May is one of the warmer months of the year in Baie-Comeau, with average highs near 10.6°C and lows around 3.3°C (mean 7°C). It is about average for rainfall, averaging 91 mm of rainfall and 82% relative humidity across the period.
May is one of the warmer months of the year in Baie-Comeau. Across 45 years of records, the warmest May in Baie-Comeau was 2010 — when the month averaged 9.6°C — while the coldest was 1983 at 4.4°C. Typical May days reach 10.6°C with nights near 3.3°C. The long-term trend is warming, about 0.6°C per decade.
May is about average for rainfall in Baie-Comeau, averaging 91 mm of rainfall. The wettest May on record was 1983 with 188 mm, while the driest was 1992 at 35 mm.
Relative humidity in Baie-Comeau during May averages 82%. The most humid May was 1989 at 88%, and the least humid was 2023 at 78%.
May receives about 5.2 kWh/m²/day of solar energy in Baie-Comeau. The sunniest May was 2007 at 6.1 kWh/m²/day, and the cloudiest was 1993 at 3.8.
Average wind speed in Baie-Comeau during May is 1.9 m/s. The windiest Mays were 2023 and 2025 at 2.4 m/s, while the calmest were 2001 and 2003 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.1°C | 6.4°C | 6.8°C | 7.9°C | 8.0°C | +1.9°C |
| Avg High | 9.8°C | 10.2°C | 10.4°C | 11.4°C | 11.6°C | +1.8°C |
| Avg Low | 2.4°C | 2.6°C | 3.2°C | 4.5°C | 4.4°C | +2°C |
| Avg Rain | 108 mm | 86 mm | 78 mm | 101 mm | 81 mm | -27 mm |
May temperatures in Baie-Comeau have risen by about 2.9°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.8°C (2019) to a record high of 24.1°C (2023).
Rainfall in May is about average for rainfall, averaging 91 mm, with a wettest year of 188 mm.
A good time to visit Baie-Comeau
May is a good time to visit Baie-Comeau, with days averaging 10.6°C and nights around 3.3°C (mean 7°C, warmer than Baie-Comeau's yearly average) and higher rainfall. July and August are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 11.5°C | 8.1°C | 4.8°C | 20.8°C | -1.6°C | 130 mm | 83% | 2.4 m/s | 4.7 |
| 2024 | 12.6°C | 9.2°C | 5.9°C | 20.7°C | 1.1°C | 55 mm | 83% | 1.8 m/s | 4.9 |
| 2023 | 11.8°C | 8.3°C | 4.7°C | 24.1°C | 1.3°C | 54 mm | 78% | 2.4 m/s | 5.6 |
| 2022 | 11.7°C | 7.9°C | 4.1°C | 20.3°C | -1.8°C | 111 mm | 81% | 1.9 m/s | 5.6 |
| 2021 | 11.1°C | 7.6°C | 4.0°C | 20.6°C | -0.2°C | 70 mm | 80% | 2 m/s | 5.3 |
| 2020 | 10.8°C | 7.0°C | 3.1°C | 22.8°C | -2.1°C | 69 mm | 79% | 2.2 m/s | 5.6 |
| 2019 | 9.8°C | 6.2°C | 2.6°C | 16.0°C | -5.8°C | 76 mm | 81% | 1.9 m/s | 5.5 |
| 2018 | 9.9°C | 5.9°C | 1.9°C | 19.4°C | -3.1°C | 71 mm | 78% | 2.1 m/s | 6 |
| 2017 | 10.6°C | 7.5°C | 4.5°C | 15.4°C | -0.9°C | 127 mm | 86% | 2 m/s | 5 |
| 2016 | 12.6°C | 8.9°C | 5.2°C | 20.8°C | -0.4°C | 93 mm | 84% | 1.9 m/s | 5 |
| 2015 | 11.9°C | 8.3°C | 4.7°C | 18.6°C | 1.1°C | 74 mm | 82% | 2.2 m/s | 5 |
| 2014 | 10.8°C | 7.8°C | 4.8°C | 18.9°C | 0.9°C | 107 mm | 86% | 1.9 m/s | 4.4 |
| 2013 | 11.9°C | 8.6°C | 5.3°C | 19.4°C | 2.4°C | 134 mm | 83% | 1.9 m/s | 4.9 |
| 2012 | 12.9°C | 9.3°C | 5.6°C | 21.3°C | 1.1°C | 96 mm | 81% | 2.1 m/s | 5.5 |
| 2011 | 10.1°C | 7.1°C | 4.1°C | 17.1°C | 0.7°C | 155 mm | 86% | 2.2 m/s | 4.9 |
| 2010 🔥 | 13.4°C | 9.6°C | 5.8°C | 23.0°C | 0.8°C | 80 mm | 78% | 2.1 m/s | 5.6 |
| 2009 | 10.3°C | 6.9°C | 3.5°C | 17.5°C | -0.7°C | 78 mm | 80% | 2 m/s | 5.2 |
| 2008 | 11.3°C | 8.3°C | 5.2°C | 16.6°C | 0.0°C | 54 mm | 81% | 1.8 m/s | 4.9 |
