May is one of the warmer months of the year in Edmundston, with average highs near 14.7°C and lows around 3.2°C (mean 9°C). It is about average for rainfall, averaging 96 mm of rainfall and 81% relative humidity across the period.
May is one of the warmer months of the year in Edmundston. Across 45 years of records, the warmest May in Edmundston was 1999 — when the month averaged 12.4°C — while the coldest was 1997 at 6.5°C. Typical May days reach 14.7°C with nights near 3.2°C. The long-term trend is warming, about 0.2°C per decade.
May is about average for rainfall in Edmundston, averaging 96 mm of rainfall. The wettest May on record was 2011 with 161 mm, while the driest was 1982 at 26 mm.
Relative humidity in Edmundston during May averages 81%. The most humid May was 2011 at 86%, and the least humid was 1987 at 76%.
May receives about 5.2 kWh/m²/day of solar energy in Edmundston. The sunniest May was 2018 at 6.2 kWh/m²/day, and the cloudiest were 1984 and 1989 at 4.3.
Average wind speed in Edmundston during May is 0.2 m/s. The windiest Mays were 2022, 2023 and 2025, among others at 0.2 m/s, while the calmest were 2011, 2013 and 2024, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.8°C | 8.7°C | 8.6°C | 9.3°C | 9.4°C | +0.6°C |
| Avg High | 14.7°C | 14.5°C | 14.3°C | 14.9°C | 15.4°C | +0.7°C |
| Avg Low | 3.0°C | 2.9°C | 2.9°C | 3.6°C | 3.5°C | +0.5°C |
| Avg Rain | 96 mm | 94 mm | 91 mm | 107 mm | 90 mm | -6 mm |
May temperatures in Edmundston have risen by about 1.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.6°C (1985) to a record high of 29.1°C (2020).
Rainfall in May is about average for rainfall, averaging 96 mm, with a wettest year of 161 mm.
A good time to visit Edmundston
May is a good time to visit Edmundston, with days averaging 14.7°C and nights around 3.2°C (mean 9°C, warmer than Edmundston'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 | 15.1°C | 9.5°C | 3.8°C | 26.2°C | -4.5°C | 100 mm | 82% | 0.2 m/s | 4.9 |
| 2024 | 17.2°C | 11.3°C | 5.4°C | 26.8°C | -2.2°C | 55 mm | 80% | 0.1 m/s | 5.1 |
| 2023 | 14.3°C | 8.5°C | 2.8°C | 28.3°C | -2.4°C | 66 mm | 77% | 0.2 m/s | 5.5 |
| 2022 | 16.6°C | 10.2°C | 3.9°C | 23.7°C | -3.9°C | 150 mm | 78% | 0.2 m/s | 5.9 |
| 2021 | 15.0°C | 8.8°C | 2.7°C | 26.1°C | -3.3°C | 85 mm | 77% | 0.2 m/s | 5.7 |
| 2020 | 14.2°C | 8.2°C | 2.2°C | 29.1°C | -4.0°C | 80 mm | 78% | 0.2 m/s | 5.8 |
| 2019 | 12.5°C | 6.9°C | 1.4°C | 20.4°C | -5.1°C | 89 mm | 81% | 0.2 m/s | 5.3 |
| 2018 | 14.9°C | 8.3°C | 1.8°C | 27.2°C | -4.8°C | 87 mm | 77% | 0.2 m/s | 6.2 |
| 2017 | 14.5°C | 9.5°C | 4.5°C | 25.7°C | -0.8°C | 135 mm | 84% | 0.2 m/s | 4.5 |
| 2016 | 15.6°C | 9.6°C | 3.5°C | 24.0°C | -2.0°C | 88 mm | 82% | 0.2 m/s | 5.1 |
| 2015 | 16.6°C | 10.4°C | 4.3°C | 25.0°C | -1.7°C | 86 mm | 80% | 0.2 m/s | 5.3 |
| 2014 | 14.2°C | 9.1°C | 4.0°C | 21.4°C | -3.2°C | 96 mm | 84% | 0.2 m/s | 4.7 |
| 2013 | 16.0°C | 10.1°C | 4.2°C | 25.8°C | -0.5°C | 147 mm | 82% | 0.1 m/s | 4.9 |
| 2012 | 15.5°C | 9.9°C | 4.4°C | 26.8°C | -1.9°C | 101 mm | 82% | 0.2 m/s | 5.2 |
| 2011 🌧️ | 13.6°C | 8.6°C | 3.7°C | 20.9°C | -3.0°C | 161 mm | 86% | 0.1 m/s | 4.4 |
| 2010 | 16.0°C | 10.4°C | 4.7°C | 26.3°C | -2.9°C | 79 mm | 79% | 0.2 m/s | 6 |
| 2009 | 13.8°C | 8.1°C | 2.4°C | 23.8°C | -3.1°C | 110 mm | 79% | 0.2 m/s | 5.3 |
| 2008 | 13.6°C | 8.4°C | 3.1°C | 18.9°C | -4.0°C | 53 mm | 80% | 0.2 m/s | 5.7 |
