August is one of the warmer months of the year in Mascouche, with average highs near 23.8°C and lows around 13.2°C (mean 18.5°C). It is about average for rainfall, averaging 90 mm of rainfall and 79% relative humidity across the period.
August is one of the warmer months of the year in Mascouche. Across 45 years of records, the warmest August in Mascouche was 2021 — when the month averaged 22.5°C — while the coldest was 1982 at 15.2°C. Typical August days reach 23.8°C with nights near 13.2°C. The long-term trend is warming, about 0.4°C per decade.
August is about average for rainfall in Mascouche, averaging 90 mm of rainfall. The wettest August on record was 2006 with 159 mm, while the driest was 1996 at 29 mm.
Relative humidity in Mascouche during August averages 79%. The most humid August was 2000 at 83%, and the least humid was 1995 at 64%.
August receives about 5 kWh/m²/day of solar energy in Mascouche. The sunniest August was 2002 at 5.6 kWh/m²/day, and the cloudiest was 1988 at 4.4.
Average wind speed in Mascouche during August is 0.9 m/s. The windiest Augusts were 1992, 1994 and 1995, among others at 1 m/s, while the calmest was 2008 at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.3°C | 18.7°C | 18.3°C | 18.7°C | 19.7°C | +2.4°C |
| Avg High | 22.5°C | 24.6°C | 23.5°C | 23.7°C | 25.1°C | +2.6°C |
| Avg Low | 12.0°C | 12.9°C | 13.2°C | 13.8°C | 14.2°C | +2.2°C |
| Avg Rain | 108 mm | 65 mm | 100 mm | 94 mm | 79 mm | -29 mm |
August temperatures in Mascouche have risen by about 2.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 2.5°C (1982) to a record high of 34.7°C (2025).
Rainfall in August is about average for rainfall, averaging 90 mm, with a wettest year of 159 mm.
One of the best times to visit Mascouche
August is one of the best times to visit Mascouche. Expect days averaging 23.8°C and nights around 13.2°C (mean 18.5°C) — warmer than Mascouche's yearly average — with higher rainfall (90 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 | 26.1°C | 19.8°C | 13.4°C | 34.7°C | 7.1°C | 58 mm | 67% | 0.9 m/s | 5.4 |
| 2024 | 24.6°C | 19.3°C | 14.1°C | 30.8°C | 8.4°C | 118 mm | 80% | 0.8 m/s | 4.5 |
| 2023 | 22.9°C | 17.9°C | 12.9°C | 26.5°C | 7.1°C | 90 mm | 81% | 0.9 m/s | 4.6 |
| 2022 | 25.1°C | 19.6°C | 14.2°C | 31.7°C | 9.5°C | 76 mm | 77% | 0.8 m/s | 4.9 |
| 2021 🔥 | 28.2°C | 22.5°C | 16.9°C | 33.1°C | 10.6°C | 30 mm | 71% | 0.9 m/s | 4.9 |
| 2020 | 23.8°C | 18.8°C | 13.7°C | 29.2°C | 7.4°C | 104 mm | 79% | 0.9 m/s | 5.1 |
| 2019 | 23.4°C | 18.2°C | 13.0°C | 26.9°C | 9.4°C | 71 mm | 81% | 0.8 m/s | 5.4 |
| 2018 | 25.4°C | 20.3°C | 15.2°C | 28.8°C | 8.2°C | 66 mm | 81% | 0.8 m/s | 4.9 |
| 2017 | 22.2°C | 17.5°C | 12.8°C | 25.6°C | 7.1°C | 84 mm | 82% | 0.9 m/s | 5.3 |
| 2016 | 24.9°C | 20.0°C | 15.1°C | 29.6°C | 10.4°C | 132 mm | 81% | 0.9 m/s | 5.1 |
| 2015 | 23.7°C | 18.9°C | 14.1°C | 28.9°C | 9.2°C | 89 mm | 83% | 0.8 m/s | 5 |
| 2014 | 22.8°C | 18.0°C | 13.3°C | 28.1°C | 8.5°C | 80 mm | 82% | 0.8 m/s | 5.1 |
| 2013 | 22.9°C | 17.7°C | 12.6°C | 27.7°C | 7.1°C | 100 mm | 82% | 0.9 m/s | 5.2 |
| 2012 | 24.7°C | 19.4°C | 14.1°C | 29.3°C | 8.1°C | 91 mm | 79% | 0.9 m/s | 5.1 |
| 2011 | 23.3°C | 18.6°C | 13.8°C | 28.4°C | 8.5°C | 134 mm | 83% | 0.9 m/s | 4.8 |
| 2010 | 23.5°C | 18.5°C | 13.5°C | 31.2°C | 7.5°C | 94 mm | 82% | 0.9 m/s | 5.1 |
| 2009 | 23.3°C | 18.6°C | 13.9°C | 29.1°C | 5.9°C | 71 mm | 83% | 0.9 m/s | 5 |
| 2008 | 22.7°C | 17.8°C | 12.8°C | 26.8°C | 7.3°C | 91 mm | 83% | 0.7 m/s | 5 |
