May is one of the warmer months of the year in Campbellton, with average highs near 14.2°C and lows around 2.8°C (mean 8.5°C). It is about average for rainfall, averaging 91 mm of rainfall and 80% relative humidity across the period.
May is one of the warmer months of the year in Campbellton. Across 45 years of records, the warmest May in Campbellton was 1999 — when the month averaged 12°C — while the coldest was 1997 at 6.3°C. Typical May days reach 14.2°C with nights near 2.8°C. The long-term trend is warming, about 0.2°C per decade.
May is about average for rainfall in Campbellton, averaging 91 mm of rainfall. The wettest May on record was 2011 with 157 mm, while the driest was 1982 at 29 mm.
Relative humidity in Campbellton during May averages 80%. The most humid May was 1983 at 86%, and the least humid was 1987 at 75%.
May receives about 5.1 kWh/m²/day of solar energy in Campbellton. The sunniest May was 1992 at 6.4 kWh/m²/day, and the cloudiest was 1989 at 4.2.
Average wind speed in Campbellton during May is 0.3 m/s. The windiest May was 2023 at 0.4 m/s, while the calmest were 1998 and 2001 at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.4°C | 8.2°C | 8.3°C | 8.8°C | 8.9°C | +0.5°C |
| Avg High | 14.2°C | 14.0°C | 14.0°C | 14.4°C | 14.7°C | +0.5°C |
| Avg Low | 2.6°C | 2.5°C | 2.6°C | 3.3°C | 3.1°C | +0.5°C |
| Avg Rain | 91 mm | 88 mm | 85 mm | 106 mm | 82 mm | -10 mm |
May temperatures in Campbellton have risen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.8°C (2002) to a record high of 29.7°C (2007).
Rainfall in May is about average for rainfall, averaging 91 mm, with a wettest year of 157 mm.
A good time to visit Campbellton
May is a good time to visit Campbellton, with days averaging 14.2°C and nights around 2.8°C (mean 8.5°C, warmer than Campbellton'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 | 14.3°C | 8.7°C | 3.1°C | 26.6°C | -3.4°C | 105 mm | 82% | 0.3 m/s | 4.8 |
| 2024 | 16.7°C | 10.8°C | 5.0°C | 25.5°C | -1.4°C | 51 mm | 80% | 0.3 m/s | 5.1 |
| 2023 | 13.5°C | 8.3°C | 3.0°C | 28.0°C | -1.5°C | 71 mm | 77% | 0.4 m/s | 5.2 |
| 2022 | 15.6°C | 9.3°C | 2.9°C | 22.5°C | -3.9°C | 126 mm | 78% | 0.3 m/s | 5.7 |
| 2021 | 14.4°C | 8.5°C | 2.6°C | 25.8°C | -2.9°C | 79 mm | 78% | 0.3 m/s | 5.3 |
| 2020 | 13.7°C | 7.8°C | 1.9°C | 28.7°C | -4.9°C | 59 mm | 76% | 0.3 m/s | 5.8 |
| 2019 | 11.9°C | 6.5°C | 1.0°C | 20.8°C | -4.9°C | 78 mm | 80% | 0.3 m/s | 5.1 |
| 2018 | 14.3°C | 7.7°C | 1.0°C | 26.6°C | -4.9°C | 73 mm | 76% | 0.3 m/s | 5.9 |
| 2017 | 13.6°C | 8.8°C | 4.1°C | 24.5°C | -0.3°C | 149 mm | 84% | 0.3 m/s | 4.9 |
| 2016 | 15.2°C | 9.4°C | 3.7°C | 24.4°C | -1.7°C | 94 mm | 82% | 0.3 m/s | 5.1 |
| 2015 | 15.8°C | 9.8°C | 3.8°C | 24.7°C | -1.6°C | 77 mm | 79% | 0.3 m/s | 5.3 |
| 2014 | 13.4°C | 8.3°C | 3.3°C | 22.8°C | -2.9°C | 98 mm | 85% | 0.3 m/s | 4.6 |
| 2013 | 15.5°C | 9.8°C | 4.1°C | 24.2°C | -1.4°C | 146 mm | 82% | 0.3 m/s | 4.8 |
| 2012 | 15.2°C | 9.7°C | 4.2°C | 27.3°C | -2.3°C | 93 mm | 80% | 0.3 m/s | 5.5 |
| 2011 🌧️ | 13.2°C | 8.1°C | 3.0°C | 22.0°C | -2.7°C | 157 mm | 85% | 0.3 m/s | 4.4 |
| 2010 | 15.8°C | 10.1°C | 4.4°C | 26.5°C | -1.9°C | 89 mm | 78% | 0.3 m/s | 5.4 |
| 2009 | 13.8°C | 8.0°C | 2.3°C | 23.9°C | -3.7°C | 107 mm | 78% | 0.3 m/s | 5.4 |
| 2008 | 13.7°C | 8.6°C | 3.4°C | 18.9°C | -2.1°C | 69 mm | 79% | 0.3 m/s | 5.1 |
