May is one of the warmer months of the year in Dolbeau, with average highs near 15.2°C and lows around 3.1°C (mean 9.2°C). It is about average for rainfall, averaging 85 mm of rainfall and 78% relative humidity across the period.
May is one of the warmer months of the year in Dolbeau. Across 45 years of records, the warmest May in Dolbeau was 1999 — when the month averaged 12.6°C — while the coldest was 1997 at 6°C. Typical May days reach 15.2°C with nights near 3.1°C. The long-term trend is warming, about 0.4°C per decade.
May is about average for rainfall in Dolbeau, averaging 85 mm of rainfall. The wettest May on record was 1983 with 173 mm, while the driest was 2007 at 25 mm.
Relative humidity in Dolbeau during May averages 78%. The most humid May was 2017 at 84%, and the least humid was 2023 at 70%.
May receives about 5.2 kWh/m²/day of solar energy in Dolbeau. The sunniest May was 2007 at 6.2 kWh/m²/day, and the cloudiest was 1984 at 4.2.
Average wind speed in Dolbeau during May is 0.4 m/s. The windiest Mays were 2018, 2020 and 2023, among others at 0.5 m/s, while the calmest were 2022, 2024 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.6°C | 8.8°C | 8.8°C | 9.7°C | 9.9°C | +1.3°C |
| Avg High | 14.4°C | 14.8°C | 14.8°C | 15.9°C | 16.2°C | +1.8°C |
| Avg Low | 2.7°C | 2.8°C | 2.8°C | 3.6°C | 3.7°C | +1°C |
| Avg Rain | 106 mm | 79 mm | 65 mm | 93 mm | 83 mm | -23 mm |
May temperatures in Dolbeau have risen by about 2.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -7.3°C (2019) to a record high of 30.8°C (2023).
Rainfall in May is about average for rainfall, averaging 85 mm, with a wettest year of 173 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Dolbeau
May is a good time to visit Dolbeau, with days averaging 15.2°C and nights around 3.1°C (mean 9.2°C, warmer than Dolbeau'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 | 16.2°C | 10.1°C | 3.9°C | 27.2°C | -4.7°C | 94 mm | 77% | 0.4 m/s | 4.7 |
| 2024 | 18.1°C | 12.1°C | 6.1°C | 26.4°C | -1.7°C | 62 mm | 75% | 0.4 m/s | 5.3 |
| 2023 | 15.9°C | 9.3°C | 2.8°C | 30.8°C | -3.8°C | 53 mm | 70% | 0.5 m/s | 5.7 |
| 2022 | 17.3°C | 10.9°C | 4.5°C | 27.0°C | -5.0°C | 144 mm | 76% | 0.4 m/s | 5.5 |
| 2021 | 15.7°C | 9.3°C | 2.9°C | 26.1°C | -4.7°C | 69 mm | 73% | 0.4 m/s | 5.6 |
| 2020 | 14.2°C | 7.9°C | 1.7°C | 29.1°C | -5.6°C | 75 mm | 76% | 0.5 m/s | 5.9 |
| 2019 | 13.1°C | 7.4°C | 1.8°C | 18.9°C | -7.3°C | 111 mm | 79% | 0.4 m/s | 5.2 |
| 2018 | 15.0°C | 8.2°C | 1.5°C | 28.3°C | -6.0°C | 64 mm | 76% | 0.5 m/s | 5.8 |
| 2017 | 15.0°C | 9.7°C | 4.5°C | 22.1°C | -1.8°C | 134 mm | 84% | 0.4 m/s | 4.4 |
| 2016 | 16.8°C | 10.3°C | 3.9°C | 27.3°C | -2.4°C | 68 mm | 79% | 0.4 m/s | 5.4 |
| 2015 | 16.5°C | 9.9°C | 3.2°C | 25.0°C | -2.7°C | 87 mm | 79% | 0.4 m/s | 5.4 |
| 2014 | 15.7°C | 10.1°C | 4.4°C | 23.3°C | -2.6°C | 97 mm | 82% | 0.4 m/s | 5 |
| 2013 | 17.0°C | 10.9°C | 4.8°C | 25.4°C | -2.7°C | 115 mm | 79% | 0.4 m/s | 5.1 |
| 2012 | 17.4°C | 10.7°C | 4.0°C | 28.9°C | -4.1°C | 83 mm | 77% | 0.4 m/s | 5.5 |
| 2011 | 15.4°C | 9.3°C | 3.2°C | 25.2°C | -1.6°C | 110 mm | 80% | 0.4 m/s | 5.1 |
| 2010 | 17.1°C | 10.7°C | 4.2°C | 29.3°C | -4.1°C | 64 mm | 74% | 0.4 m/s | 5.8 |
| 2009 | 13.0°C | 6.8°C | 0.5°C | 23.5°C | -4.0°C | 82 mm | 77% | 0.5 m/s | 4.9 |
| 2008 | 14.4°C | 8.3°C | 2.2°C | 21.8°C | -6.0°C | 50 mm | 75% | 0.4 m/s | 5.5 |
