December is one of the cooler months of the year in Baie-Comeau, with average highs near -5.2°C and lows around -11.1°C (mean -8.1°C). It is about average for rainfall, averaging 96 mm of rainfall and 94% relative humidity across the period.
December is one of the cooler months of the year in Baie-Comeau. Across 45 years of records, the warmest December in Baie-Comeau was 2010 — when the month averaged -2.5°C — while the coldest was 1989 at -14.8°C. Typical December days reach -5.2°C with nights near -11.1°C. The long-term trend is warming, about 0.9°C per decade.
December is about average for rainfall in Baie-Comeau, averaging 96 mm of rainfall. The wettest December on record was 2003 with 164 mm, while the driest was 1997 at 35 mm.
Relative humidity in Baie-Comeau during December averages 94%. The most humid December was 1985 at 97%, and the least humid was 2001 at 87%.
December receives about 0.8 kWh/m²/day of solar energy in Baie-Comeau. The sunniest Decembers were 1995, 2019 and 2023 at 1 kWh/m²/day, and the cloudiest were 1999, 2010 and 2015, among others at 0.7.
Average wind speed in Baie-Comeau during December is 3.2 m/s. The windiest Decembers were 2005 and 2025 at 4 m/s, while the calmest was 1987 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -10.4°C | -8.5°C | -7.7°C | -7.3°C | -5.9°C | +4.5°C |
| Avg High | -7.2°C | -5.4°C | -4.9°C | -4.6°C | -3.2°C | +4°C |
| Avg Low | -13.5°C | -11.6°C | -10.6°C | -10.0°C | -8.7°C | +4.8°C |
| Avg Rain | 82 mm | 74 mm | 98 mm | 113 mm | 127 mm | +45 mm |
December temperatures in Baie-Comeau have risen by about 3.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -32.3°C (1993) to a record high of 10°C (2023).
Rainfall in December is about average for rainfall, averaging 96 mm, with a wettest year of 164 mm.
A quieter season to visit Baie-Comeau
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Baie-Comeau. That said, December — with days averaging -5.2°C and nights around -11.1°C (mean -8.1°C) and higher rainfall (96 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | -5.8°C | -8.7°C | -11.7°C | 3.3°C | -17.9°C | 149 mm | 94% | 4 m/s | — |
| 2024 | -3.3°C | -5.6°C | -7.9°C | 3.3°C | -16.3°C | 135 mm | 91% | 3.5 m/s | 0.9 |
| 2023 | -1.5°C | -4.1°C | -6.8°C | 10.0°C | -13.6°C | 80 mm | 87% | 3.3 m/s | 1 |
| 2022 | -2.7°C | -5.1°C | -7.6°C | 1.7°C | -16.2°C | 129 mm | 94% | 3.4 m/s | 0.8 |
| 2021 | -4.0°C | -7.4°C | -10.8°C | 2.2°C | -18.7°C | 127 mm | 94% | 3.4 m/s | 0.9 |
| 2020 | -2.0°C | -4.8°C | -7.6°C | 8.4°C | -20.0°C | 143 mm | 91% | 3.1 m/s | 0.8 |
| 2019 | -5.3°C | -8.7°C | -12.1°C | 2.8°C | -17.4°C | 97 mm | 95% | 3.2 m/s | 1 |
| 2018 | -6.8°C | -9.9°C | -13.0°C | 2.1°C | -21.0°C | 102 mm | 96% | 2.8 m/s | 0.9 |
| 2017 | -8.3°C | -11.1°C | -13.8°C | 1.1°C | -21.3°C | 116 mm | 96% | 3.5 m/s | 0.8 |
| 2016 | -5.3°C | -8.4°C | -11.5°C | 0.5°C | -21.1°C | 103 mm | 96% | 3.2 m/s | 0.9 |
| 2015 | -1.8°C | -3.9°C | -6.0°C | 2.2°C | -16.3°C | 106 mm | 92% | 3.2 m/s | 0.7 |
| 2014 | -3.4°C | -6.0°C | -8.7°C | 1.8°C | -20.1°C | 149 mm | 92% | 3.4 m/s | 0.8 |
| 2013 | -8.7°C | -11.5°C | -14.2°C | 1.0°C | -24.5°C | 110 mm | 96% | 3.5 m/s | 0.8 |
| 2012 | -3.0°C | -5.5°C | -8.1°C | 2.5°C | -16.2°C | 141 mm | 94% | 3.5 m/s | 0.8 |
| 2011 | -3.0°C | -5.8°C | -8.5°C | 3.0°C | -19.4°C | 66 mm | 89% | 3.6 m/s | 0.8 |
| 2010 🔥 | -0.6°C | -2.5°C | -4.4°C | 9.9°C | -11.2°C | 142 mm | 89% | 3.6 m/s | 0.7 |
| 2009 | -3.4°C | -5.7°C | -8.0°C | 1.8°C | -15.4°C | 89 mm | 92% | 3.7 m/s | 0.8 |
