August is one of the warmer months of the year in Baie-Comeau, with average highs near 18.6°C and lows around 12.8°C (mean 15.7°C). It is about average for rainfall, averaging 85 mm of rainfall and 84% relative humidity across the period.
August is one of the warmer months of the year in Baie-Comeau. Across 45 years of records, the warmest August in Baie-Comeau was 2021 — when the month averaged 17.7°C — while the coldest was 1982 at 13°C. Typical August days reach 18.6°C with nights near 12.8°C. The long-term trend is warming, about 0.4°C per decade.
August is about average for rainfall in Baie-Comeau, averaging 85 mm of rainfall. The wettest August on record was 2005 with 165 mm, while the driest was 1996 at 25 mm.
Relative humidity in Baie-Comeau during August averages 84%. The most humid August was 2011 at 88%, and the least humid was 2025 at 80%.
August receives about 4.5 kWh/m²/day of solar energy in Baie-Comeau. The sunniest August was 1998 at 5.1 kWh/m²/day, and the cloudiest was 2023 at 3.8.
Average wind speed in Baie-Comeau during August is 1.7 m/s. The windiest Augusts were 1986, 1994 and 2020 at 2 m/s, while the calmest were 1985 and 2014 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.8°C | 15.4°C | 15.7°C | 16.3°C | 16.6°C | +1.8°C |
| Avg High | 17.9°C | 18.6°C | 18.5°C | 19.0°C | 19.5°C | +1.6°C |
| Avg Low | 11.7°C | 12.3°C | 12.8°C | 13.6°C | 13.6°C | +1.9°C |
| Avg Rain | 88 mm | 71 mm | 102 mm | 79 mm | 82 mm | -6 mm |
August temperatures in Baie-Comeau have risen by about 1.7°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5.4°C (1986) to a record high of 26.2°C (2025).
Rainfall in August is about average for rainfall, averaging 85 mm, with a wettest year of 165 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 Baie-Comeau
August is one of the best times to visit Baie-Comeau. Expect days averaging 18.6°C and nights around 12.8°C (mean 15.7°C) — warmer than Baie-Comeau's yearly average — with higher rainfall (85 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 | 19.7°C | 16.4°C | 13.1°C | 26.2°C | 8.9°C | 52 mm | 80% | 1.6 m/s | 4.7 |
| 2024 | 19.8°C | 16.7°C | 13.6°C | 25.3°C | 9.7°C | 84 mm | 84% | 1.5 m/s | 4.3 |
| 2023 | 18.1°C | 15.6°C | 13.0°C | 21.5°C | 10.5°C | 131 mm | 86% | 1.8 m/s | 3.8 |
| 2022 | 19.8°C | 16.9°C | 13.9°C | 24.3°C | 10.2°C | 80 mm | 85% | 1.6 m/s | 4.8 |
| 2021 🔥 | 20.9°C | 17.7°C | 14.5°C | 26.0°C | 10.5°C | 56 mm | 85% | 1.6 m/s | 4.6 |
| 2020 | 18.8°C | 16.0°C | 13.2°C | 23.8°C | 8.0°C | 87 mm | 83% | 2 m/s | 4.8 |
| 2019 | 18.6°C | 15.8°C | 13.0°C | 22.9°C | 10.3°C | 84 mm | 85% | 1.6 m/s | 4.4 |
| 2018 | 19.7°C | 17.0°C | 14.2°C | 22.4°C | 10.0°C | 74 mm | 86% | 1.6 m/s | 4.5 |
| 2017 | 17.5°C | 14.8°C | 12.0°C | 21.9°C | 8.9°C | 83 mm | 85% | 1.9 m/s | 4.2 |
| 2016 | 19.2°C | 16.4°C | 13.7°C | 23.4°C | 10.4°C | 55 mm | 84% | 1.6 m/s | 4.6 |
| 2015 | 19.7°C | 17.1°C | 14.5°C | 23.9°C | 12.1°C | 125 mm | 88% | 1.6 m/s | 4.1 |
| 2014 | 20.4°C | 17.6°C | 14.7°C | 25.8°C | 10.0°C | 77 mm | 83% | 1.4 m/s | 4.6 |
| 2013 | 17.6°C | 14.9°C | 12.2°C | 22.0°C | 9.0°C | 54 mm | 87% | 1.7 m/s | 4.3 |
| 2012 | 19.6°C | 16.9°C | 14.3°C | 24.1°C | 10.5°C | 61 mm | 86% | 1.7 m/s | 4.2 |
| 2011 | 18.4°C | 16.0°C | 13.6°C | 22.3°C | 10.4°C | 136 mm | 88% | 1.7 m/s | 3.9 |
| 2010 | 19.4°C | 16.3°C | 13.3°C | 24.6°C | 10.6°C | 38 mm | 83% | 1.6 m/s | 4.6 |
| 2009 | 18.7°C | 15.9°C | 13.1°C | 23.8°C | 7.7°C | 73 mm | 84% | 1.8 m/s | 4.4 |