| 2007 | 16.1°C | 9.5°C | 3.0°C | 28.6°C | -3.6°C | 25 mm | 74% | 0.5 m/s | 6.2 |
| 2006 | 17.2°C | 11.3°C | 5.5°C | 29.1°C | -3.9°C | 75 mm | 80% | 0.4 m/s | 4.7 |
| 2005 | 14.8°C | 9.0°C | 3.2°C | 23.3°C | -5.4°C | 27 mm | 79% | 0.4 m/s | 4.9 |
| 2004 | 11.8°C | 6.1°C | 0.4°C | 22.1°C | -5.2°C | 105 mm | 81% | 0.5 m/s | 4.8 |
| 2003 | 15.8°C | 9.6°C | 3.5°C | 28.1°C | -4.7°C | 46 mm | 77% | 0.4 m/s | 5.5 |
| 2002 | 12.5°C | 6.8°C | 1.0°C | 24.1°C | -4.3°C | 85 mm | 79% | 0.5 m/s | 4.8 |
| 2001 | 18.6°C | 12.2°C | 5.7°C | 25.9°C | -1.9°C | 65 mm | 78% | 0.4 m/s | 5.6 |
| 2000 | 14.2°C | 8.6°C | 2.9°C | 22.4°C | -4.5°C | 93 mm | 81% | 0.4 m/s | 4.6 |
| 1999 🔥 | 19.5°C | 12.6°C | 5.6°C | 27.9°C | -3.1°C | 51 mm | 75% | 0.4 m/s | 5.9 |
| 1998 | 17.6°C | 11.7°C | 5.8°C | 23.7°C | -0.5°C | 78 mm | 79% | 0.4 m/s | 5.6 |
| 1997 ❄️ | 11.1°C | 6.0°C | 0.8°C | 21.2°C | -6.4°C | 106 mm | 82% | 0.5 m/s | 5.1 |
| 1996 | 12.9°C | 7.0°C | 1.1°C | 20.3°C | -4.5°C | 63 mm | 76% | 0.4 m/s | 5.4 |
| 1995 | 14.2°C | 8.6°C | 3.1°C | 22.8°C | -4.2°C | 113 mm | 81% | 0.4 m/s | 5 |
| 1994 | 13.9°C | 7.5°C | 1.0°C | 23.3°C | -5.6°C | 52 mm | 77% | 0.4 m/s | 5.6 |
| 1993 | 14.5°C | 9.4°C | 4.2°C | 19.7°C | 1.0°C | 93 mm | 81% | 0.4 m/s | 4.3 |
| 1992 | 15.5°C | 8.8°C | 2.1°C | 27.6°C | -5.3°C | 64 mm | 76% | 0.5 m/s | 5.9 |
| 1991 | 14.9°C | 9.1°C | 3.3°C | 25.5°C | -3.6°C | 93 mm | 79% | 0.5 m/s | 5.3 |
| 1990 | 14.0°C | 7.7°C | 1.4°C | 23.6°C | -4.6°C | 76 mm | 77% | 0.4 m/s | 5.4 |
| 1989 | 16.5°C | 10.9°C | 5.3°C | 26.9°C | -3.5°C | 123 mm | 83% | 0.4 m/s | 4.8 |
| 1988 | 16.5°C | 10.0°C | 3.6°C | 23.8°C | -4.8°C | 55 mm | 78% | 0.4 m/s | 5.4 |
| 1987 | 14.2°C | 7.9°C | 1.5°C | 23.4°C | -6.1°C | 92 mm | 76% | 0.5 m/s | 4.8 |
| 1986 | 16.0°C | 10.1°C | 4.2°C | 25.0°C | -6.0°C | 131 mm | 79% | 0.5 m/s | 4.8 |
| 1985 | 12.6°C | 6.6°C | 0.6°C | 19.7°C | -5.0°C | 114 mm | 78% | 0.4 m/s | 5.3 |
| 1984 | 12.8°C | 7.2°C | 1.6°C | 20.3°C | -3.7°C | 96 mm | 80% | 0.4 m/s | 4.2 |
| 1983 🌧️ | 11.2°C | 6.3°C | 1.5°C | 21.7°C | -5.3°C | 173 mm | 84% | 0.4 m/s | — |
| 1982 | 16.4°C | 10.2°C | 3.9°C | 27.8°C | -3.7°C | 53 mm | 80% | 0.4 m/s | — |
| 1981 | 13.8°C | 7.8°C | 1.8°C | 24.7°C | -4.1°C | 116 mm | 80% | 0.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.2°C with lows near 3.1°C (mean 9.2°C), based on 45 years of NASA POWER data.
May averages 85 mm of rainfall in Dolbeau, about average for rainfall. The wettest on record was 173 mm in 1983.
The hottest May reached 30.8°C in 2023. The coldest dipped to -7.3°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 2.7°C. Daytime highs moved from 13.4°C to 16.6°C and overnight lows from 1.9°C to 4°C over the same span.
May is one of the warmer months of the year in Dolbeau and about average for rainfall, so plan for around 15.2°C daytime highs and 3.1°C at night.
Not quite — May is the 8th coolest month in Dolbeau, averaging 9.2°C.
For May in Dolbeau, pack warm layers and a jacket for chilly mornings, with typical highs of 15.2°C and lows of 3.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 78% — quite humid.
Average wind speed in May is 0.4 m/s. The windiest May on record averaged 0.5 m/s (1986).
The wettest May on record was 1983 with 173 mm. On average, May 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 Dolbeau 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.
