April is one of the warmer months of the year in Wollongong, with average highs near 20.5°C and lows around 12°C (mean 16.3°C). It is about average for rainfall, averaging 93 mm of rainfall and 77% relative humidity across the period.
April is one of the warmer months of the year in Wollongong. Across 45 years of records, the warmest April in Wollongong was 2018 — when the month averaged 19.7°C — while the coldest was 1983 at 14.1°C. Typical April days reach 20.5°C with nights near 12°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Wollongong, averaging 93 mm of rainfall. The wettest April on record was 1988 with 489 mm, while the driest was 1997 at 3 mm.
Relative humidity in Wollongong during April averages 77%. The most humid April was 1989 at 90%, and the least humid was 2006 at 58%.
April receives about 3.7 kWh/m²/day of solar energy in Wollongong. The sunniest Aprils were 2006 and 2021 at 4.5 kWh/m²/day, and the cloudiest was 1988 at 2.6.
Average wind speed in Wollongong during April is 0.5 m/s. The windiest Aprils were 2017, 2023 and 2025, among others at 0.6 m/s, while the calmest were 2021, 2022 and 2024, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.9°C | 15.9°C | 16.6°C | 16.7°C | 16.1°C | +0.2°C |
| Avg High | 20.0°C | 20.3°C | 20.9°C | 20.9°C | 20.1°C | +0.1°C |
| Avg Low | 11.8°C | 11.5°C | 12.3°C | 12.4°C | 12.0°C | +0.2°C |
| Avg Rain | 163 mm | 78 mm | 69 mm | 73 mm | 90 mm | -73 mm |
April temperatures in Wollongong have risen by about 0.9°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 4.3°C (2008) to a record high of 34.7°C (1986).
Rainfall in April is about average for rainfall, averaging 93 mm, with a wettest year of 489 mm.
A good time to visit Wollongong
April is a good time to visit Wollongong, with days averaging 20.5°C and nights around 12°C (mean 16.3°C, close to Wollongong's yearly average) and higher rainfall. January and December 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 | 22.2°C | 17.9°C | 13.5°C | 27.6°C | 8.0°C | 54 mm | 76% | 0.6 m/s | 3.8 |
| 2024 | 20.0°C | 15.8°C | 11.6°C | 29.2°C | 8.1°C | 176 mm | 81% | 0.5 m/s | 3.8 |
| 2023 | 20.6°C | 16.3°C | 12.0°C | 25.0°C | 7.2°C | 88 mm | 77% | 0.6 m/s | 3.5 |
| 2022 | 19.0°C | 15.9°C | 12.7°C | 23.0°C | 9.5°C | 145 mm | 88% | 0.5 m/s | 3.3 |
| 2021 | 19.6°C | 14.9°C | 10.2°C | 24.7°C | 4.8°C | 8 mm | 77% | 0.5 m/s | 4.5 |
| 2020 | 19.4°C | 15.7°C | 11.9°C | 23.5°C | 7.3°C | 66 mm | 81% | 0.5 m/s | 3.6 |
| 2019 | 22.6°C | 17.7°C | 12.9°C | 27.2°C | 8.9°C | 24 mm | 74% | 0.5 m/s | 4.2 |
| 2018 🔥 | 24.9°C | 19.7°C | 14.4°C | 31.6°C | 10.9°C | 21 mm | 68% | 0.5 m/s | 4.1 |
| 2017 | 19.1°C | 15.2°C | 11.4°C | 22.8°C | 6.0°C | 37 mm | 82% | 0.6 m/s | 4 |
| 2016 | 23.3°C | 18.4°C | 13.6°C | 30.8°C | 10.0°C | 24 mm | 73% | 0.5 m/s | 3.6 |
| 2015 | 19.2°C | 15.5°C | 11.8°C | 27.8°C | 8.0°C | 255 mm | 84% | 0.6 m/s | 3 |
| 2014 | 19.3°C | 15.7°C | 12.0°C | 25.0°C | 6.7°C | 67 mm | 85% | 0.5 m/s | 3.6 |
| 2013 | 20.7°C | 16.2°C | 11.7°C | 26.5°C | 7.1°C | 106 mm | 77% | 0.5 m/s | 3.9 |
| 2012 | 19.2°C | 15.5°C | 11.9°C | 23.7°C | 6.6°C | 101 mm | 84% | 0.5 m/s | 3.7 |
| 2011 | 18.9°C | 15.3°C | 11.6°C | 23.1°C | 6.9°C | 71 mm | 80% | 0.5 m/s | 3.5 |
| 2010 | 22.1°C | 17.3°C | 12.6°C | 26.8°C | 7.5°C | 23 mm | 71% | 0.5 m/s | 4.1 |
| 2009 | 19.4°C | 15.9°C | 12.4°C | 25.0°C | 7.6°C | 86 mm | 77% | 0.5 m/s | 3.5 |
| 2008 | 18.6°C | 14.5°C | 10.4°C | 25.3°C | 4.3°C | 74 mm | 78% | 0.6 m/s | 3.6 |
