April is close to Port Augusta's year-round average, with average highs near 25.9°C and lows around 13.1°C (mean 19.5°C). It is about average for rainfall, averaging 18 mm of rainfall and 52% relative humidity across the period.
April is close to Port Augusta's year-round average. Across 45 years of records, the warmest April in Port Augusta was 2018 — when the month averaged 23.1°C — while the coldest was 1983 at 16.7°C. Typical April days reach 25.9°C with nights near 13.1°C. The long-term trend is warming, about 0.3°C per decade.
April is about average for rainfall in Port Augusta, averaging 18 mm of rainfall. The wettest April on record was 2014 with 102 mm, while the driest was 1997 at 0 mm.
Relative humidity in Port Augusta during April averages 52%. The most humid April was 1989 at 64%, and the least humid was 2005 at 42%.
April receives about 4.6 kWh/m²/day of solar energy in Port Augusta. The sunniest Aprils were 1994, 1997 and 1999, among others at 5 kWh/m²/day, and the cloudiest were 2014 and 2015 at 4.1.
Average wind speed in Port Augusta during April is 3 m/s. The windiest April was 1986 at 3.7 m/s, while the calmest was 2013 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.0°C | 18.9°C | 20.0°C | 20.1°C | 19.7°C | +0.7°C |
| Avg High | 25.5°C | 25.2°C | 26.5°C | 26.4°C | 26.0°C | +0.5°C |
| Avg Low | 12.5°C | 12.5°C | 13.4°C | 13.9°C | 13.5°C | +1°C |
| Avg Rain | 17 mm | 14 mm | 15 mm | 25 mm | 18 mm | +1 mm |
April temperatures in Port Augusta have risen by about 0.9°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 5.2°C (1983) to a record high of 38.3°C (2018).
Rainfall in April is about average for rainfall, averaging 18 mm, with a wettest year of 102 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Port Augusta
April is one of the best times to visit Port Augusta. Expect days averaging 25.9°C and nights around 13.1°C (mean 19.5°C) — close to Port Augusta's yearly average — with low rainfall (18 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 27.6°C | 21.6°C | 15.6°C | 34.2°C | 10.5°C | 3 mm | 49% | 2.9 m/s | 4.6 |
| 2024 | 24.3°C | 18.0°C | 11.8°C | 29.0°C | 8.3°C | 10 mm | 57% | 3.2 m/s | 4.9 |
| 2023 | 25.4°C | 19.1°C | 12.9°C | 30.6°C | 9.1°C | 23 mm | 53% | 3.2 m/s | 4.5 |
| 2022 | 27.1°C | 20.9°C | 14.8°C | 33.7°C | 9.8°C | 33 mm | 52% | 3 m/s | 4.3 |
| 2021 | 26.7°C | 19.9°C | 13.0°C | 34.4°C | 9.6°C | 4 mm | 49% | 2.8 m/s | 4.8 |
| 2020 | 25.0°C | 18.9°C | 12.8°C | 31.2°C | 8.7°C | 36 mm | 58% | 3 m/s | 4.3 |
| 2019 | 27.6°C | 20.8°C | 14.0°C | 35.3°C | 9.3°C | 4 mm | 43% | 3.4 m/s | 4.8 |
| 2018 🔥 | 30.1°C | 23.1°C | 16.1°C | 38.3°C | 11.0°C | 2 mm | 44% | 3.1 m/s | 4.9 |
| 2017 | 25.8°C | 19.9°C | 14.0°C | 32.8°C | 9.4°C | 15 mm | 52% | 2.9 m/s | 4.2 |
| 2016 | 26.9°C | 20.5°C | 14.0°C | 33.9°C | 9.0°C | 12 mm | 52% | 3.2 m/s | 4.5 |
| 2015 | 23.1°C | 17.7°C | 12.3°C | 32.6°C | 6.6°C | 55 mm | 58% | 3.2 m/s | 4.1 |
| 2014 🌧️ | 25.0°C | 19.4°C | 13.8°C | 36.5°C | 9.6°C | 102 mm | 63% | 3.1 m/s | 4.1 |
| 2013 | 27.0°C | 20.7°C | 14.4°C | 32.0°C | 10.7°C | 20 mm | 50% | 2.5 m/s | 4.5 |
| 2012 | 26.1°C | 19.7°C | 13.4°C | 35.4°C | 7.1°C | 6 mm | 53% | 2.8 m/s | 4.7 |
| 2011 | 25.0°C | 18.6°C | 12.2°C | 30.4°C | 8.8°C | 8 mm | 57% | 2.8 m/s | 4.7 |
| 2010 | 27.0°C | 20.8°C | 14.7°C | 32.2°C | 8.9°C | 22 mm | 53% | 2.7 m/s | 4.4 |
| 2009 | 25.9°C | 19.6°C | 13.3°C | 36.0°C | 9.4°C | 18 mm | 52% | 3.1 m/s | 4.7 |