| 2008 | 18.3°C | 15.8°C | 13.3°C | 21.0°C | 11.3°C | 121 mm | 87% | 1.9 m/s | 4.2 |
| 2007 | 17.5°C | 14.6°C | 11.6°C | 21.1°C | 8.6°C | 126 mm | 84% | 1.6 m/s | 4.4 |
| 2006 | 17.6°C | 14.7°C | 11.9°C | 21.9°C | 8.3°C | 40 mm | 83% | 1.9 m/s | 4.6 |
| 2005 🌧️ | 18.6°C | 15.8°C | 12.9°C | 22.3°C | 8.8°C | 165 mm | 86% | 1.7 m/s | 4.4 |
| 2004 | 18.2°C | 15.4°C | 12.6°C | 21.1°C | 8.5°C | 139 mm | 87% | 1.8 m/s | 4.1 |
| 2003 | 18.4°C | 15.6°C | 12.8°C | 22.9°C | 7.1°C | 82 mm | 83% | 1.9 m/s | 4.1 |
| 2002 | 19.3°C | 16.4°C | 13.4°C | 24.5°C | 7.1°C | 68 mm | 83% | 1.8 m/s | 4.9 |
| 2001 | 19.3°C | 16.3°C | 13.2°C | 23.0°C | 8.6°C | 77 mm | 84% | 1.8 m/s | 4.4 |
| 2000 | 19.2°C | 16.4°C | 13.6°C | 23.0°C | 9.8°C | 132 mm | 85% | 1.7 m/s | 4.5 |
| 1999 | 18.9°C | 15.9°C | 12.9°C | 24.7°C | 10.3°C | 63 mm | 81% | 1.7 m/s | 5 |
| 1998 | 18.9°C | 15.7°C | 12.4°C | 24.6°C | 9.2°C | 59 mm | 81% | 1.7 m/s | 5.1 |
| 1997 | 17.2°C | 14.4°C | 11.5°C | 23.5°C | 8.7°C | 71 mm | 84% | 1.5 m/s | 4.2 |
| 1996 | 19.1°C | 15.8°C | 12.6°C | 24.8°C | 8.8°C | 25 mm | 82% | 1.6 m/s | 5 |
| 1995 | 19.3°C | 15.9°C | 12.6°C | 24.4°C | 8.1°C | 41 mm | 81% | 1.7 m/s | 5 |
| 1994 | 17.2°C | 14.0°C | 10.9°C | 21.5°C | 6.8°C | 76 mm | 83% | 2 m/s | 4.8 |
| 1993 | 19.2°C | 16.2°C | 13.3°C | 23.5°C | 8.6°C | 98 mm | 85% | 1.6 m/s | 4.5 |
| 1992 | 17.2°C | 14.2°C | 11.3°C | 20.6°C | 8.7°C | 105 mm | 86% | 1.9 m/s | 4.2 |
| 1991 | 19.0°C | 15.8°C | 12.6°C | 23.4°C | 9.0°C | 95 mm | 84% | 1.8 m/s | 4.7 |
| 1990 | 19.5°C | 16.4°C | 13.3°C | 25.5°C | 8.0°C | 78 mm | 84% | 1.7 m/s | 4.8 |
| 1989 | 17.9°C | 15.0°C | 12.0°C | 22.0°C | 6.8°C | 70 mm | 85% | 1.8 m/s | 4.4 |
| 1988 | 18.3°C | 15.3°C | 12.4°C | 24.2°C | 7.5°C | 130 mm | 85% | 1.8 m/s | 4.1 |
| 1987 | 17.5°C | 14.2°C | 10.9°C | 24.5°C | 6.5°C | 70 mm | 82% | 1.8 m/s | 4.4 |
| 1986 | 16.9°C | 13.9°C | 10.9°C | 20.6°C | 5.4°C | 118 mm | 85% | 2 m/s | 4.4 |
| 1985 | 18.4°C | 15.1°C | 11.9°C | 22.7°C | 8.5°C | 47 mm | 82% | 1.4 m/s | 4.8 |
| 1984 | 19.1°C | 16.1°C | 13.0°C | 22.7°C | 9.5°C | 53 mm | 85% | 1.6 m/s | 4.9 |
| 1983 | 18.5°C | 15.2°C | 12.0°C | 22.9°C | 8.2°C | 67 mm | 84% | 1.7 m/s | — |
| 1982 ❄️ | 16.0°C | 13.0°C | 10.0°C | 22.1°C | 5.7°C | 105 mm | 83% | 1.9 m/s | — |
| 1981 | 18.6°C | 15.6°C | 12.6°C | 22.5°C | 7.6°C | 130 mm | 84% | 1.9 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 18.6°C with lows near 12.8°C (mean 15.7°C), based on 45 years of NASA POWER data.
August averages 85 mm of rainfall in Baie-Comeau, about average for rainfall. The wettest on record was 165 mm in 2005.
The hottest August reached 26.2°C in 2025. The coldest dipped to 5.4°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.7°C. Daytime highs moved from 18.1°C to 19.7°C and overnight lows from 11.9°C to 13.6°C over the same span.
August is one of the warmer months of the year in Baie-Comeau and about average for rainfall, so plan for around 18.6°C daytime highs and 12.8°C at night.
Not quite — August is the 11th coolest month in Baie-Comeau, averaging 15.7°C.
For August in Baie-Comeau, pack light layers you can adjust through the day, with typical highs of 18.6°C and lows of 12.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 84% — quite humid.
Average wind speed in August is 1.7 m/s. The windiest August on record averaged 2 m/s (1986).
The wettest August on record was 2005 with 165 mm. On average, August sees 85 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 Baie-Comeau 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.