| 2007 | 20.8°C | 16.6°C | 12.3°C | 25.8°C | 9.7°C | 97 mm | 79% | 0.5 m/s | 3.7 |
| 2006 | 21.6°C | 16.1°C | 10.5°C | 28.7°C | 5.5°C | 11 mm | 58% | 0.6 m/s | 4.5 |
| 2005 | 24.0°C | 18.7°C | 13.5°C | 29.7°C | 9.8°C | 23 mm | 71% | 0.5 m/s | 4 |
| 2004 | 21.0°C | 16.9°C | 12.9°C | 26.2°C | 9.9°C | 110 mm | 77% | 0.5 m/s | 3.8 |
| 2003 | 19.4°C | 16.1°C | 12.7°C | 24.2°C | 9.7°C | 120 mm | 82% | 0.6 m/s | 3.4 |
| 2002 | 21.7°C | 17.5°C | 13.3°C | 27.4°C | 9.4°C | 57 mm | 80% | 0.5 m/s | 3.6 |
| 2001 | 22.5°C | 17.4°C | 12.3°C | 28.9°C | 8.5°C | 59 mm | 71% | 0.5 m/s | 3.8 |
| 2000 | 20.1°C | 16.2°C | 12.3°C | 26.2°C | 6.8°C | 49 mm | 81% | 0.5 m/s | 3.6 |
| 1999 | 18.6°C | 15.0°C | 11.5°C | 24.2°C | 7.5°C | 107 mm | 80% | 0.6 m/s | 3.5 |
| 1998 | 21.7°C | 17.4°C | 13.0°C | 31.9°C | 8.2°C | 113 mm | 74% | 0.5 m/s | 3.5 |
| 1997 | 23.0°C | 17.2°C | 11.5°C | 26.8°C | 6.8°C | 3 mm | 64% | 0.5 m/s | 4.3 |
| 1996 | 20.1°C | 15.3°C | 10.4°C | 26.9°C | 4.5°C | 56 mm | 67% | 0.5 m/s | 3.9 |
| 1995 | 19.2°C | 14.6°C | 9.9°C | 24.6°C | 5.2°C | 11 mm | 67% | 0.6 m/s | 4.1 |
| 1994 | 19.7°C | 15.4°C | 11.2°C | 25.8°C | 5.6°C | 113 mm | 80% | 0.5 m/s | 4 |
| 1993 | 22.1°C | 17.1°C | 12.0°C | 27.4°C | 9.1°C | 12 mm | 73% | 0.5 m/s | 4 |
| 1992 | 19.0°C | 15.2°C | 11.5°C | 24.1°C | 7.5°C | 71 mm | 81% | 0.5 m/s | 3.5 |
| 1991 | 21.2°C | 15.9°C | 10.5°C | 30.0°C | 5.1°C | 37 mm | 66% | 0.5 m/s | 4.1 |
| 1990 | 18.8°C | 16.0°C | 13.1°C | 23.6°C | 7.1°C | 259 mm | 88% | 0.5 m/s | 2.9 |
| 1989 | 19.0°C | 16.5°C | 14.0°C | 22.5°C | 10.0°C | 309 mm | 90% | 0.5 m/s | 3 |
| 1988 🌧️ | 18.5°C | 15.8°C | 13.0°C | 22.5°C | 9.0°C | 489 mm | 90% | 0.6 m/s | 2.6 |
| 1987 | 22.1°C | 16.7°C | 11.4°C | 28.5°C | 6.7°C | 32 mm | 71% | 0.5 m/s | 4 |
| 1986 | 23.1°C | 17.3°C | 11.5°C | 34.7°C | 5.1°C | 89 mm | 63% | 0.5 m/s | 4 |
| 1985 | 18.4°C | 15.3°C | 12.2°C | 25.0°C | 6.6°C | 181 mm | 85% | 0.5 m/s | 3.5 |
| 1984 | 18.7°C | 14.9°C | 11.0°C | 24.3°C | 6.4°C | 120 mm | 84% | 0.5 m/s | 3.4 |
| 1983 ❄️ | 17.7°C | 14.1°C | 10.4°C | 21.6°C | 5.5°C | 78 mm | 82% | 0.6 m/s | — |
| 1982 | 21.2°C | 16.0°C | 10.9°C | 25.8°C | 5.0°C | 28 mm | 72% | 0.5 m/s | — |
| 1981 | 21.0°C | 16.4°C | 11.8°C | 24.5°C | 5.5°C | 140 mm | 74% | 0.5 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 20.5°C with lows near 12°C (mean 16.3°C), based on 45 years of NASA POWER data.
April averages 93 mm of rainfall in Wollongong, about average for rainfall. The wettest on record was 489 mm in 1988.
The hottest April reached 34.7°C in 1986. The coldest dipped to 4.3°C in 2008.
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 19.4°C to 20.3°C and overnight lows from 11.3°C to 12°C over the same span.
April is one of the warmer months of the year in Wollongong and about average for rainfall, so plan for around 20.5°C daytime highs and 12°C at night.
Not quite — April is the 7th coolest month in Wollongong, averaging 16.3°C.
For April in Wollongong, pack light layers you can adjust through the day, with typical highs of 20.5°C and lows of 12°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 77% — quite humid.
Average wind speed in April is 0.5 m/s. The windiest April on record averaged 0.6 m/s (1983).
The wettest April on record was 1988 with 489 mm. On average, April sees 93 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 Wollongong 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.