| 2008 | 25.2°C | 18.8°C | 12.4°C | 31.7°C | 6.6°C | 13 mm | 45% | 3.2 m/s | 4.6 |
| 2007 | 26.3°C | 20.0°C | 13.6°C | 32.7°C | 9.9°C | 29 mm | 54% | 3 m/s | 4.6 |
| 2006 | 24.1°C | 17.9°C | 11.7°C | 30.6°C | 7.4°C | 26 mm | 55% | 3.4 m/s | 4.2 |
| 2005 | 29.5°C | 22.3°C | 15.1°C | 38.1°C | 9.8°C | 5 mm | 42% | 3.2 m/s | 4.9 |
| 2004 | 27.3°C | 20.8°C | 14.4°C | 35.9°C | 8.8°C | 3 mm | 47% | 3.1 m/s | 4.5 |
| 2003 | 26.4°C | 19.7°C | 13.0°C | 32.6°C | 7.9°C | 12 mm | 49% | 2.7 m/s | 4.5 |
| 2002 | 28.9°C | 21.9°C | 14.9°C | 34.1°C | 9.4°C | 2 mm | 43% | 2.8 m/s | 4.5 |
| 2001 | 25.9°C | 19.2°C | 12.6°C | 33.5°C | 8.5°C | 8 mm | 48% | 3.1 m/s | 4.8 |
| 2000 | 25.8°C | 19.5°C | 13.1°C | 30.9°C | 7.9°C | 32 mm | 56% | 3 m/s | 4.7 |
| 1999 | 24.7°C | 18.0°C | 11.3°C | 30.5°C | 6.3°C | 5 mm | 50% | 2.7 m/s | 5 |
| 1998 | 23.7°C | 17.7°C | 11.7°C | 34.1°C | 7.4°C | 40 mm | 53% | 3.1 m/s | 4.4 |
| 1997 | 26.7°C | 19.8°C | 12.9°C | 31.9°C | 8.1°C | 0 mm | 50% | 2.8 m/s | 5 |
| 1996 | 24.0°C | 18.0°C | 12.1°C | 34.8°C | 8.8°C | 3 mm | 56% | 3.4 m/s | 4.6 |
| 1995 | 23.1°C | 17.2°C | 11.2°C | 29.4°C | 7.2°C | 23 mm | 55% | 3 m/s | 4.6 |
| 1994 | 25.7°C | 19.4°C | 13.0°C | 31.5°C | 9.5°C | 2 mm | 50% | 3.1 m/s | 5 |
| 1993 | 27.7°C | 20.6°C | 13.6°C | 33.7°C | 10.5°C | 1 mm | 44% | 2.8 m/s | 4.9 |
| 1992 | 25.1°C | 19.1°C | 13.1°C | 35.1°C | 7.4°C | 35 mm | 56% | 2.8 m/s | 4.4 |
| 1991 | 26.1°C | 19.6°C | 13.2°C | 34.0°C | 9.2°C | 12 mm | 50% | 3.1 m/s | 4.7 |
| 1990 | 25.3°C | 19.2°C | 13.0°C | 31.7°C | 7.3°C | 23 mm | 55% | 3.6 m/s | 4.7 |
| 1989 | 24.7°C | 18.6°C | 12.6°C | 31.4°C | 8.8°C | 41 mm | 64% | 2.8 m/s | 4.6 |
| 1988 | 25.9°C | 19.4°C | 12.9°C | 29.8°C | 8.9°C | 6 mm | 55% | 3.3 m/s | 4.7 |
| 1987 | 26.4°C | 19.6°C | 12.7°C | 33.7°C | 8.5°C | 5 mm | 47% | 3 m/s | 4.8 |
| 1986 | 25.7°C | 18.8°C | 12.0°C | 38.1°C | 7.7°C | 5 mm | 50% | 3.7 m/s | 5 |
| 1985 | 25.5°C | 19.0°C | 12.4°C | 38.2°C | 8.5°C | 12 mm | 48% | 3.1 m/s | 4.8 |
| 1984 | 24.7°C | 18.3°C | 11.9°C | 32.0°C | 7.5°C | 33 mm | 56% | 3.1 m/s | 4.5 |
| 1983 ❄️ | 22.4°C | 16.7°C | 11.0°C | 26.3°C | 5.2°C | 42 mm | 58% | 3.5 m/s | — |
| 1982 | 25.8°C | 19.2°C | 12.6°C | 32.7°C | 8.5°C | 7 mm | 50% | 2.9 m/s | — |
| 1981 | 28.8°C | 21.7°C | 14.6°C | 34.3°C | 7.6°C | 3 mm | 46% | 2.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 25.9°C with lows near 13.1°C (mean 19.5°C), based on 45 years of NASA POWER data.
April averages 18 mm of rainfall in Port Augusta, about average for rainfall. The wettest on record was 102 mm in 2014.
The hottest April reached 38.3°C in 2018. The coldest dipped to 5.2°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.9°C. Daytime highs moved from 25.4°C to 26.2°C and overnight lows from 12.5°C to 13.6°C over the same span.
April is close to Port Augusta's year-round average and about average for rainfall, so plan for around 25.9°C daytime highs and 13.1°C at night.
Not quite — April is the 7th coolest month in Port Augusta, averaging 19.5°C.
For April in Port Augusta, pack light layers you can adjust through the day, with typical highs of 25.9°C and lows of 13.1°C.
Relative humidity in April averages 52% — relatively dry.
Average wind speed in April is 3 m/s. The windiest April on record averaged 3.7 m/s (1986).
The wettest April on record was 2014 with 102 mm. On average, April sees 18 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 Port Augusta 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.
