April is one of the cooler months of the year in Oakville, with average highs near 8.9°C and lows around 2°C (mean 5.5°C). It is about average for rainfall, averaging 60 mm of rainfall and 78% relative humidity across the period.
April is one of the cooler months of the year in Oakville. Across 45 years of records, the warmest April in Oakville was 2010 — when the month averaged 8.5°C — while the coldest was 1995 at 2.9°C. Typical April days reach 8.9°C with nights near 2°C. The long-term trend is warming, about 0.3°C per decade.
April is about average for rainfall in Oakville, averaging 60 mm of rainfall. The wettest April on record was 2017 with 116 mm, while the driest was 1997 at 19 mm.
Relative humidity in Oakville during April averages 78%. The most humid April was 1984 at 85%, and the least humid was 1998 at 72%.
April receives about 4.5 kWh/m²/day of solar energy in Oakville. The sunniest April was 2010 at 5.3 kWh/m²/day, and the cloudiest were 1996 and 2019 at 3.7.
Average wind speed in Oakville during April is 3.9 m/s. The windiest April was 1982 at 4.9 m/s, while the calmest were 1992 and 2001 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.1°C | 5.0°C | 5.6°C | 5.5°C | 6.4°C | +1.3°C |
| Avg High | 8.8°C | 8.6°C | 8.9°C | 8.8°C | 9.7°C | +0.9°C |
| Avg Low | 1.4°C | 1.4°C | 2.3°C | 2.3°C | 3.2°C | +1.8°C |
| Avg Rain | 49 mm | 47 mm | 73 mm | 76 mm | 52 mm | +3 mm |
April temperatures in Oakville have risen by about 1.8°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -10.3°C (1982) to a record high of 23°C (1987).
Rainfall in April is about average for rainfall, averaging 60 mm, with a wettest year of 116 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.
A good time to visit Oakville
April is a good time to visit Oakville, with days averaging 8.9°C and nights around 2°C (mean 5.5°C, cooler than Oakville's yearly average) and moderate rainfall. July and August 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 | 9.8°C | 6.3°C | 2.7°C | 21.1°C | -2.9°C | 45 mm | 75% | 4.2 m/s | 4.6 |
| 2024 | 10.6°C | 7.4°C | 4.3°C | 16.0°C | -0.3°C | 82 mm | 79% | 4.2 m/s | 4.1 |
| 2023 | 10.4°C | 7.0°C | 3.7°C | 20.8°C | -2.5°C | 75 mm | 79% | 3.7 m/s | 4.6 |
| 2022 | 8.7°C | 5.6°C | 2.4°C | 15.4°C | -1.0°C | 42 mm | 77% | 3.9 m/s | 4.6 |
| 2021 | 10.1°C | 6.8°C | 3.5°C | 17.8°C | -1.9°C | 39 mm | 76% | 3.7 m/s | 4.5 |
| 2020 | 8.4°C | 5.3°C | 2.3°C | 12.8°C | -0.9°C | 29 mm | 74% | 4.4 m/s | 4.6 |
| 2019 | 7.9°C | 5.2°C | 2.5°C | 13.2°C | -3.5°C | 77 mm | 83% | 4.1 m/s | 3.7 |
| 2018 | 6.1°C | 3.4°C | 0.6°C | 12.6°C | -2.7°C | 104 mm | 77% | 4.5 m/s | 4.2 |
| 2017 🌧️ | 10.3°C | 7.2°C | 4.1°C | 18.0°C | 0.0°C | 116 mm | 83% | 4.2 m/s | 4.3 |
| 2016 | 7.0°C | 4.0°C | 1.0°C | 16.6°C | -5.7°C | 47 mm | 76% | 3.9 m/s | 4.8 |
| 2015 | 9.1°C | 5.3°C | 1.5°C | 16.5°C | -2.4°C | 63 mm | 78% | 3.8 m/s | 4.8 |
| 2014 | 8.3°C | 4.5°C | 0.7°C | 15.5°C | -4.7°C | 86 mm | 79% | 4 m/s | 4.6 |
| 2013 | 8.5°C | 5.2°C | 2.0°C | 16.3°C | -2.3°C | 83 mm | 79% | 4.7 m/s | 4.4 |
| 2012 | 10.0°C | 6.5°C | 3.0°C | 17.7°C | 0.7°C | 46 mm | 73% | 4.3 m/s | 4.7 |
| 2011 | 8.5°C | 5.5°C | 2.5°C | 15.2°C | -0.4°C | 91 mm | 82% | 4.3 m/s | 3.8 |
| 2010 🔥 | 12.2°C | 8.5°C | 4.7°C | 17.6°C | 0.5°C | 48 mm | 73% | 3.5 m/s | 5.3 |
| 2009 | 9.4°C | 6.2°C | 3.0°C | 17.4°C | -1.6°C | 106 mm | 79% | 4.6 m/s | 4.7 |