| 2008 | -4.8°C | -8.0°C | -11.2°C | 2.2°C | -20.4°C | 125 mm | 94% | 3.9 m/s | 0.8 |
| 2007 | -5.7°C | -8.7°C | -11.8°C | 1.5°C | -17.2°C | 78 mm | 95% | 3.9 m/s | 0.9 |
| 2006 | -4.2°C | -7.1°C | -10.1°C | 1.3°C | -18.9°C | 65 mm | 92% | 2.8 m/s | 0.9 |
| 2005 | -4.5°C | -7.0°C | -9.5°C | 3.7°C | -17.6°C | 97 mm | 92% | 4 m/s | 0.9 |
| 2004 | -6.9°C | -10.7°C | -14.5°C | 1.6°C | -22.5°C | 123 mm | 97% | 3.3 m/s | 0.9 |
| 2003 🌧️ | -4.4°C | -7.5°C | -10.5°C | 2.7°C | -19.0°C | 164 mm | 94% | 3.1 m/s | 0.9 |
| 2002 | -5.4°C | -8.3°C | -11.2°C | 0.6°C | -22.8°C | 67 mm | 96% | 3 m/s | 0.9 |
| 2001 | -2.6°C | -4.9°C | -7.3°C | 3.8°C | -12.3°C | 53 mm | 87% | 2.9 m/s | 0.9 |
| 2000 | -6.9°C | -9.6°C | -12.4°C | 4.4°C | -23.0°C | 114 mm | 95% | 3.5 m/s | 0.9 |
| 1999 | -4.8°C | -7.4°C | -10.0°C | 2.4°C | -22.4°C | 87 mm | 94% | 3 m/s | 0.7 |
| 1998 | -4.6°C | -8.5°C | -12.5°C | 1.2°C | -23.6°C | 74 mm | 94% | 3.2 m/s | 0.9 |
| 1997 | -5.2°C | -8.0°C | -10.9°C | 2.0°C | -23.0°C | 35 mm | 90% | 2.8 m/s | 0.9 |
| 1996 | -2.7°C | -5.3°C | -8.0°C | 4.4°C | -25.2°C | 134 mm | 94% | 3 m/s | 0.8 |
| 1995 | -6.5°C | -9.2°C | -12.0°C | 1.3°C | -19.7°C | 55 mm | 93% | 3 m/s | 1 |
| 1994 | -5.1°C | -8.0°C | -10.8°C | 1.4°C | -20.2°C | 61 mm | 95% | 2.8 m/s | 0.8 |
| 1993 | -5.9°C | -9.0°C | -12.2°C | 2.0°C | -32.3°C | 90 mm | 94% | 2.8 m/s | 0.8 |
| 1992 | -5.5°C | -8.7°C | -12.0°C | 1.6°C | -24.0°C | 41 mm | 95% | 2.8 m/s | 0.8 |
| 1991 | -7.8°C | -11.6°C | -15.3°C | 4.5°C | -25.4°C | 63 mm | 94% | 3 m/s | 0.9 |
| 1990 | -5.5°C | -9.2°C | -12.8°C | 0.6°C | -25.7°C | 96 mm | 96% | 3.4 m/s | 0.8 |
| 1989 ❄️ | -11.7°C | -14.8°C | -17.8°C | -2.5°C | -27.8°C | 43 mm | 97% | 3.4 m/s | 0.9 |
| 1988 | -7.5°C | -10.6°C | -13.7°C | 0.7°C | -24.9°C | 83 mm | 95% | 3 m/s | 0.8 |
| 1987 | -7.0°C | -9.9°C | -12.8°C | 1.7°C | -24.4°C | 58 mm | 94% | 2.5 m/s | 0.9 |
| 1986 | -6.2°C | -9.7°C | -13.2°C | 0.5°C | -24.3°C | 73 mm | 96% | 3.2 m/s | 0.7 |
| 1985 | -9.5°C | -12.7°C | -15.9°C | 1.2°C | -25.1°C | 62 mm | 97% | 2.9 m/s | 0.8 |
| 1984 | -6.1°C | -9.9°C | -13.6°C | 1.9°C | -26.8°C | 69 mm | 94% | 3 m/s | 0.7 |
| 1983 | -7.5°C | -10.9°C | -14.3°C | 1.1°C | -24.7°C | 155 mm | 97% | 3.7 m/s | — |
| 1982 | -5.6°C | -8.9°C | -12.3°C | 3.7°C | -22.7°C | 96 mm | 93% | 3 m/s | — |
| 1981 | -3.6°C | -6.0°C | -8.3°C | 1.9°C | -17.4°C | 97 mm | 94% | 2.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -5.2°C with lows near -11.1°C (mean -8.1°C), based on 45 years of NASA POWER data.
December averages 96 mm of rainfall in Baie-Comeau, about average for rainfall. The wettest on record was 164 mm in 2003.
The hottest December reached 10°C in 2023. The coldest dipped to -32.3°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3.5°C. Daytime highs moved from -6.5°C to -3.5°C and overnight lows from -12.9°C to -9°C over the same span.
December is one of the cooler months of the year in Baie-Comeau and about average for rainfall, so plan for around -5.2°C daytime highs and -11.1°C at night.
Not quite — December is the 3rd coolest month in Baie-Comeau, averaging -8.1°C.
For December in Baie-Comeau, pack warm layers and a jacket for chilly mornings, with typical highs of -5.2°C and lows of -11.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 94% — quite humid.
Average wind speed in December is 3.2 m/s. The windiest December on record averaged 4 m/s (2005).
The wettest December on record was 2003 with 164 mm. On average, December sees 96 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 December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
