April is one of the cooler months of the year in Simcoe, with average highs near 12.2°C and lows around 1.2°C (mean 6.7°C). It is about average for rainfall, averaging 57 mm of rainfall and 76% relative humidity across the period.
April is one of the cooler months of the year in Simcoe. Across 45 years of records, the warmest April in Simcoe was 2010 — when the month averaged 9.6°C — while the coldest was 2018 at 3.3°C. Typical April days reach 12.2°C with nights near 1.2°C. The long-term April temperature trend is broadly flat.
April is about average for rainfall in Simcoe, averaging 57 mm of rainfall. The wettest April on record was 2000 with 110 mm, while the driest was 1997 at 19 mm.
Relative humidity in Simcoe during April averages 76%. The most humid April was 1984 at 84%, and the least humid was 2025 at 68%.
April receives about 4.6 kWh/m²/day of solar energy in Simcoe. The sunniest Aprils were 1998 and 2008 at 5.3 kWh/m²/day, and the cloudiest was 2011 at 3.5.
Average wind speed in Simcoe during April is 3.7 m/s. The windiest Aprils were 1981 and 1982 at 4.6 m/s, while the calmest was 2008 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.6°C | 6.7°C | 6.6°C | 6.4°C | 7.6°C | +1°C |
| Avg High | 12.1°C | 12.3°C | 12.0°C | 12.0°C | 13.3°C | +1.2°C |
| Avg Low | 1.1°C | 1.1°C | 1.3°C | 0.8°C | 1.9°C | +0.8°C |
| Avg Rain | 53 mm | 39 mm | 74 mm | 70 mm | 45 mm | -8 mm |
April temperatures in Simcoe have risen by about 1.7°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -15°C (2003) to a record high of 26.3°C (1987).
Rainfall in April is about average for rainfall, averaging 57 mm, with a wettest year of 110 mm.
A good time to visit Simcoe
April is a good time to visit Simcoe, with days averaging 12.2°C and nights around 1.2°C (mean 6.7°C, cooler than Simcoe'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 | 14.0°C | 7.8°C | 1.6°C | 26.1°C | -4.6°C | 41 mm | 68% | 3.9 m/s | 4.7 |
| 2024 | 14.5°C | 9.1°C | 3.6°C | 22.0°C | -2.7°C | 65 mm | 75% | 3.8 m/s | 4.5 |
| 2023 | 14.3°C | 8.4°C | 2.6°C | 26.3°C | -5.6°C | 56 mm | 73% | 3.5 m/s | 4.7 |
| 2022 | 12.0°C | 6.3°C | 0.5°C | 25.3°C | -4.5°C | 41 mm | 73% | 3.5 m/s | 4.6 |
| 2021 | 14.1°C | 8.3°C | 2.6°C | 24.1°C | -5.2°C | 35 mm | 68% | 3.4 m/s | 4.8 |
| 2020 | 10.6°C | 5.4°C | 0.3°C | 16.4°C | -3.6°C | 34 mm | 73% | 3.9 m/s | 4.8 |
| 2019 | 10.7°C | 6.0°C | 1.2°C | 19.3°C | -8.6°C | 70 mm | 82% | 3.7 m/s | 3.9 |
| 2018 ❄️ | 8.1°C | 3.3°C | -1.4°C | 19.9°C | -5.4°C | 81 mm | 77% | 3.8 m/s | 4.4 |
| 2017 | 14.8°C | 9.1°C | 3.4°C | 24.6°C | -3.2°C | 98 mm | 80% | 3.9 m/s | 4.4 |
| 2016 | 9.6°C | 4.4°C | -0.8°C | 21.6°C | -10.1°C | 54 mm | 76% | 3.6 m/s | 4.6 |
| 2015 | 13.0°C | 6.9°C | 0.7°C | 21.0°C | -3.6°C | 58 mm | 75% | 3.6 m/s | 4.5 |
| 2014 | 12.4°C | 6.0°C | -0.3°C | 21.1°C | -8.1°C | 74 mm | 76% | 3.7 m/s | 4.7 |
| 2013 | 11.0°C | 5.6°C | 0.2°C | 23.1°C | -5.0°C | 78 mm | 79% | 4.1 m/s | 4.4 |
| 2012 | 12.9°C | 6.8°C | 0.8°C | 22.7°C | -2.8°C | 39 mm | 71% | 3.7 m/s | 4.9 |
| 2011 | 11.6°C | 6.5°C | 1.4°C | 22.7°C | -3.2°C | 93 mm | 82% | 4.1 m/s | 3.5 |
| 2010 🔥 | 15.9°C | 9.6°C | 3.3°C | 23.8°C | -2.8°C | 50 mm | 71% | 3.5 m/s | 5 |
| 2009 | 12.3°C | 7.0°C | 1.7°C | 23.8°C | -3.8°C | 96 mm | 77% | 4.3 m/s | 4.9 |
| 2008 | 14.7°C | 8.4°C | 2.2°C | 23.0°C | -4.3°C | 50 mm | 77% | 3.1 m/s | 5.3 |