| 2008 | 10.9°C | 7.3°C | 3.7°C | 18.2°C | -1.9°C | 51 mm | 79% | 3.4 m/s | 5.2 |
| 2007 | 8.0°C | 5.2°C | 2.4°C | 18.9°C | -4.0°C | 59 mm | 80% | 4.4 m/s | 3.9 |
| 2006 | 10.5°C | 7.1°C | 3.7°C | 18.0°C | -1.7°C | 53 mm | 78% | 3.6 m/s | 5 |
| 2005 | 9.2°C | 6.0°C | 2.9°C | 15.9°C | 0.8°C | 86 mm | 80% | 4 m/s | 4.5 |
| 2004 | 8.7°C | 5.7°C | 2.7°C | 15.4°C | -4.2°C | 78 mm | 83% | 4 m/s | 4.4 |
| 2003 | 6.9°C | 3.2°C | -0.4°C | 15.1°C | -9.8°C | 56 mm | 81% | 4 m/s | 4.5 |
| 2002 | 7.9°C | 4.6°C | 1.4°C | 17.0°C | -3.8°C | 98 mm | 83% | 3.5 m/s | 4 |
| 2001 | 9.2°C | 5.2°C | 1.2°C | 17.3°C | -2.8°C | 50 mm | 80% | 3.1 m/s | 4.7 |
| 2000 | 8.6°C | 5.6°C | 2.7°C | 16.0°C | -1.8°C | 93 mm | 78% | 3.8 m/s | 3.9 |
| 1999 | 9.3°C | 5.8°C | 2.3°C | 15.7°C | -1.9°C | 53 mm | 76% | 3.8 m/s | 4.9 |
| 1998 | 11.0°C | 7.2°C | 3.4°C | 16.9°C | -1.4°C | 39 mm | 72% | 3.2 m/s | 5.1 |
| 1997 | 8.3°C | 4.7°C | 1.2°C | 14.7°C | -5.7°C | 19 mm | 75% | 3.8 m/s | 4.7 |
| 1996 | 6.7°C | 3.2°C | -0.3°C | 13.5°C | -4.8°C | 61 mm | 78% | 4 m/s | 3.7 |
| 1995 ❄️ | 6.5°C | 2.9°C | -0.6°C | 12.9°C | -5.9°C | 35 mm | 76% | 3.9 m/s | 4.2 |
| 1994 | 9.1°C | 4.9°C | 0.7°C | 16.3°C | -4.7°C | 54 mm | 77% | 4.1 m/s | 4.8 |
| 1993 | 8.4°C | 4.9°C | 1.4°C | 15.1°C | -3.1°C | 38 mm | 80% | 3.5 m/s | 4 |
| 1992 | 7.7°C | 4.3°C | 0.9°C | 14.8°C | -5.7°C | 59 mm | 78% | 3.1 m/s | 4.1 |
| 1991 | 9.4°C | 6.2°C | 3.0°C | 16.1°C | -3.0°C | 73 mm | 82% | 4 m/s | 3.9 |
| 1990 | 9.5°C | 5.7°C | 2.0°C | 20.1°C | -3.8°C | 38 mm | 80% | 3.6 m/s | 4.5 |
| 1989 | 7.7°C | 3.8°C | -0.1°C | 14.2°C | -3.9°C | 41 mm | 74% | 3.2 m/s | 4.4 |
| 1988 | 8.5°C | 4.7°C | 1.0°C | 12.7°C | -3.8°C | 34 mm | 78% | 3.5 m/s | 4.1 |
| 1987 | 10.7°C | 7.2°C | 3.8°C | 23.0°C | -2.2°C | 30 mm | 79% | 3.8 m/s | 4.6 |
| 1986 | 9.5°C | 5.9°C | 2.2°C | 16.8°C | -3.0°C | 50 mm | 79% | 3.4 m/s | 4.8 |
| 1985 | 9.5°C | 5.7°C | 1.9°C | 21.0°C | -4.8°C | 59 mm | 83% | 4 m/s | 5.2 |
| 1984 | 8.2°C | 5.1°C | 2.1°C | 16.0°C | -2.0°C | 62 mm | 85% | 3.5 m/s | 4.6 |
| 1983 | 7.8°C | 4.6°C | 1.4°C | 14.5°C | -2.7°C | 64 mm | 82% | 3.9 m/s | — |
| 1982 | 7.3°C | 3.2°C | -0.9°C | 16.8°C | -10.3°C | 47 mm | 77% | 4.9 m/s | — |
| 1981 | 9.7°C | 5.6°C | 1.5°C | 15.3°C | -4.1°C | 52 mm | 74% | 4.5 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 8.9°C with lows near 2°C (mean 5.5°C), based on 45 years of NASA POWER data.
April averages 60 mm of rainfall in Oakville, about average for rainfall. The wettest on record was 116 mm in 2017.
The hottest April reached 23°C in 1987. The coldest dipped to -10.3°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.8°C. Daytime highs moved from 8.5°C to 9.9°C and overnight lows from 1.2°C to 3.3°C over the same span.
April is one of the cooler months of the year in Oakville and about average for rainfall, so plan for around 8.9°C daytime highs and 2°C at night.
Not quite — April is the 6th coolest month in Oakville, averaging 5.5°C.
For April in Oakville, pack warm layers and a jacket for chilly mornings, with typical highs of 8.9°C and lows of 2°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 78% — quite humid.
Average wind speed in April is 3.9 m/s. The windiest April on record averaged 4.9 m/s (1982).
The wettest April on record was 2017 with 116 mm. On average, April sees 60 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 Oakville 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.
