August is one of the warmer months of the year in Sherbrooke, with average highs near 22.9°C and lows around 13°C (mean 18°C). It is a relatively wet time of year, averaging 119 mm of rainfall and 83% relative humidity across the period.
August is one of the warmer months of the year in Sherbrooke. Across 45 years of records, the warmest August in Sherbrooke was 2021 — when the month averaged 20.7°C — while the coldest was 1982 at 15.2°C. Typical August days reach 22.9°C with nights near 13°C. The long-term trend is warming, about 0.4°C per decade.
August is a relatively wet time of year in Sherbrooke, averaging 119 mm of rainfall. The wettest August on record was 2006 with 224 mm, while the driest was 2002 at 40 mm.
Relative humidity in Sherbrooke during August averages 83%. The most humid August was 2004 at 86%, and the least humid was 1987 at 79%.
August receives about 4.8 kWh/m²/day of solar energy in Sherbrooke. The sunniest August was 2002 at 5.5 kWh/m²/day, and the cloudiest were 1988, 2003 and 2023 at 4.3.
Average wind speed in Sherbrooke during August is 0.1 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest was 2021 at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.0°C | 17.7°C | 18.0°C | 18.5°C | 18.6°C | +1.6°C |
| Avg High | 22.1°C | 22.7°C | 22.9°C | 23.4°C | 23.5°C | +1.4°C |
| Avg Low | 11.9°C | 12.6°C | 13.2°C | 13.8°C | 13.7°C | +1.8°C |
| Avg Rain | 125 mm | 116 mm | 124 mm | 116 mm | 112 mm | -13 mm |
August temperatures in Sherbrooke have risen by about 1.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 2.9°C (1982) to a record high of 35.3°C (2018).
Rainfall in August is a relatively wet time of year, averaging 119 mm, with a wettest year of 224 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
One of the best times to visit Sherbrooke
August is one of the best times to visit Sherbrooke. Expect days averaging 22.9°C and nights around 13°C (mean 18°C) — warmer than Sherbrooke's yearly average — with higher rainfall (119 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 | 23.1°C | 17.7°C | 12.2°C | 29.1°C | 5.6°C | 63 mm | 80% | 0.1 m/s | 5.2 |
| 2024 | 23.2°C | 18.4°C | 13.6°C | 32.2°C | 7.8°C | 151 mm | 84% | 0.1 m/s | 4.5 |
| 2023 | 22.0°C | 17.4°C | 12.8°C | 26.2°C | 8.4°C | 143 mm | 86% | 0.1 m/s | 4.3 |
| 2022 | 24.2°C | 19.3°C | 14.3°C | 29.2°C | 9.0°C | 155 mm | 83% | 0.1 m/s | 4.5 |
| 2021 🔥 | 25.7°C | 20.7°C | 15.7°C | 34.5°C | 10.3°C | 70 mm | 83% | 0 m/s | 4.8 |
| 2020 | 22.6°C | 18.0°C | 13.5°C | 28.7°C | 6.8°C | 91 mm | 83% | 0.1 m/s | 4.8 |
| 2019 | 23.3°C | 18.2°C | 13.1°C | 28.8°C | 9.1°C | 112 mm | 83% | 0.1 m/s | 5.2 |
| 2018 | 25.2°C | 20.2°C | 15.2°C | 35.3°C | 8.3°C | 116 mm | 84% | 0.1 m/s | 4.9 |
| 2017 | 22.3°C | 17.5°C | 12.8°C | 26.9°C | 8.5°C | 102 mm | 82% | 0.1 m/s | 5 |
| 2016 | 24.3°C | 19.6°C | 14.9°C | 27.7°C | 10.0°C | 149 mm | 83% | 0.1 m/s | 4.9 |
| 2015 | 23.4°C | 18.8°C | 14.3°C | 29.0°C | 10.1°C | 78 mm | 86% | 0.1 m/s | 4.6 |
| 2014 | 22.6°C | 17.9°C | 13.3°C | 28.6°C | 9.1°C | 94 mm | 83% | 0.1 m/s | 4.8 |
| 2013 | 22.3°C | 17.5°C | 12.8°C | 26.2°C | 8.8°C | 100 mm | 84% | 0.1 m/s | 4.9 |
| 2012 | 24.3°C | 19.3°C | 14.3°C | 32.0°C | 8.7°C | 95 mm | 83% | 0.1 m/s | 5 |
| 2011 | 22.9°C | 18.3°C | 13.7°C | 27.2°C | 9.0°C | 202 mm | 85% | 0.1 m/s | 4.5 |
| 2010 | 23.2°C | 18.2°C | 13.2°C | 28.6°C | 7.3°C | 117 mm | 85% | 0.1 m/s | 5 |
| 2009 | 23.1°C | 18.4°C | 13.8°C | 28.7°C | 6.5°C | 82 mm | 84% | 0.1 m/s | 5 |
