August is one of the warmer months of the year in Rivière-du-Loup, with average highs near 20.9°C and lows around 12.5°C (mean 16.7°C). It is a relatively wet time of year, averaging 86 mm of rainfall and 80% relative humidity across the period.
August is one of the warmer months of the year in Rivière-du-Loup. Across 45 years of records, the warmest August in Rivière-du-Loup was 2021 — when the month averaged 19.4°C — while the coldest was 1982 at 13.3°C. Typical August days reach 20.9°C with nights near 12.5°C. The long-term trend is warming, about 0.4°C per decade.
August is a relatively wet time of year in Rivière-du-Loup, averaging 86 mm of rainfall. The wettest August on record was 2004 with 262 mm, while the driest was 2021 at 29 mm.
Relative humidity in Rivière-du-Loup during August averages 80%. The most humid August was 2011 at 87%, and the least humid was 1995 at 73%.
August receives about 4.8 kWh/m²/day of solar energy in Rivière-du-Loup. The sunniest Augusts were 1998, 2010 and 2025, among others at 5.3 kWh/m²/day, and the cloudiest were 1988 and 2023 at 4.1.
Average wind speed in Rivière-du-Loup during August is 1.3 m/s. The windiest August was 1994 at 1.5 m/s, while the calmest were 1985, 1997 and 2014 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.7°C | 16.6°C | 16.6°C | 17.4°C | 17.5°C | +1.8°C |
| Avg High | 19.9°C | 21.1°C | 20.7°C | 21.3°C | 21.8°C | +1.9°C |
| Avg Low | 11.4°C | 12.2°C | 12.6°C | 13.5°C | 13.2°C | +1.8°C |
| Avg Rain | 83 mm | 75 mm | 110 mm | 80 mm | 75 mm | -8 mm |
August temperatures in Rivière-du-Loup have risen by about 2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4°C (1982) to a record high of 30.2°C (2025).
Rainfall in August is a relatively wet time of year, averaging 86 mm, with a wettest year of 262 mm.
One of the best times to visit Rivière-du-Loup
August is one of the best times to visit Rivière-du-Loup. Expect days averaging 20.9°C and nights around 12.5°C (mean 16.7°C) — warmer than Rivière-du-Loup's yearly average — with higher rainfall (86 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 | 21.9°C | 17.1°C | 12.3°C | 30.2°C | 6.8°C | 54 mm | 74% | 1.2 m/s | 5.3 |
| 2024 | 22.1°C | 17.9°C | 13.6°C | 29.6°C | 8.8°C | 89 mm | 77% | 1.2 m/s | 4.5 |
| 2023 | 20.0°C | 16.2°C | 12.4°C | 23.2°C | 9.2°C | 117 mm | 83% | 1.2 m/s | 4.1 |
| 2022 | 21.9°C | 17.5°C | 13.1°C | 25.9°C | 8.5°C | 75 mm | 79% | 1.2 m/s | 4.7 |
| 2021 🔥 | 24.0°C | 19.4°C | 14.9°C | 28.6°C | 9.9°C | 29 mm | 76% | 1.3 m/s | 4.9 |
| 2020 | 21.1°C | 17.0°C | 13.0°C | 26.7°C | 6.6°C | 86 mm | 77% | 1.4 m/s | 5.1 |
| 2019 | 20.8°C | 16.8°C | 12.7°C | 25.0°C | 9.1°C | 74 mm | 80% | 1.2 m/s | 4.8 |
| 2018 | 22.5°C | 18.3°C | 14.1°C | 26.4°C | 8.0°C | 72 mm | 81% | 1.2 m/s | 4.9 |
| 2017 | 19.9°C | 16.0°C | 12.1°C | 24.5°C | 8.6°C | 82 mm | 80% | 1.3 m/s | 4.9 |
| 2016 | 21.9°C | 18.0°C | 14.1°C | 25.8°C | 9.3°C | 60 mm | 79% | 1.3 m/s | 5 |
| 2015 | 21.8°C | 18.1°C | 14.4°C | 27.3°C | 11.0°C | 101 mm | 84% | 1.2 m/s | 4.8 |
| 2014 | 21.9°C | 17.7°C | 13.6°C | 27.6°C | 8.8°C | 62 mm | 79% | 1.1 m/s | 5.1 |
| 2013 | 20.1°C | 16.1°C | 12.2°C | 25.3°C | 8.7°C | 84 mm | 84% | 1.2 m/s | 4.5 |
| 2012 | 22.0°C | 18.1°C | 14.2°C | 27.5°C | 10.4°C | 78 mm | 81% | 1.2 m/s | 4.7 |
| 2011 | 20.3°C | 17.0°C | 13.7°C | 25.4°C | 10.8°C | 156 mm | 87% | 1.3 m/s | 4.2 |
| 2010 | 21.7°C | 17.6°C | 13.5°C | 28.1°C | 10.1°C | 34 mm | 78% | 1.2 m/s | 5.3 |
| 2009 | 20.9°C | 17.0°C | 13.1°C | 26.4°C | 7.0°C | 73 mm | 82% | 1.3 m/s | 4.9 |
