | 8.4°C | 19 mm | 66% | 0.7 m/s | 4.2 |
| 1992 | 20.9°C | 15.9°C | 10.9°C | 25.7°C | 5.6°C | 64 mm | 80% | 0.7 m/s | 3.9 |
| 1991 | 24.2°C | 17.2°C | 10.2°C | 30.3°C | 5.8°C | 5 mm | 56% | 0.7 m/s | 4.6 |
| 1990 | 19.8°C | 16.4°C | 13.0°C | 24.9°C | 4.3°C | 162 mm | 88% | 0.8 m/s | 3 |
| 1989 | 20.7°C | 16.9°C | 13.1°C | 24.4°C | 9.1°C | 179 mm | 89% | 0.8 m/s | 3.6 |
| 1988 | 20.1°C | 16.2°C | 12.3°C | 23.8°C | 8.5°C | 192 mm | 88% | 0.8 m/s | 2.9 |
| 1987 | 23.8°C | 17.2°C | 10.6°C | 29.4°C | 5.3°C | 25 mm | 66% | 0.7 m/s | 4.4 |
| 1986 | 25.9°C | 18.8°C | 11.6°C | 35.2°C | 6.1°C | 21 mm | 52% | 0.8 m/s | 4.6 |
| 1985 | 21.9°C | 16.8°C | 11.6°C | 28.1°C | 5.8°C | 102 mm | 73% | 0.7 m/s | 4 |
| 1984 | 21.0°C | 15.6°C | 10.3°C | 26.7°C | 5.1°C | 90 mm | 79% | 0.7 m/s | 4.1 |
| 1983 | 20.7°C | 15.7°C | 10.6°C | 27.9°C | 4.8°C | 105 mm | 74% | 0.7 m/s | — |
| 1982 | 22.4°C | 16.5°C | 10.5°C | 25.9°C | 4.2°C | 11 mm | 72% | 0.7 m/s | — |
| 1981 | 24.1°C | 17.9°C | 11.8°C | 27.8°C | 5.9°C | 77 mm | 66% | 0.7 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 22.6°C with lows near 11.3°C (mean 17°C), based on 45 years of NASA POWER data.
April averages 65 mm of rainfall in Muswellbrook, about average for rainfall. The wettest on record was 216 mm in 2015.
The hottest April reached 35.2°C in 1986. The coldest dipped to 1.8°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 11°C to 11.1°C while daytime highs eased from 22°C to 21.6°C, narrowing the gap between day and night.
April is close to Muswellbrook's year-round average and about average for rainfall, so plan for around 22.6°C daytime highs and 11.3°C at night.
Not quite — April is the 6th coolest month in Muswellbrook, averaging 17°C.
For April in Muswellbrook, pack light layers you can adjust through the day, with typical highs of 22.6°C and lows of 11.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 72% — moderately humid.
Average wind speed in April is 0.7 m/s. The windiest April on record averaged 0.8 m/s (1986).
The wettest April on record was 2015 with 216 mm. On average, April sees 65 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 Muswellbrook 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.