| 2008 | 22.0°C | 17.4°C | 12.8°C | 26.8°C | 8.1°C | 142 mm | 85% | 0.1 m/s | 4.6 |
| 2007 | 22.6°C | 17.3°C | 12.0°C | 28.4°C | 5.9°C | 125 mm | 82% | 0.1 m/s | 4.9 |
| 2006 🌧️ | 21.5°C | 16.7°C | 11.8°C | 28.7°C | 6.1°C | 224 mm | 83% | 0.1 m/s | 4.8 |
| 2005 | 23.7°C | 18.7°C | 13.8°C | 27.5°C | 7.3°C | 125 mm | 83% | 0.1 m/s | 5 |
| 2004 | 22.3°C | 17.6°C | 12.9°C | 26.5°C | 7.0°C | 158 mm | 86% | 0.1 m/s | 4.5 |
| 2003 | 23.7°C | 19.0°C | 14.4°C | 28.6°C | 6.8°C | 132 mm | 84% | 0.1 m/s | 4.3 |
| 2002 | 23.7°C | 18.7°C | 13.8°C | 29.9°C | 7.5°C | 40 mm | 81% | 0.1 m/s | 5.5 |
| 2001 | 24.6°C | 19.3°C | 14.0°C | 29.2°C | 7.7°C | 92 mm | 80% | 0.1 m/s | 5.2 |
| 2000 | 22.2°C | 17.3°C | 12.5°C | 26.5°C | 6.9°C | 118 mm | 85% | 0.1 m/s | 4.4 |
| 1999 | 22.0°C | 17.2°C | 12.5°C | 29.7°C | 7.2°C | 95 mm | 82% | 0.1 m/s | 5 |
| 1998 | 23.5°C | 18.5°C | 13.6°C | 29.9°C | 7.4°C | 118 mm | 81% | 0.1 m/s | 5.2 |
| 1997 | 21.8°C | 16.8°C | 11.8°C | 26.7°C | 7.3°C | 123 mm | 81% | 0.1 m/s | 4.8 |
| 1996 | 23.1°C | 17.8°C | 12.5°C | 27.7°C | 6.1°C | 64 mm | 82% | 0.1 m/s | 5.2 |
| 1995 | 23.4°C | 17.9°C | 12.3°C | 27.5°C | 6.2°C | 101 mm | 81% | 0.1 m/s | 5.1 |
| 1994 | 21.6°C | 16.6°C | 11.6°C | 26.5°C | 6.6°C | 92 mm | 83% | 0.1 m/s | 5 |
| 1993 | 23.8°C | 18.7°C | 13.6°C | 27.6°C | 7.8°C | 116 mm | 84% | 0.1 m/s | 5.3 |
| 1992 | 21.6°C | 16.7°C | 11.9°C | 27.2°C | 6.9°C | 117 mm | 85% | 0.1 m/s | 4.4 |
| 1991 | 23.2°C | 18.3°C | 13.4°C | 28.4°C | 7.9°C | 167 mm | 85% | 0.1 m/s | 4.7 |
| 1990 | 23.3°C | 18.1°C | 13.0°C | 26.9°C | 6.6°C | 164 mm | 83% | 0.1 m/s | 5.1 |
| 1989 | 21.7°C | 16.9°C | 12.0°C | 28.7°C | 3.7°C | 156 mm | 84% | 0.1 m/s | 4.7 |
| 1988 | 22.8°C | 18.1°C | 13.4°C | 29.2°C | 5.5°C | 192 mm | 85% | 0.1 m/s | 4.3 |
| 1987 | 21.7°C | 16.2°C | 10.7°C | 29.1°C | 4.2°C | 53 mm | 79% | 0.1 m/s | 4.8 |
| 1986 | 21.7°C | 16.4°C | 11.2°C | 30.1°C | 3.2°C | 145 mm | 84% | 0.1 m/s | 4.6 |
| 1985 | 21.3°C | 16.2°C | 11.0°C | 26.1°C | 5.4°C | 86 mm | 82% | 0.1 m/s | 4.7 |
| 1984 | 23.8°C | 19.0°C | 14.2°C | 31.4°C | 6.6°C | 91 mm | 84% | 0.1 m/s | 5.2 |
| 1983 | 23.0°C | 17.9°C | 12.8°C | 30.7°C | 6.1°C | 138 mm | 82% | 0.1 m/s | — |
| 1982 ❄️ | 20.3°C | 15.2°C | 10.1°C | 29.8°C | 2.9°C | 132 mm | 82% | 0.1 m/s | — |
| 1981 | 22.2°C | 17.1°C | 11.9°C | 25.8°C | 5.7°C | 131 mm | 83% | 0.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 22.9°C with lows near 13°C (mean 18°C), based on 45 years of NASA POWER data.
August averages 119 mm of rainfall in Sherbrooke, a relatively wet time of year. The wettest on record was 224 mm in 2006.
The hottest August reached 35.3°C in 2018. The coldest dipped to 2.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.6°C. Daytime highs moved from 22.1°C to 23.6°C and overnight lows from 12°C to 13.7°C over the same span.
August is one of the warmer months of the year in Sherbrooke and a relatively wet time of year, so plan for around 22.9°C daytime highs and 13°C at night.
Not quite — August is the 11th coolest month in Sherbrooke, averaging 18°C.
For August in Sherbrooke, pack light layers you can adjust through the day, with typical highs of 22.9°C and lows of 13°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 83% — quite humid.
Average wind speed in August is 0.1 m/s. The windiest August on record averaged 0.1 m/s (1981).
The wettest August on record was 2006 with 224 mm. On average, August sees 119 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 Sherbrooke 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.