| 2008 | 20.2°C | 16.5°C | 12.8°C | 23.4°C | 10.2°C | 130 mm | 84% | 1.2 m/s | 4.4 |
| 2007 | 19.9°C | 15.7°C | 11.5°C | 27.1°C | 7.3°C | 140 mm | 82% | 1.2 m/s | 4.9 |
| 2006 | 19.5°C | 15.6°C | 11.7°C | 23.8°C | 7.2°C | 51 mm | 79% | 1.4 m/s | 5 |
| 2005 | 21.2°C | 17.1°C | 13.1°C | 25.2°C | 7.6°C | 120 mm | 82% | 1.2 m/s | 4.9 |
| 2004 🌧️ | 19.6°C | 15.9°C | 12.3°C | 23.1°C | 8.3°C | 262 mm | 86% | 1.3 m/s | 4.6 |
| 2003 | 20.7°C | 16.8°C | 12.9°C | 25.2°C | 6.8°C | 118 mm | 82% | 1.3 m/s | 4.3 |
| 2002 | 22.0°C | 17.6°C | 13.3°C | 28.8°C | 6.7°C | 36 mm | 77% | 1.3 m/s | 5.2 |
| 2001 | 22.2°C | 17.4°C | 12.7°C | 27.0°C | 8.0°C | 73 mm | 78% | 1.3 m/s | 5.1 |
| 2000 | 20.7°C | 16.8°C | 13.0°C | 24.0°C | 7.9°C | 101 mm | 81% | 1.2 m/s | 4.7 |
| 1999 | 20.7°C | 16.5°C | 12.2°C | 27.4°C | 9.1°C | 52 mm | 76% | 1.2 m/s | 4.9 |
| 1998 | 21.9°C | 17.4°C | 12.9°C | 28.3°C | 9.9°C | 72 mm | 74% | 1.3 m/s | 5.3 |
| 1997 | 20.6°C | 16.1°C | 11.7°C | 28.9°C | 8.0°C | 57 mm | 76% | 1.1 m/s | 4.6 |
| 1996 | 21.2°C | 16.6°C | 12.0°C | 27.9°C | 7.1°C | 35 mm | 77% | 1.2 m/s | 5.1 |
| 1995 | 22.1°C | 17.2°C | 12.3°C | 28.7°C | 7.4°C | 60 mm | 73% | 1.3 m/s | 5.3 |
| 1994 | 20.0°C | 15.5°C | 11.0°C | 24.7°C | 6.4°C | 61 mm | 77% | 1.5 m/s | 5.1 |
| 1993 | 21.7°C | 17.4°C | 13.1°C | 26.5°C | 8.0°C | 82 mm | 80% | 1.2 m/s | 5 |
| 1992 | 19.6°C | 15.4°C | 11.2°C | 25.3°C | 7.7°C | 95 mm | 83% | 1.4 m/s | 4.5 |
| 1991 | 20.9°C | 16.6°C | 12.3°C | 26.5°C | 7.6°C | 136 mm | 81% | 1.3 m/s | 4.6 |
| 1990 | 22.2°C | 17.6°C | 12.9°C | 29.2°C | 7.0°C | 97 mm | 77% | 1.2 m/s | 5 |
| 1989 | 20.9°C | 16.4°C | 12.0°C | 24.6°C | 5.8°C | 69 mm | 79% | 1.3 m/s | 4.7 |
| 1988 | 20.7°C | 16.7°C | 12.7°C | 27.4°C | 7.0°C | 84 mm | 80% | 1.3 m/s | 4.1 |
| 1987 | 19.8°C | 15.3°C | 10.7°C | 27.1°C | 5.7°C | 63 mm | 77% | 1.3 m/s | 4.8 |
| 1986 | 19.0°C | 14.8°C | 10.6°C | 23.7°C | 5.0°C | 136 mm | 83% | 1.4 m/s | 4.5 |
| 1985 | 20.3°C | 15.6°C | 11.0°C | 25.5°C | 7.1°C | 35 mm | 77% | 1.1 m/s | 5 |
| 1984 | 20.9°C | 16.9°C | 12.9°C | 24.8°C | 8.1°C | 53 mm | 83% | 1.2 m/s | 5 |
| 1983 | 20.3°C | 16.0°C | 11.6°C | 25.4°C | 7.2°C | 51 mm | 81% | 1.3 m/s | — |
| 1982 ❄️ | 17.5°C | 13.3°C | 9.2°C | 25.0°C | 4.0°C | 100 mm | 79% | 1.3 m/s | — |
| 1981 | 20.1°C | 16.0°C | 11.9°C | 24.9°C | 7.2°C | 157 mm | 82% | 1.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 20.9°C with lows near 12.5°C (mean 16.7°C), based on 45 years of NASA POWER data.
August averages 86 mm of rainfall in Rivière-du-Loup, a relatively wet time of year. The wettest on record was 262 mm in 2004.
The hottest August reached 30.2°C in 2025. The coldest dipped to 4°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°C. Daytime highs moved from 19.8°C to 22°C and overnight lows from 11.3°C to 13.3°C over the same span.
August is one of the warmer months of the year in Rivière-du-Loup and a relatively wet time of year, so plan for around 20.9°C daytime highs and 12.5°C at night.
Not quite — August is the 11th coolest month in Rivière-du-Loup, averaging 16.7°C.
For August in Rivière-du-Loup, pack light layers you can adjust through the day, with typical highs of 20.9°C and lows of 12.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 80% — quite humid.
Average wind speed in August is 1.3 m/s. The windiest August on record averaged 1.5 m/s (1994).
The wettest August on record was 2004 with 262 mm. On average, August sees 86 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 Rivière-du-Loup 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.
