May is one of the warmer months of the year in Campbell River, with average highs near 15.4°C and lows around 6.9°C (mean 11.2°C). It is one of the drier months, averaging 70 mm of rainfall and 76% relative humidity across the period.
May is one of the warmer months of the year in Campbell River. Across 45 years of records, the warmest May in Campbell River was 2023 — when the month averaged 14.9°C — while the coldest was 1984 at 8.1°C. Typical May days reach 15.4°C with nights near 6.9°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Campbell River, averaging 70 mm of rainfall. The wettest May on record was 1986 with 139 mm, while the driest was 2018 at 22 mm.
Relative humidity in Campbell River during May averages 76%. The most humid May was 2022 at 80%, and the least humid were 1992 and 1995 at 71%.
May receives about 4.8 kWh/m²/day of solar energy in Campbell River. The sunniest May was 2015 at 5.9 kWh/m²/day, and the cloudiest was 1984 at 3.9.
Average wind speed in Campbell River during May is 0.7 m/s. The windiest Mays were 2022, 2024 and 2025, among others at 0.8 m/s, while the calmest was 2015 at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.4°C | 11.4°C | 10.8°C | 12.1°C | 11.3°C | +0.9°C |
| Avg High | 14.6°C | 15.7°C | 14.9°C | 16.4°C | 15.5°C | +0.9°C |
| Avg Low | 6.2°C | 7.0°C | 6.6°C | 7.7°C | 7.0°C | +0.8°C |
| Avg Rain | 84 mm | 71 mm | 68 mm | 62 mm | 64 mm | -19 mm |
May temperatures in Campbell River have risen by about 0.9°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -0.4°C (1985) to a record high of 30.7°C (2023).
Rainfall in May is one of the drier months, averaging 70 mm, with a wettest year of 139 mm.
A good time to visit Campbell River
May is a good time to visit Campbell River, with days averaging 15.4°C and nights around 6.9°C (mean 11.2°C, warmer than Campbell River's yearly average) and moderate rainfall. August and July 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 | 14.6°C | 10.7°C | 6.7°C | 21.8°C | 2.9°C | 63 mm | 77% | 0.8 m/s | 4.6 |
| 2024 | 15.5°C | 10.8°C | 6.2°C | 24.3°C | 2.7°C | 59 mm | 76% | 0.8 m/s | 5.1 |
| 2023 🔥 | 19.9°C | 14.9°C | 9.8°C | 30.7°C | 5.7°C | 36 mm | 73% | 0.6 m/s | 5.7 |
| 2022 | 12.0°C | 8.6°C | 5.1°C | 18.0°C | 1.5°C | 108 mm | 80% | 0.8 m/s | 4.1 |
| 2021 | 15.2°C | 10.9°C | 6.6°C | 20.8°C | 3.4°C | 54 mm | 76% | 0.7 m/s | 5 |
| 2020 | 15.9°C | 11.6°C | 7.4°C | 22.5°C | 3.0°C | 66 mm | 76% | 0.8 m/s | 5 |
| 2019 | 19.2°C | 14.0°C | 8.9°C | 24.9°C | 4.4°C | 28 mm | 74% | 0.7 m/s | 5.8 |
| 2018 | 18.7°C | 14.1°C | 9.4°C | 27.0°C | 3.6°C | 22 mm | 73% | 0.6 m/s | 5.4 |
| 2017 | 16.1°C | 11.7°C | 7.3°C | 24.7°C | 2.6°C | 89 mm | 77% | 0.7 m/s | 4.8 |
| 2016 | 17.5°C | 12.8°C | 8.0°C | 23.0°C | 5.3°C | 51 mm | 74% | 0.7 m/s | 5.6 |
| 2015 | 18.8°C | 14.1°C | 9.4°C | 24.0°C | 2.7°C | 23 mm | 74% | 0.5 m/s | 5.9 |
| 2014 | 16.4°C | 12.5°C | 8.6°C | 23.0°C | 4.8°C | 76 mm | 77% | 0.6 m/s | 4.8 |
| 2013 | 16.1°C | 12.1°C | 8.0°C | 26.3°C | 2.5°C | 87 mm | 76% | 0.7 m/s | 4.5 |
| 2012 | 14.2°C | 9.9°C | 5.7°C | 22.5°C | 1.3°C | 55 mm | 74% | 0.7 m/s | 5 |
| 2011 | 12.9°C | 9.4°C | 5.8°C | 19.2°C | 2.4°C | 88 mm | 79% | 0.7 m/s | 4.1 |
| 2010 | 13.7°C | 9.9°C | 6.1°C | 20.3°C | 0.6°C | 97 mm | 76% | 0.7 m/s | 4.5 |
| 2009 | 14.6°C | 10.3°C | 5.9°C | 21.8°C | 1.8°C | 78 mm | 76% | 0.7 m/s | 5.1 |
| 2008 | 15.6°C | 11.4°C | 7.1°C | 25.5°C | 1.7°C | 59 mm | 76% | 0.7 m/s | 4.7 |
