August is one of the warmer months of the year in L’Assomption, with average highs near 24.5°C and lows around 14.3°C (mean 19.4°C). It is a relatively wet time of year, averaging 93 mm of rainfall and 78% relative humidity across the period.
August is one of the warmer months of the year in L’Assomption. Across 45 years of records, the warmest August in L’Assomption was 2021 — when the month averaged 23.5°C — while the coldest was 1982 at 16.4°C. Typical August days reach 24.5°C with nights near 14.3°C. The long-term trend is warming, about 0.5°C per decade.
August is a relatively wet time of year in L’Assomption, averaging 93 mm of rainfall. The wettest August on record was 2006 with 168 mm, while the driest was 2021 at 26 mm.
Relative humidity in L’Assomption during August averages 78%. The most humid August was 2000 at 82%, and the least humid was 2025 at 65%.
August receives about 5 kWh/m²/day of solar energy in L’Assomption. The sunniest August was 2002 at 5.6 kWh/m²/day, and the cloudiest was 1988 at 4.4.
Average wind speed in L’Assomption during August is 2 m/s. The windiest August was 1992 at 2.3 m/s, while the calmest was 2008 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.3°C | 19.4°C | 19.3°C | 19.8°C | 20.8°C | +2.5°C |
| Avg High | 23.5°C | 24.9°C | 24.2°C | 24.6°C | 26.1°C | +2.6°C |
| Avg Low | 13.2°C | 14.0°C | 14.4°C | 15.0°C | 15.4°C | +2.2°C |
| Avg Rain | 106 mm | 78 mm | 100 mm | 95 mm | 83 mm | -23 mm |
August temperatures in L’Assomption have risen by about 2.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 3.9°C (1982) to a record high of 35.2°C (2025).
Rainfall in August is a relatively wet time of year, averaging 93 mm, with a wettest year of 168 mm.
One of the best times to visit L’Assomption
August is one of the best times to visit L’Assomption. Expect days averaging 24.5°C and nights around 14.3°C (mean 19.4°C) — warmer than L’Assomption's yearly average — with higher rainfall (93 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 | 27.1°C | 21.0°C | 14.8°C | 35.2°C | 8.4°C | 63 mm | 65% | 1.9 m/s | 5.4 |
| 2024 | 25.6°C | 20.4°C | 15.3°C | 32.0°C | 9.1°C | 128 mm | 77% | 2 m/s | 4.5 |
| 2023 | 24.0°C | 19.0°C | 14.0°C | 26.9°C | 8.3°C | 90 mm | 79% | 2 m/s | 4.6 |
| 2022 | 26.5°C | 21.0°C | 15.5°C | 33.4°C | 10.6°C | 78 mm | 72% | 1.9 m/s | 4.9 |
| 2021 🔥 | 28.9°C | 23.5°C | 18.0°C | 33.9°C | 12.1°C | 26 mm | 69% | 2 m/s | 4.9 |
| 2020 | 24.6°C | 19.8°C | 15.0°C | 30.3°C | 8.7°C | 114 mm | 77% | 2 m/s | 5.1 |
| 2019 | 24.4°C | 19.4°C | 14.3°C | 28.3°C | 10.1°C | 87 mm | 79% | 1.9 m/s | 5.4 |
| 2018 | 26.4°C | 21.5°C | 16.5°C | 30.0°C | 9.5°C | 70 mm | 79% | 1.9 m/s | 4.9 |
| 2017 | 23.1°C | 18.5°C | 14.0°C | 26.7°C | 8.6°C | 76 mm | 80% | 2 m/s | 5.3 |
| 2016 | 25.8°C | 21.1°C | 16.4°C | 30.5°C | 11.1°C | 116 mm | 79% | 2.1 m/s | 5.1 |
| 2015 | 24.5°C | 19.9°C | 15.3°C | 29.3°C | 10.2°C | 87 mm | 81% | 1.9 m/s | 5 |
| 2014 | 23.7°C | 19.1°C | 14.5°C | 27.7°C | 9.3°C | 86 mm | 80% | 1.8 m/s | 5.1 |
| 2013 | 23.8°C | 18.8°C | 13.8°C | 28.3°C | 8.6°C | 92 mm | 80% | 2 m/s | 5.2 |
| 2012 | 25.6°C | 20.6°C | 15.6°C | 30.2°C | 9.2°C | 101 mm | 77% | 2.1 m/s | 5.1 |
| 2011 | 24.0°C | 19.5°C | 15.0°C | 27.8°C | 9.7°C | 150 mm | 82% | 2 m/s | 4.8 |
| 2010 | 24.5°C | 19.6°C | 14.6°C | 32.0°C | 8.8°C | 88 mm | 80% | 2 m/s | 5.1 |
| 2009 | 24.1°C | 19.6°C | 15.1°C | 29.5°C | 7.2°C | 68 mm | 82% | 2 m/s | 5 |
| 2008 | 23.2°C | 18.7°C | 14.1°C | 27.2°C | 8.5°C | 99 mm | 82% | 1.7 m/s | 5 |