| 2007 | 14.1°C | 8.3°C | 2.5°C | 27.6°C | -3.3°C | 61 mm | 79% | 0.2 m/s | 5.5 |
| 2006 | 16.4°C | 10.7°C | 5.1°C | 24.0°C | -3.0°C | 115 mm | 83% | 0.1 m/s | 4.4 |
| 2005 | 12.0°C | 7.3°C | 2.5°C | 21.1°C | -3.8°C | 95 mm | 84% | 0.2 m/s | 4.5 |
| 2004 | 14.1°C | 8.1°C | 2.1°C | 24.1°C | -5.2°C | 95 mm | 80% | 0.2 m/s | 5 |
| 2003 | 14.3°C | 8.3°C | 2.2°C | 26.7°C | -4.1°C | 87 mm | 79% | 0.2 m/s | 4.9 |
| 2002 | 12.9°C | 7.2°C | 1.6°C | 22.5°C | -4.6°C | 97 mm | 80% | 0.2 m/s | 4.8 |
| 2001 | 18.4°C | 11.8°C | 5.3°C | 24.7°C | -2.1°C | 56 mm | 78% | 0.2 m/s | 5.6 |
| 2000 | 13.2°C | 7.8°C | 2.4°C | 19.9°C | -3.6°C | 145 mm | 83% | 0.2 m/s | 4.9 |
| 1999 🔥 | 18.9°C | 12.4°C | 6.0°C | 27.5°C | -2.8°C | 60 mm | 77% | 0.2 m/s | 6.1 |
| 1998 | 17.4°C | 11.7°C | 5.9°C | 23.6°C | -1.5°C | 90 mm | 82% | 0.1 m/s | 5.3 |
| 1997 ❄️ | 11.6°C | 6.5°C | 1.5°C | 19.8°C | -4.7°C | 161 mm | 83% | 0.2 m/s | 4.8 |
| 1996 | 12.6°C | 7.0°C | 1.3°C | 20.1°C | -4.7°C | 77 mm | 80% | 0.2 m/s | 5.3 |
| 1995 | 14.4°C | 8.7°C | 3.0°C | 19.7°C | -4.5°C | 73 mm | 80% | 0.2 m/s | 4.7 |
| 1994 | 12.8°C | 7.4°C | 1.9°C | 24.0°C | -2.0°C | 132 mm | 82% | 0.2 m/s | 4.9 |
| 1993 | 14.4°C | 8.9°C | 3.4°C | 20.4°C | -0.5°C | 97 mm | 81% | 0.2 m/s | 4.6 |
| 1992 | 15.5°C | 8.8°C | 2.1°C | 27.6°C | -5.2°C | 42 mm | 77% | 0.2 m/s | 6.1 |
| 1991 | 14.4°C | 8.5°C | 2.5°C | 24.5°C | -3.6°C | 106 mm | 80% | 0.2 m/s | 5.3 |
| 1990 | 12.8°C | 7.2°C | 1.7°C | 22.5°C | -2.3°C | 104 mm | 80% | 0.2 m/s | 5.1 |
| 1989 | 17.1°C | 11.6°C | 6.1°C | 25.8°C | -1.2°C | 125 mm | 84% | 0.2 m/s | 4.3 |
| 1988 | 16.0°C | 9.9°C | 3.8°C | 22.9°C | -2.7°C | 57 mm | 79% | 0.2 m/s | 5.1 |
| 1987 | 14.8°C | 8.4°C | 2.1°C | 21.9°C | -4.8°C | 57 mm | 76% | 0.2 m/s | 5.4 |
| 1986 | 15.6°C | 9.3°C | 3.0°C | 23.9°C | -4.8°C | 77 mm | 78% | 0.2 m/s | 5.3 |
| 1985 | 13.1°C | 7.2°C | 1.3°C | 20.9°C | -5.6°C | 87 mm | 80% | 0.2 m/s | 5.4 |
| 1984 | 12.3°C | 7.1°C | 2.0°C | 23.8°C | -1.8°C | 152 mm | 84% | 0.2 m/s | 4.3 |
| 1983 | 12.5°C | 7.7°C | 2.8°C | 18.9°C | -2.0°C | 158 mm | 85% | 0.2 m/s | — |
| 1982 | 15.1°C | 8.7°C | 2.3°C | 25.9°C | -4.2°C | 26 mm | 80% | 0.2 m/s | — |
| 1981 | 15.4°C | 9.5°C | 3.7°C | 24.1°C | -4.1°C | 122 mm | 83% | 0.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 14.7°C with lows near 3.2°C (mean 9°C), based on 45 years of NASA POWER data.
May averages 96 mm of rainfall in Edmundston, about average for rainfall. The wettest on record was 161 mm in 2011.
The hottest May reached 29.1°C in 2020. The coldest dipped to -5.6°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.7°C. Daytime highs moved from 13.7°C to 15.6°C and overnight lows from 2.4°C to 3.7°C over the same span.
May is one of the warmer months of the year in Edmundston and about average for rainfall, so plan for around 14.7°C daytime highs and 3.2°C at night.
Not quite — May is the 8th coolest month in Edmundston, averaging 9°C.
For May in Edmundston, pack warm layers and a jacket for chilly mornings, with typical highs of 14.7°C and lows of 3.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 81% — quite humid.
Average wind speed in May is 0.2 m/s. The windiest May on record averaged 0.2 m/s (1981).
The wettest May on record was 2011 with 161 mm. On average, May 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 Edmundston 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.