| 2007 | 23.3°C | 17.6°C | 12.0°C | 29.9°C | 6.3°C | 100 mm | 79% | 0.9 m/s | 5.2 |
| 2006 🌧️ | 22.2°C | 17.2°C | 12.1°C | 30.4°C | 6.7°C | 159 mm | 80% | 0.9 m/s | 5.2 |
| 2005 | 24.3°C | 19.2°C | 14.2°C | 28.7°C | 7.4°C | 126 mm | 80% | 0.8 m/s | 5 |
| 2004 | 22.1°C | 17.2°C | 12.3°C | 26.5°C | 5.2°C | 96 mm | 83% | 0.8 m/s | 4.6 |
| 2003 | 24.1°C | 19.4°C | 14.6°C | 28.0°C | 7.1°C | 114 mm | 82% | 0.8 m/s | 4.6 |
| 2002 | 24.7°C | 19.2°C | 13.7°C | 30.8°C | 8.2°C | 42 mm | 79% | 0.9 m/s | 5.6 |
| 2001 | 25.4°C | 19.8°C | 14.1°C | 31.0°C | 7.7°C | 86 mm | 76% | 0.9 m/s | 5.3 |
| 2000 | 22.4°C | 17.4°C | 12.4°C | 26.5°C | 6.7°C | 119 mm | 83% | 0.9 m/s | 4.7 |
| 1999 | 23.8°C | 18.1°C | 12.5°C | 29.7°C | 7.9°C | 60 mm | 73% | 0.9 m/s | 5.1 |
| 1998 | 24.7°C | 19.2°C | 13.7°C | 30.3°C | 8.0°C | 74 mm | 76% | 0.8 m/s | 5.1 |
| 1997 | 23.9°C | 18.2°C | 12.4°C | 31.6°C | 8.9°C | 68 mm | 71% | 0.9 m/s | 5 |
| 1996 | 26.2°C | 19.5°C | 12.8°C | 30.9°C | 7.8°C | 29 mm | 69% | 0.9 m/s | 5.3 |
| 1995 | 27.2°C | 20.2°C | 13.2°C | 32.8°C | 7.9°C | 52 mm | 64% | 1 m/s | 5.3 |
| 1994 | 23.6°C | 17.5°C | 11.5°C | 28.4°C | 6.3°C | 52 mm | 74% | 1 m/s | 5 |
| 1993 | 26.3°C | 20.3°C | 14.3°C | 33.6°C | 8.4°C | 47 mm | 73% | 0.9 m/s | 5.2 |
| 1992 | 22.0°C | 16.9°C | 11.7°C | 28.1°C | 6.6°C | 63 mm | 82% | 1 m/s | 4.7 |
| 1991 | 24.2°C | 19.0°C | 13.8°C | 29.5°C | 7.1°C | 123 mm | 79% | 0.9 m/s | 4.9 |
| 1990 | 23.8°C | 18.6°C | 13.3°C | 27.1°C | 6.9°C | 81 mm | 81% | 0.8 m/s | 5.2 |
| 1989 | 22.5°C | 17.2°C | 11.9°C | 28.2°C | 4.4°C | 96 mm | 80% | 0.9 m/s | 5.1 |
| 1988 | 23.0°C | 18.4°C | 13.7°C | 30.5°C | 6.0°C | 158 mm | 83% | 0.9 m/s | 4.4 |
| 1987 | 22.4°C | 16.7°C | 11.0°C | 29.9°C | 5.1°C | 57 mm | 76% | 0.9 m/s | 5 |
| 1986 | 21.4°C | 16.3°C | 11.1°C | 26.5°C | 3.3°C | 141 mm | 82% | 0.9 m/s | 4.8 |
| 1985 | 22.1°C | 16.6°C | 11.2°C | 27.4°C | 6.2°C | 74 mm | 79% | 0.8 m/s | 4.7 |
| 1984 | 24.0°C | 19.0°C | 13.9°C | 28.3°C | 6.5°C | 134 mm | 83% | 0.8 m/s | 5.4 |
| 1983 | 23.9°C | 18.5°C | 13.1°C | 28.5°C | 6.1°C | 70 mm | 79% | 0.8 m/s | — |
| 1982 ❄️ | 20.6°C | 15.2°C | 9.9°C | 25.9°C | 2.5°C | 118 mm | 79% | 1 m/s | — |
| 1981 | 22.8°C | 17.5°C | 12.3°C | 27.3°C | 5.8°C | 124 mm | 81% | 0.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 23.8°C with lows near 13.2°C (mean 18.5°C), based on 45 years of NASA POWER data.
August averages 90 mm of rainfall in Mascouche, about average for rainfall. The wettest on record was 159 mm in 2006.
The hottest August reached 34.7°C in 2025. The coldest dipped to 2.5°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.4°C. Daytime highs moved from 22.7°C to 25.4°C and overnight lows from 12.1°C to 14.3°C over the same span.
August is one of the warmer months of the year in Mascouche and about average for rainfall, so plan for around 23.8°C daytime highs and 13.2°C at night.
Not quite — August is the 11th coolest month in Mascouche, averaging 18.5°C.
For August in Mascouche, pack light layers you can adjust through the day, with typical highs of 23.8°C and lows of 13.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 79% — quite humid.
Average wind speed in August is 0.9 m/s. The windiest August on record averaged 1 m/s (1982).
The wettest August on record was 2006 with 159 mm. On average, August sees 90 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 Mascouche behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