| 2007 | 11.3°C | 7.7°C | 4.1°C | 22.0°C | -0.4°C | 45 mm | 78% | 2.1 m/s | 6.1 |
| 2006 | 11.9°C | 8.1°C | 4.3°C | 18.7°C | -2.0°C | 97 mm | 83% | 1.6 m/s | 4.8 |
| 2005 | 9.9°C | 7.0°C | 4.1°C | 17.1°C | -0.9°C | 79 mm | 84% | 2.1 m/s | 4.8 |
| 2004 | 8.9°C | 5.0°C | 1.1°C | 14.3°C | -3.9°C | 105 mm | 82% | 1.9 m/s | 5.1 |
| 2003 | 9.9°C | 6.1°C | 2.4°C | 19.7°C | -2.9°C | 56 mm | 81% | 1.4 m/s | 5.5 |
| 2002 | 9.3°C | 5.6°C | 1.9°C | 18.8°C | -3.0°C | 96 mm | 81% | 1.9 m/s | 4.9 |
| 2001 | 12.3°C | 8.1°C | 3.8°C | 17.7°C | -0.5°C | 50 mm | 84% | 1.4 m/s | 5.8 |
| 2000 | 9.0°C | 5.5°C | 2.0°C | 13.9°C | -2.3°C | 117 mm | 83% | 1.6 m/s | 5 |
| 1999 | 13.6°C | 9.2°C | 4.8°C | 20.9°C | -1.9°C | 82 mm | 81% | 1.7 m/s | 5.7 |
| 1998 | 12.3°C | 8.4°C | 4.5°C | 19.1°C | 1.4°C | 67 mm | 82% | 1.6 m/s | 5.3 |
| 1997 | 8.1°C | 4.8°C | 1.5°C | 15.4°C | -3.4°C | 158 mm | 83% | 2 m/s | 4.7 |
| 1996 | 9.0°C | 5.4°C | 1.8°C | 16.9°C | -2.3°C | 47 mm | 79% | 1.8 m/s | 5 |
| 1995 | 9.7°C | 5.9°C | 2.2°C | 14.5°C | -2.1°C | 63 mm | 83% | 1.5 m/s | 5 |
| 1994 | 9.2°C | 5.4°C | 1.6°C | 12.7°C | -2.2°C | 99 mm | 81% | 1.6 m/s | 5.4 |
| 1993 | 9.8°C | 6.3°C | 2.8°C | 15.5°C | -0.7°C | 105 mm | 83% | 1.6 m/s | 3.8 |
| 1992 | 10.8°C | 6.5°C | 2.1°C | 20.1°C | -2.7°C | 35 mm | 79% | 1.9 m/s | 5.9 |
| 1991 | 10.3°C | 6.2°C | 2.1°C | 17.3°C | -2.5°C | 94 mm | 81% | 1.7 m/s | 5.1 |
| 1990 | 9.1°C | 5.7°C | 2.2°C | 17.8°C | -1.9°C | 114 mm | 79% | 1.9 m/s | 5.2 |
| 1989 | 11.1°C | 7.5°C | 3.9°C | 16.5°C | 0.4°C | 109 mm | 88% | 1.5 m/s | 4.8 |
| 1988 | 11.7°C | 7.6°C | 3.5°C | 17.7°C | -0.7°C | 62 mm | 81% | 1.7 m/s | 5.4 |
| 1987 | 10.1°C | 6.1°C | 2.1°C | 16.2°C | -2.6°C | 73 mm | 78% | 1.9 m/s | 4.8 |
| 1986 | 10.7°C | 6.9°C | 3.0°C | 18.3°C | -3.4°C | 105 mm | 80% | 1.8 m/s | 5.5 |
| 1985 | 8.7°C | 5.0°C | 1.2°C | 14.3°C | -4.1°C | 105 mm | 81% | 1.7 m/s | 5.6 |
| 1984 | 9.1°C | 5.6°C | 2.1°C | 16.2°C | -1.1°C | 134 mm | 83% | 1.7 m/s | 4.3 |
| 1983 ❄️ 🌧️ | 7.3°C | 4.4°C | 1.6°C | 13.8°C | -1.9°C | 188 mm | 88% | 1.9 m/s | — |
| 1982 | 9.3°C | 5.4°C | 1.4°C | 18.4°C | -2.5°C | 55 mm | 83% | 1.6 m/s | — |
| 1981 | 9.9°C | 6.2°C | 2.5°C | 16.5°C | -1.4°C | 145 mm | 84% | 1.9 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 10.6°C with lows near 3.3°C (mean 7°C), based on 45 years of NASA POWER data.
May averages 91 mm of rainfall in Baie-Comeau, about average for rainfall. The wettest on record was 188 mm in 1983.
The hottest May reached 24.1°C in 2023. The coldest dipped to -5.8°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 2.9°C. Daytime highs moved from 8.9°C to 11.7°C and overnight lows from 1.8°C to 4.7°C over the same span.
May is one of the warmer months of the year in Baie-Comeau and about average for rainfall, so plan for around 10.6°C daytime highs and 3.3°C at night.
Not quite — May is the 8th coolest month in Baie-Comeau, averaging 7°C.
For May in Baie-Comeau, pack warm layers and a jacket for chilly mornings, with typical highs of 10.6°C and lows of 3.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 82% — quite humid.
Average wind speed in May is 1.9 m/s. The windiest May on record averaged 2.4 m/s (2023).
The wettest May on record was 1983 with 188 mm. On average, May sees 91 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 May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
