April is one of the warmer months of the year in Colac, with average highs near 18.5°C and lows around 11.6°C (mean 15.1°C). It is about average for rainfall, averaging 57 mm of rainfall and 75% relative humidity across the period.
April is one of the warmer months of the year in Colac. Across 45 years of records, the warmest April in Colac was 2025 — when the month averaged 17.3°C — while the coldest was 1995 at 12.2°C. Typical April days reach 18.5°C with nights near 11.6°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Colac, averaging 57 mm of rainfall. The wettest April on record was 2001 with 142 mm, while the driest was 2019 at 9 mm.
Relative humidity in Colac during April averages 75%. The most humid April was 2011 at 81%, and the least humid was 2019 at 68%.
April receives about 3.2 kWh/m²/day of solar energy in Colac. The sunniest Aprils were 1993 and 2005 at 3.6 kWh/m²/day, and the cloudiest was 2020 at 2.8.
Average wind speed in Colac during April is 2.3 m/s. The windiest April was 2006 at 2.8 m/s, while the calmest were 1999, 2002 and 2007, among others at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.1°C | 14.3°C | 15.3°C | 15.4°C | 15.3°C | +0.2°C |
| Avg High | 18.7°C | 17.7°C | 18.8°C | 18.8°C | 18.5°C | -0.2°C |
| Avg Low | 11.5°C | 10.9°C | 11.8°C | 12.0°C | 12.1°C | +0.6°C |
| Avg Rain | 58 mm | 59 mm | 62 mm | 50 mm | 55 mm | -2 mm |
April temperatures in Colac have risen by about 0.8°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 6.3°C (1995) to a record high of 30.1°C (2014).
Rainfall in April is about average for rainfall, averaging 57 mm, with a wettest year of 142 mm.
A good time to visit Colac
April is a good time to visit Colac, with days averaging 18.5°C and nights around 11.6°C (mean 15.1°C, warmer than Colac'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 🔥 | 20.8°C | 17.3°C | 13.7°C | 28.2°C | 9.8°C | 22 mm | 73% | 2.1 m/s | 3.3 |
| 2024 | 17.6°C | 14.5°C | 11.4°C | 25.8°C | 9.0°C | 71 mm | 77% | 2.2 m/s | 2.9 |
| 2023 | 18.7°C | 15.3°C | 12.0°C | 24.4°C | 7.7°C | 49 mm | 77% | 2.1 m/s | 3.1 |
| 2022 | 19.0°C | 16.1°C | 13.2°C | 24.9°C | 10.0°C | 41 mm | 77% | 2.1 m/s | 2.9 |
| 2021 | 18.4°C | 14.9°C | 11.4°C | 28.4°C | 7.3°C | 25 mm | 74% | 2.4 m/s | 3.2 |
| 2020 | 16.6°C | 13.6°C | 10.7°C | 21.9°C | 7.5°C | 126 mm | 80% | 2.6 m/s | 2.8 |
| 2019 | 19.6°C | 15.7°C | 11.8°C | 28.4°C | 9.2°C | 9 mm | 68% | 2.2 m/s | 3.3 |
| 2018 | 20.1°C | 16.1°C | 12.2°C | 28.8°C | 10.1°C | 15 mm | 73% | 2.1 m/s | 3.4 |
| 2017 | 18.7°C | 15.5°C | 12.3°C | 24.8°C | 8.1°C | 99 mm | 78% | 2.2 m/s | 3.1 |
| 2016 | 19.9°C | 16.2°C | 12.5°C | 26.1°C | 10.1°C | 35 mm | 71% | 2.2 m/s | 3.2 |
| 2015 | 16.8°C | 13.8°C | 10.9°C | 24.6°C | 8.5°C | 38 mm | 78% | 2.3 m/s | 3 |
| 2014 | 18.3°C | 15.3°C | 12.2°C | 30.1°C | 7.4°C | 86 mm | 77% | 2.3 m/s | 3 |
| 2013 | 18.5°C | 15.2°C | 11.9°C | 24.8°C | 8.8°C | 31 mm | 74% | 2.3 m/s | 3.2 |
| 2012 | 19.3°C | 15.6°C | 11.9°C | 26.9°C | 8.9°C | 53 mm | 75% | 2.2 m/s | 3.5 |
| 2011 | 18.1°C | 14.7°C | 11.4°C | 23.9°C | 9.1°C | 61 mm | 81% | 2.1 m/s | 3.3 |
| 2010 | 19.0°C | 16.1°C | 13.2°C | 25.0°C | 9.1°C | 77 mm | 78% | 2.3 m/s | 2.9 |
| 2009 | 18.0°C | 14.6°C | 11.1°C | 26.2°C | 7.3°C | 77 mm | 75% | 2.3 m/s | 3.3 |
| 2008 | 18.2°C | 14.6°C | 11.1°C | 23.3°C | 7.3°C | 37 mm | 76% | 2.2 m/s | 3.3 |