| 2007 | 15.1°C | 10.6°C | 6.1°C | 23.9°C | 2.0°C | 55 mm | 75% | 0.7 m/s | 4.9 |
| 2006 | 15.6°C | 11.2°C | 6.7°C | 24.0°C | 1.5°C | 51 mm | 74% | 0.7 m/s | 5 |
| 2005 | 16.8°C | 12.8°C | 8.9°C | 28.5°C | 4.6°C | 101 mm | 77% | 0.8 m/s | 4.7 |
| 2004 | 16.8°C | 12.7°C | 8.5°C | 22.2°C | 5.0°C | 44 mm | 74% | 0.7 m/s | 5 |
| 2003 | 13.9°C | 10.0°C | 6.2°C | 20.1°C | 1.3°C | 67 mm | 77% | 0.7 m/s | 4.3 |
| 2002 | 13.9°C | 9.8°C | 5.7°C | 19.4°C | 0.7°C | 44 mm | 76% | 0.8 m/s | 4.9 |
| 2001 | 13.4°C | 9.4°C | 5.3°C | 24.6°C | 2.4°C | 76 mm | 78% | 0.7 m/s | 4.3 |
| 2000 | 13.2°C | 9.3°C | 5.4°C | 20.1°C | 1.6°C | 106 mm | 78% | 0.7 m/s | 4.6 |
| 1999 | 12.5°C | 8.4°C | 4.2°C | 23.0°C | 0.9°C | 87 mm | 75% | 0.8 m/s | 4.6 |
| 1998 | 16.7°C | 12.4°C | 8.1°C | 26.2°C | 4.9°C | 62 mm | 77% | 0.6 m/s | 4.7 |
| 1997 | 17.0°C | 12.6°C | 8.3°C | 24.5°C | 2.5°C | 103 mm | 75% | 0.7 m/s | 4.7 |
| 1996 | 13.0°C | 9.1°C | 5.3°C | 19.6°C | 0.4°C | 86 mm | 78% | 0.8 m/s | 5 |
| 1995 | 18.1°C | 13.1°C | 8.0°C | 25.2°C | 3.4°C | 34 mm | 71% | 0.7 m/s | 5.4 |
| 1994 | 15.9°C | 11.6°C | 7.2°C | 22.0°C | 3.4°C | 42 mm | 74% | 0.7 m/s | 4.3 |
| 1993 | 17.0°C | 12.8°C | 8.7°C | 29.5°C | 2.3°C | 131 mm | 78% | 0.7 m/s | 4.2 |
| 1992 | 16.9°C | 12.1°C | 7.4°C | 24.0°C | 1.5°C | 26 mm | 71% | 0.7 m/s | 5.3 |
| 1991 | 15.1°C | 10.6°C | 6.1°C | 21.6°C | 2.8°C | 61 mm | 78% | 0.7 m/s | 4.2 |
| 1990 | 15.0°C | 10.9°C | 6.8°C | 20.4°C | 3.6°C | 76 mm | 79% | 0.7 m/s | 4.2 |
| 1989 | 15.8°C | 11.4°C | 7.0°C | 21.4°C | 3.0°C | 70 mm | 74% | 0.6 m/s | 4.5 |
| 1988 | 13.9°C | 9.9°C | 6.0°C | 22.0°C | 1.3°C | 104 mm | 78% | 0.8 m/s | 4.1 |
| 1987 | 15.4°C | 10.9°C | 6.3°C | 23.9°C | 3.7°C | 86 mm | 76% | 0.8 m/s | 4.8 |
| 1986 🌧️ | 13.8°C | 9.9°C | 6.0°C | 26.4°C | 2.3°C | 139 mm | 79% | 0.8 m/s | 4.3 |
| 1985 | 15.5°C | 10.9°C | 6.4°C | 24.9°C | -0.4°C | 46 mm | 75% | 0.7 m/s | 4.6 |
| 1984 ❄️ | 11.8°C | 8.1°C | 4.4°C | 19.0°C | 1.4°C | 136 mm | 80% | 0.8 m/s | 3.9 |
| 1983 | 17.1°C | 12.3°C | 7.5°C | 28.8°C | 3.0°C | 24 mm | 74% | 0.7 m/s | — |
| 1982 | 14.5°C | 10.0°C | 5.5°C | 22.2°C | 0.8°C | 34 mm | 74% | 0.7 m/s | — |
| 1981 | 14.0°C | 10.3°C | 6.6°C | 20.5°C | 3.1°C | 114 mm | 79% | 0.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.4°C with lows near 6.9°C (mean 11.2°C), based on 45 years of NASA POWER data.
May averages 70 mm of rainfall in Campbell River, one of the drier months. The wettest on record was 139 mm in 1986.
The hottest May reached 30.7°C in 2023. The coldest dipped to -0.4°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.9°C. Daytime highs moved from 14.6°C to 15.4°C and overnight lows from 6.1°C to 6.9°C over the same span.
May is one of the warmer months of the year in Campbell River and one of the drier months, so plan for around 15.4°C daytime highs and 6.9°C at night.
Not quite — May is the 8th coolest month in Campbell River, averaging 11.2°C.
For May in Campbell River, pack warm layers and a jacket for chilly mornings, with typical highs of 15.4°C and lows of 6.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 76% — quite humid.
Average wind speed in May is 0.7 m/s. The windiest May on record averaged 0.8 m/s (1984).
The wettest May on record was 1986 with 139 mm. On average, May sees 70 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 Campbell River 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.