| 2007 | 13.6°C | 8.0°C | 2.4°C | 29.7°C | -3.2°C | 59 mm | 77% | 0.3 m/s | 5.4 |
| 2006 | 15.6°C | 9.8°C | 4.0°C | 22.9°C | -3.8°C | 106 mm | 81% | 0.3 m/s | 4.8 |
| 2005 | 12.2°C | 7.4°C | 2.6°C | 22.4°C | -3.6°C | 82 mm | 82% | 0.3 m/s | 4.8 |
| 2004 | 14.0°C | 7.9°C | 1.7°C | 23.9°C | -4.8°C | 83 mm | 77% | 0.3 m/s | 5.3 |
| 2003 | 13.8°C | 7.7°C | 1.7°C | 27.4°C | -4.0°C | 90 mm | 78% | 0.3 m/s | 5 |
| 2002 | 12.9°C | 7.3°C | 1.6°C | 22.9°C | -5.8°C | 76 mm | 78% | 0.3 m/s | 4.8 |
| 2001 | 17.9°C | 11.2°C | 4.5°C | 24.9°C | -3.3°C | 60 mm | 79% | 0.2 m/s | 5.6 |
| 2000 | 12.5°C | 7.1°C | 1.7°C | 21.4°C | -4.1°C | 115 mm | 81% | 0.3 m/s | 4.9 |
| 1999 🔥 | 18.6°C | 12.0°C | 5.3°C | 27.4°C | -3.2°C | 44 mm | 76% | 0.3 m/s | 5.9 |
| 1998 | 17.2°C | 11.2°C | 5.2°C | 24.3°C | -2.6°C | 106 mm | 81% | 0.2 m/s | 5.3 |
| 1997 ❄️ | 11.2°C | 6.3°C | 1.3°C | 19.1°C | -3.8°C | 153 mm | 82% | 0.3 m/s | 4.7 |
| 1996 | 12.3°C | 6.7°C | 1.2°C | 19.7°C | -4.9°C | 53 mm | 77% | 0.3 m/s | 5.1 |
| 1995 | 13.7°C | 7.8°C | 1.9°C | 19.4°C | -3.1°C | 58 mm | 80% | 0.3 m/s | 4.8 |
| 1994 | 12.4°C | 7.0°C | 1.6°C | 21.3°C | -2.3°C | 147 mm | 81% | 0.3 m/s | 4.8 |
| 1993 | 13.4°C | 8.1°C | 2.8°C | 20.4°C | -2.6°C | 93 mm | 81% | 0.3 m/s | 4.3 |
| 1992 | 15.2°C | 8.5°C | 1.9°C | 28.1°C | -4.8°C | 32 mm | 75% | 0.3 m/s | 6.4 |
| 1991 | 13.7°C | 7.9°C | 2.1°C | 22.8°C | -3.8°C | 101 mm | 80% | 0.3 m/s | 5.3 |
| 1990 | 12.1°C | 6.8°C | 1.5°C | 22.3°C | -3.8°C | 98 mm | 79% | 0.3 m/s | 5.1 |
| 1989 | 16.4°C | 10.9°C | 5.4°C | 23.8°C | -2.6°C | 104 mm | 85% | 0.3 m/s | 4.2 |
| 1988 | 15.9°C | 9.8°C | 3.6°C | 23.4°C | -4.0°C | 56 mm | 79% | 0.3 m/s | 5.2 |
| 1987 | 14.4°C | 8.2°C | 2.0°C | 21.3°C | -5.0°C | 49 mm | 75% | 0.3 m/s | 5.2 |
| 1986 | 15.0°C | 8.6°C | 2.3°C | 24.3°C | -4.2°C | 77 mm | 77% | 0.3 m/s | 5.3 |
| 1985 | 12.6°C | 7.0°C | 1.3°C | 20.0°C | -4.5°C | 102 mm | 78% | 0.3 m/s | 5.3 |
| 1984 | 12.6°C | 7.3°C | 2.0°C | 23.2°C | -1.9°C | 136 mm | 83% | 0.3 m/s | 4.3 |
| 1983 | 11.6°C | 6.9°C | 2.2°C | 17.5°C | -2.7°C | 145 mm | 86% | 0.3 m/s | — |
| 1982 | 14.4°C | 8.1°C | 1.8°C | 26.4°C | -3.5°C | 29 mm | 79% | 0.3 m/s | — |
| 1981 | 14.8°C | 9.0°C | 3.2°C | 22.5°C | -4.4°C | 122 mm | 83% | 0.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 14.2°C with lows near 2.8°C (mean 8.5°C), based on 45 years of NASA POWER data.
May averages 91 mm of rainfall in Campbellton, about average for rainfall. The wettest on record was 157 mm in 2011.
The hottest May reached 29.7°C in 2007. The coldest dipped to -5.8°C in 2002.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.4°C. Daytime highs moved from 13.2°C to 14.9°C and overnight lows from 2.1°C to 3.3°C over the same span.
May is one of the warmer months of the year in Campbellton and about average for rainfall, so plan for around 14.2°C daytime highs and 2.8°C at night.
Not quite — May is the 8th coolest month in Campbellton, averaging 8.5°C.
For May in Campbellton, pack warm layers and a jacket for chilly mornings, with typical highs of 14.2°C and lows of 2.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 80% — quite humid.
Average wind speed in May is 0.3 m/s. The windiest May on record averaged 0.4 m/s (2023).
The wettest May on record was 2011 with 157 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 Campbellton 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.
