April is one of the cooler months of the year in Sidney, with average highs near 11.8°C and lows around 6.7°C (mean 9.3°C). It is one of the drier months, averaging 73 mm of rainfall and 80% relative humidity across the period.
April is one of the cooler months of the year in Sidney. Across 45 years of records, the warmest April in Sidney was 2016 — when the month averaged 11.8°C — while the coldest were 2008 and 2011 at 6.9°C. Typical April days reach 11.8°C with nights near 6.7°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Sidney, averaging 73 mm of rainfall. The wettest April on record was 1981 with 133 mm, while the driest was 2004 at 15 mm.
Relative humidity in Sidney during April averages 80%. The most humid April was 2025 at 84%, and the least humid was 1983 at 74%.
April receives about 4.3 kWh/m²/day of solar energy in Sidney. The sunniest April was 2004 at 5.5 kWh/m²/day, and the cloudiest was 1986 at 3.7.
Average wind speed in Sidney during April is 2.2 m/s. The windiest April was 2010 at 2.8 m/s, while the calmest was 2004 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.1°C | 9.6°C | 9.1°C | 9.3°C | 8.9°C | -0.2°C |
| Avg High | 11.8°C | 12.2°C | 11.6°C | 11.7°C | 11.3°C | -0.5°C |
| Avg Low | 6.4°C | 7.1°C | 6.5°C | 6.9°C | 6.4°C | 0°C |
| Avg Rain | 82 mm | 75 mm | 62 mm | 81 mm | 62 mm | -19 mm |
April temperatures in Sidney have stayed relatively stable across the record.
April has ranged from a record low of 1.4°C (2022) to a record high of 23.1°C (2004).
Rainfall in April is one of the drier months, averaging 73 mm, with a wettest year of 133 mm.
A good time to visit Sidney
April is a good time to visit Sidney, with days averaging 11.8°C and nights around 6.7°C (mean 9.3°C, cooler than Sidney's yearly average) and moderate rainfall. August and July 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 | 11.8°C | 9.3°C | 6.8°C | 16.9°C | 4.9°C | 49 mm | 84% | 2.1 m/s | 5.1 |
| 2024 | 11.0°C | 8.7°C | 6.3°C | 14.6°C | 4.6°C | 68 mm | 82% | 2.2 m/s | 4.6 |
| 2023 | 10.5°C | 8.3°C | 6.2°C | 18.9°C | 3.7°C | 87 mm | 83% | 2.4 m/s | 3.9 |
| 2022 | 10.0°C | 7.7°C | 5.4°C | 16.1°C | 1.4°C | 95 mm | 80% | 2.6 m/s | 4.2 |
| 2021 | 12.4°C | 9.6°C | 6.8°C | 17.7°C | 3.1°C | 40 mm | 77% | 1.9 m/s | 5.2 |
| 2020 | 12.1°C | 9.5°C | 6.8°C | 16.1°C | 3.3°C | 36 mm | 79% | 1.9 m/s | 4.8 |
| 2019 | 12.2°C | 9.7°C | 7.3°C | 17.1°C | 5.8°C | 83 mm | 81% | 2.2 m/s | 4.2 |
| 2018 | 11.7°C | 9.4°C | 7.1°C | 19.9°C | 3.8°C | 114 mm | 82% | 2.3 m/s | 3.8 |
| 2017 | 11.3°C | 9.2°C | 7.0°C | 14.9°C | 4.8°C | 99 mm | 83% | 2.6 m/s | 4 |
| 2016 🔥 | 14.6°C | 11.8°C | 9.0°C | 22.6°C | 6.9°C | 30 mm | 79% | 1.9 m/s | 4.7 |
| 2015 | 12.1°C | 9.5°C | 6.9°C | 17.1°C | 4.6°C | 42 mm | 78% | 2.2 m/s | 4.6 |
| 2014 | 12.1°C | 9.5°C | 6.9°C | 20.4°C | 5.3°C | 80 mm | 81% | 2.1 m/s | 4.5 |
| 2013 | 11.0°C | 8.7°C | 6.5°C | 16.1°C | 3.4°C | 99 mm | 81% | 2.2 m/s | 4.1 |
| 2012 | 11.3°C | 9.0°C | 6.7°C | 15.5°C | 3.8°C | 88 mm | 82% | 1.9 m/s | 4 |
| 2011 | 9.1°C | 6.9°C | 4.7°C | 14.1°C | 3.2°C | 94 mm | 81% | 2.5 m/s | 4 |
| 2010 | 11.4°C | 8.9°C | 6.4°C | 16.6°C | 2.9°C | 76 mm | 80% | 2.8 m/s | 4.1 |
| 2009 | 11.5°C | 8.8°C | 6.0°C | 16.8°C | 2.2°C | 55 mm | 78% | 1.8 m/s | 4.8 |
| 2008 ❄️ | 9.3°C | 6.9°C | 4.6°C | 17.1°C | 2.6°C | 48 mm | 79% | 2.2 m/s | 4.2 |