| 2007 | 23.9°C | 18.6°C | 13.2°C | 30.4°C | 7.1°C | 93 mm | 78% | 1.9 m/s | 5.2 |
| 2006 🌧️ | 22.9°C | 18.0°C | 13.1°C | 30.7°C | 7.8°C | 168 mm | 80% | 2.1 m/s | 5.2 |
| 2005 | 25.0°C | 20.1°C | 15.2°C | 29.1°C | 9.0°C | 130 mm | 79% | 1.9 m/s | 5 |
| 2004 | 23.1°C | 18.3°C | 13.5°C | 27.2°C | 6.8°C | 99 mm | 82% | 2 m/s | 4.6 |
| 2003 | 24.9°C | 20.4°C | 15.8°C | 28.6°C | 7.5°C | 92 mm | 80% | 1.9 m/s | 4.6 |
| 2002 | 25.4°C | 20.1°C | 14.9°C | 31.1°C | 8.9°C | 40 mm | 78% | 2 m/s | 5.6 |
| 2001 | 26.3°C | 20.9°C | 15.4°C | 31.7°C | 9.4°C | 89 mm | 75% | 2 m/s | 5.3 |
| 2000 | 23.3°C | 18.4°C | 13.5°C | 26.9°C | 7.9°C | 121 mm | 82% | 2 m/s | 4.7 |
| 1999 | 24.4°C | 19.1°C | 13.7°C | 29.7°C | 8.6°C | 68 mm | 73% | 1.9 m/s | 5.1 |
| 1998 | 25.4°C | 20.2°C | 15.0°C | 31.2°C | 9.2°C | 86 mm | 74% | 1.9 m/s | 5.1 |
| 1997 | 24.2°C | 18.9°C | 13.5°C | 31.4°C | 9.7°C | 73 mm | 72% | 2 m/s | 5 |
| 1996 | 26.0°C | 19.9°C | 13.8°C | 30.8°C | 8.6°C | 47 mm | 72% | 1.9 m/s | 5.3 |
| 1995 | 26.5°C | 20.3°C | 14.0°C | 32.1°C | 8.6°C | 71 mm | 69% | 2.2 m/s | 5.3 |
| 1994 | 23.7°C | 18.2°C | 12.6°C | 28.5°C | 7.2°C | 70 mm | 76% | 2.2 m/s | 5 |
| 1993 | 26.1°C | 20.7°C | 15.4°C | 32.5°C | 9.4°C | 65 mm | 76% | 1.9 m/s | 5.2 |
| 1992 | 22.9°C | 17.8°C | 12.8°C | 28.6°C | 8.0°C | 79 mm | 81% | 2.3 m/s | 4.7 |
| 1991 | 25.0°C | 19.9°C | 14.7°C | 30.0°C | 8.7°C | 126 mm | 78% | 2.1 m/s | 4.9 |
| 1990 | 24.4°C | 19.4°C | 14.4°C | 28.2°C | 7.8°C | 97 mm | 80% | 1.8 m/s | 5.2 |
| 1989 | 23.5°C | 18.3°C | 13.1°C | 28.6°C | 5.2°C | 102 mm | 78% | 2 m/s | 5.1 |
| 1988 | 24.1°C | 19.4°C | 14.8°C | 31.2°C | 6.8°C | 154 mm | 81% | 2.1 m/s | 4.4 |
| 1987 | 23.5°C | 17.9°C | 12.2°C | 31.1°C | 6.0°C | 55 mm | 74% | 2 m/s | 5 |
| 1986 | 22.3°C | 17.3°C | 12.3°C | 26.7°C | 4.5°C | 134 mm | 81% | 2.1 m/s | 4.8 |
| 1985 | 23.2°C | 17.8°C | 12.4°C | 28.3°C | 7.1°C | 69 mm | 77% | 1.9 m/s | 4.7 |
| 1984 | 25.0°C | 20.1°C | 15.2°C | 28.9°C | 8.4°C | 114 mm | 81% | 1.9 m/s | 5.4 |
| 1983 | 24.5°C | 19.4°C | 14.3°C | 28.6°C | 7.4°C | 73 mm | 78% | 1.8 m/s | — |
| 1982 ❄️ | 21.7°C | 16.4°C | 11.0°C | 26.9°C | 3.9°C | 124 mm | 77% | 2.2 m/s | — |
| 1981 | 23.4°C | 18.4°C | 13.3°C | 27.5°C | 7.3°C | 128 mm | 80% | 1.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 24.5°C with lows near 14.3°C (mean 19.4°C), based on 45 years of NASA POWER data.
August averages 93 mm of rainfall in L’Assomption, a relatively wet time of year. The wettest on record was 168 mm in 2006.
The hottest August reached 35.2°C in 2025. The coldest dipped to 3.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.6°C. Daytime highs moved from 23.6°C to 26.4°C and overnight lows from 13.2°C to 15.5°C over the same span.
August is one of the warmer months of the year in L’Assomption and a relatively wet time of year, so plan for around 24.5°C daytime highs and 14.3°C at night.
Not quite — August is the 11th coolest month in L’Assomption, averaging 19.4°C.
For August in L’Assomption, pack light layers you can adjust through the day, with typical highs of 24.5°C and lows of 14.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 78% — quite humid.
Average wind speed in August is 2 m/s. The windiest August on record averaged 2.3 m/s (1992).
The wettest August on record was 2006 with 168 mm. On average, August sees 93 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 L’Assomption 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.