| 2007 | 10.2°C | 5.5°C | 0.8°C | 21.2°C | -6.0°C | 48 mm | 79% | 4 m/s | 4 |
| 2006 | 13.7°C | 7.9°C | 2.1°C | 22.2°C | -5.2°C | 53 mm | 76% | 3.4 m/s | 4.9 |
| 2005 | 11.8°C | 6.5°C | 1.3°C | 21.9°C | -2.1°C | 89 mm | 79% | 3.6 m/s | 4.6 |
| 2004 | 11.8°C | 6.7°C | 1.6°C | 20.6°C | -6.1°C | 72 mm | 81% | 3.8 m/s | 4.4 |
| 2003 | 10.4°C | 4.7°C | -0.9°C | 21.2°C | -15.0°C | 55 mm | 80% | 4.1 m/s | 4.9 |
| 2002 | 11.0°C | 6.3°C | 1.5°C | 22.7°C | -4.0°C | 106 mm | 83% | 3.4 m/s | 4.2 |
| 2001 | 13.1°C | 7.2°C | 1.3°C | 22.0°C | -3.8°C | 56 mm | 79% | 3.3 m/s | 4.8 |
| 2000 🌧️ | 11.1°C | 6.1°C | 1.1°C | 20.0°C | -7.9°C | 110 mm | 79% | 3.3 m/s | 4.3 |
| 1999 | 12.6°C | 7.1°C | 1.6°C | 19.6°C | -2.5°C | 67 mm | 75% | 3.8 m/s | 5 |
| 1998 | 14.1°C | 8.4°C | 2.6°C | 19.8°C | -3.2°C | 36 mm | 69% | 3.3 m/s | 5.3 |
| 1997 | 11.5°C | 5.6°C | -0.2°C | 20.5°C | -6.8°C | 19 mm | 71% | 3.5 m/s | 5 |
| 1996 | 10.0°C | 4.8°C | -0.5°C | 20.1°C | -4.6°C | 39 mm | 73% | 4.2 m/s | 4.4 |
| 1995 | 10.2°C | 4.7°C | -0.9°C | 19.6°C | -6.6°C | 34 mm | 70% | 4.1 m/s | 4 |
| 1994 | 13.3°C | 7.0°C | 0.7°C | 24.0°C | -5.0°C | 31 mm | 71% | 4.5 m/s | 4.9 |
| 1993 | 12.6°C | 7.0°C | 1.4°C | 21.5°C | -3.4°C | 26 mm | 74% | 3.6 m/s | 4 |
| 1992 | 11.5°C | 6.1°C | 0.6°C | 22.2°C | -5.8°C | 33 mm | 74% | 3.2 m/s | 3.7 |
| 1991 | 13.7°C | 8.5°C | 3.3°C | 22.2°C | -4.2°C | 73 mm | 79% | 4.2 m/s | 4 |
| 1990 | 13.0°C | 7.7°C | 2.4°C | 26.2°C | -4.9°C | 31 mm | 75% | 3.6 m/s | 4.7 |
| 1989 | 10.7°C | 5.0°C | -0.8°C | 19.2°C | -5.1°C | 26 mm | 71% | 3.2 m/s | 4.7 |
| 1988 | 12.6°C | 6.7°C | 0.9°C | 18.3°C | -4.2°C | 38 mm | 74% | 3.6 m/s | 4.7 |
| 1987 | 14.5°C | 8.9°C | 3.2°C | 26.3°C | -5.6°C | 26 mm | 76% | 3.7 m/s | 4.5 |
| 1986 | 13.1°C | 7.4°C | 1.8°C | 25.5°C | -4.3°C | 53 mm | 79% | 3.3 m/s | 4.7 |
| 1985 | 13.5°C | 8.1°C | 2.8°C | 25.4°C | -4.5°C | 88 mm | 83% | 3.7 m/s | 5.2 |
| 1984 | 11.3°C | 6.6°C | 1.9°C | 21.0°C | -3.2°C | 71 mm | 84% | 3.3 m/s | 4.3 |
| 1983 | 10.3°C | 5.5°C | 0.8°C | 19.9°C | -2.8°C | 70 mm | 82% | 3.9 m/s | — |
| 1982 | 9.6°C | 3.9°C | -1.9°C | 20.2°C | -12.7°C | 56 mm | 78% | 4.6 m/s | — |
| 1981 | 13.5°C | 7.3°C | 1.1°C | 20.9°C | -5.0°C | 52 mm | 71% | 4.6 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 12.2°C with lows near 1.2°C (mean 6.7°C), based on 45 years of NASA POWER data.
April averages 57 mm of rainfall in Simcoe, about average for rainfall. The wettest on record was 110 mm in 2000.
The hottest April reached 26.3°C in 1987. The coldest dipped to -15°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.7°C. Daytime highs moved from 11.6°C to 13.8°C and overnight lows from 0.9°C to 2.2°C over the same span.
April is one of the cooler months of the year in Simcoe and about average for rainfall, so plan for around 12.2°C daytime highs and 1.2°C at night.
Not quite — April is the 6th coolest month in Simcoe, averaging 6.7°C.
For April in Simcoe, pack warm layers and a jacket for chilly mornings, with typical highs of 12.2°C and lows of 1.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 76% — quite humid.
Average wind speed in April is 3.7 m/s. The windiest April on record averaged 4.6 m/s (1981).
The wettest April on record was 2000 with 110 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 Simcoe 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.