| 2007 | 11.2°C | 8.8°C | 6.4°C | 19.1°C | 2.4°C | 68 mm | 80% | 2 m/s | 4.1 |
| 2006 | 12.0°C | 9.3°C | 6.6°C | 18.8°C | 4.5°C | 66 mm | 80% | 2 m/s | 4.1 |
| 2005 | 12.6°C | 10.1°C | 7.6°C | 19.2°C | 4.3°C | 84 mm | 80% | 2.4 m/s | 4.5 |
| 2004 | 14.2°C | 11.0°C | 7.7°C | 23.1°C | 4.5°C | 15 mm | 75% | 1.6 m/s | 5.5 |
| 2003 | 11.3°C | 9.0°C | 6.8°C | 16.4°C | 4.2°C | 92 mm | 82% | 2.2 m/s | 3.9 |
| 2002 | 11.2°C | 8.7°C | 6.2°C | 16.7°C | 2.4°C | 66 mm | 81% | 2.2 m/s | 4.4 |
| 2001 | 11.0°C | 8.7°C | 6.4°C | 17.6°C | 3.5°C | 68 mm | 79% | 2.1 m/s | 4.2 |
| 2000 | 12.0°C | 9.5°C | 7.0°C | 15.8°C | 4.1°C | 59 mm | 80% | 2 m/s | 4.4 |
| 1999 | 11.5°C | 8.6°C | 5.7°C | 18.8°C | 3.2°C | 45 mm | 76% | 2.2 m/s | 4.7 |
| 1998 | 12.2°C | 9.6°C | 7.1°C | 22.0°C | 5.4°C | 30 mm | 76% | 1.8 m/s | 4.9 |
| 1997 | 11.7°C | 9.1°C | 6.4°C | 17.6°C | 3.1°C | 89 mm | 80% | 2.3 m/s | 4.5 |
| 1996 | 12.4°C | 10.0°C | 7.7°C | 18.2°C | 4.3°C | 114 mm | 82% | 2.5 m/s | 3.9 |
| 1995 | 12.1°C | 9.6°C | 7.0°C | 18.1°C | 4.4°C | 58 mm | 76% | 2.2 m/s | 4.7 |
| 1994 | 12.8°C | 10.2°C | 7.7°C | 17.2°C | 4.5°C | 64 mm | 81% | 2.1 m/s | 3.9 |
| 1993 | 11.7°C | 9.5°C | 7.2°C | 15.2°C | 5.4°C | 97 mm | 83% | 2.4 m/s | 3.9 |
| 1992 | 13.0°C | 10.4°C | 7.9°C | 19.7°C | 4.6°C | 98 mm | 78% | 2.3 m/s | 4.2 |
| 1991 | 11.7°C | 9.0°C | 6.3°C | 17.7°C | 3.6°C | 94 mm | 79% | 2.2 m/s | 4.5 |
| 1990 | 12.9°C | 10.2°C | 7.5°C | 18.9°C | 6.0°C | 65 mm | 81% | 2 m/s | 4.2 |
| 1989 | 13.5°C | 10.4°C | 7.3°C | 20.6°C | 4.7°C | 58 mm | 77% | 1.8 m/s | 4.7 |
| 1988 | 12.0°C | 9.3°C | 6.5°C | 17.0°C | 2.6°C | 97 mm | 81% | 2.3 m/s | 3.9 |
| 1987 | 12.9°C | 10.0°C | 7.1°C | 21.8°C | 3.8°C | 68 mm | 79% | 2.1 m/s | 4.4 |
| 1986 | 10.6°C | 8.2°C | 5.8°C | 16.3°C | 3.3°C | 79 mm | 81% | 2.4 m/s | 3.7 |
| 1985 | 11.0°C | 8.5°C | 6.0°C | 15.4°C | 3.8°C | 77 mm | 80% | 2.2 m/s | 4.2 |
| 1984 | 11.3°C | 8.8°C | 6.4°C | 17.0°C | 4.4°C | 83 mm | 79% | 2.7 m/s | 4.1 |
| 1983 | 12.8°C | 10.0°C | 7.3°C | 18.7°C | 3.8°C | 52 mm | 74% | 1.9 m/s | — |
| 1982 | 10.5°C | 7.8°C | 5.1°C | 20.3°C | 1.7°C | 88 mm | 77% | 2.5 m/s | — |
| 1981 🌧️ | 11.4°C | 8.9°C | 6.5°C | 18.9°C | 3.3°C | 133 mm | 81% | 2.6 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 11.8°C with lows near 6.7°C (mean 9.3°C), based on 45 years of NASA POWER data.
April averages 73 mm of rainfall in Sidney, one of the drier months. The wettest on record was 133 mm in 1981.
The hottest April reached 23.1°C in 2004. The coldest dipped to 1.4°C in 2022.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have fallen by about 0.1°C. Daytime highs moved from 11.4°C to 11.1°C and overnight lows from 6.3°C to 6.3°C over the same span.
April is one of the cooler months of the year in Sidney and one of the drier months, so plan for around 11.8°C daytime highs and 6.7°C at night.
Not quite — April is the 6th coolest month in Sidney, averaging 9.3°C.
For April in Sidney, pack warm layers and a jacket for chilly mornings, with typical highs of 11.8°C and lows of 6.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 80% — quite humid.
Average wind speed in April is 2.2 m/s. The windiest April on record averaged 2.8 m/s (2010).
The wettest April on record was 1981 with 133 mm. On average, April sees 73 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 Sidney 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.