| 2007 | 20.0°C | 16.4°C | 12.7°C | 25.9°C | 10.6°C | 37 mm | 74% | 2 m/s | 3.5 |
| 2006 | 16.6°C | 13.7°C | 10.7°C | 23.2°C | 8.1°C | 94 mm | 74% | 2.8 m/s | 2.9 |
| 2005 | 21.2°C | 17.0°C | 12.7°C | 29.5°C | 10.8°C | 32 mm | 71% | 2.3 m/s | 3.6 |
| 2004 | 18.2°C | 14.9°C | 11.6°C | 25.5°C | 9.5°C | 52 mm | 75% | 2.3 m/s | 3.1 |
| 2003 | 18.5°C | 15.3°C | 12.1°C | 24.5°C | 9.6°C | 53 mm | 77% | 2.3 m/s | 3.5 |
| 2002 | 19.8°C | 16.2°C | 12.5°C | 26.0°C | 10.5°C | 40 mm | 76% | 2 m/s | 3.4 |
| 2001 🌧️ | 18.1°C | 14.8°C | 11.5°C | 25.0°C | 9.0°C | 142 mm | 76% | 2.5 m/s | 3 |
| 2000 | 19.3°C | 15.7°C | 12.1°C | 25.1°C | 8.8°C | 55 mm | 75% | 2.2 m/s | 3.4 |
| 1999 | 17.3°C | 14.0°C | 10.8°C | 23.0°C | 7.4°C | 22 mm | 75% | 2 m/s | 3.3 |
| 1998 | 17.0°C | 13.8°C | 10.6°C | 27.6°C | 8.9°C | 70 mm | 76% | 2.2 m/s | 2.9 |
| 1997 | 18.3°C | 14.6°C | 10.8°C | 25.1°C | 8.6°C | 22 mm | 71% | 2.3 m/s | 3.2 |
| 1996 | 15.7°C | 13.1°C | 10.5°C | 21.1°C | 8.0°C | 65 mm | 80% | 2.7 m/s | 3 |
| 1995 ❄️ | 15.6°C | 12.2°C | 8.8°C | 22.7°C | 6.3°C | 127 mm | 79% | 2.6 m/s | 3.1 |
| 1994 | 18.6°C | 14.8°C | 11.1°C | 26.0°C | 7.7°C | 45 mm | 74% | 2.3 m/s | 3.2 |
| 1993 | 20.0°C | 16.0°C | 11.9°C | 26.3°C | 10.2°C | 14 mm | 70% | 2 m/s | 3.6 |
| 1992 | 18.1°C | 14.8°C | 11.5°C | 28.2°C | 7.1°C | 109 mm | 78% | 2.1 m/s | 3.3 |
| 1991 | 17.8°C | 14.3°C | 10.7°C | 25.7°C | 7.2°C | 37 mm | 75% | 2.3 m/s | 3.2 |
| 1990 | 18.5°C | 15.5°C | 12.4°C | 25.5°C | 8.9°C | 77 mm | 77% | 2.6 m/s | 3.2 |
| 1989 | 19.1°C | 15.8°C | 12.5°C | 25.0°C | 9.4°C | 69 mm | 80% | 2.1 m/s | 3.1 |
| 1988 | 19.4°C | 16.0°C | 12.6°C | 23.7°C | 10.1°C | 25 mm | 76% | 2.4 m/s | 3.1 |
| 1987 | 19.2°C | 15.2°C | 11.2°C | 26.8°C | 7.9°C | 37 mm | 71% | 2.1 m/s | 3.3 |
| 1986 | 18.1°C | 14.6°C | 11.2°C | 26.5°C | 8.0°C | 95 mm | 72% | 2.7 m/s | 3.3 |
| 1985 | 19.0°C | 15.6°C | 12.3°C | 29.0°C | 7.2°C | 105 mm | 78% | 2.3 m/s | 3.5 |
| 1984 | 17.8°C | 14.3°C | 10.8°C | 23.3°C | 7.9°C | 50 mm | 77% | 2.3 m/s | 3.3 |
| 1983 | 16.1°C | 13.1°C | 10.0°C | 22.2°C | 8.0°C | 71 mm | 77% | 2.3 m/s | — |
| 1982 | 19.2°C | 15.2°C | 11.3°C | 27.3°C | 6.6°C | 45 mm | 73% | 2.2 m/s | — |
| 1981 | 20.0°C | 16.0°C | 12.0°C | 27.0°C | 6.4°C | 25 mm | 71% | 2.5 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 18.5°C with lows near 11.6°C (mean 15.1°C), based on 45 years of NASA POWER data.
April averages 57 mm of rainfall in Colac, about average for rainfall. The wettest on record was 142 mm in 2001.
The hottest April reached 30.1°C in 2014. The coldest dipped to 6.3°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.8°C. Daytime highs moved from 18.4°C to 18.9°C and overnight lows from 11.3°C to 12.3°C over the same span.
April is one of the warmer months of the year in Colac and about average for rainfall, so plan for around 18.5°C daytime highs and 11.6°C at night.
Not quite — April is the 8th coolest month in Colac, averaging 15.1°C.
For April in Colac, pack light layers you can adjust through the day, with typical highs of 18.5°C and lows of 11.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 75% — quite humid.
Average wind speed in April is 2.3 m/s. The windiest April on record averaged 2.8 m/s (2006).
The wettest April on record was 2001 with 142 mm. On average, April sees 57 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 Colac 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.
