May is one of the warmer months of the year in Corner Brook, with average highs near 9.8°C and lows around 1.9°C (mean 5.9°C). It is one of the drier months, averaging 97 mm of rainfall and 83% relative humidity across the period.
May is one of the warmer months of the year in Corner Brook. Across 45 years of records, the warmest Mays in Corner Brook were 1989, 1999 and 2006 — when the month averaged 8.1°C — while the coldest was 2018 at 3.5°C. Typical May days reach 9.8°C with nights near 1.9°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Corner Brook, averaging 97 mm of rainfall. The wettest May on record was 1993 with 192 mm, while the driest was 1986 at 38 mm.
Relative humidity in Corner Brook during May averages 83%. The most humid May was 1981 at 87%, and the least humid was 2004 at 80%.
May receives about 4.7 kWh/m²/day of solar energy in Corner Brook. The sunniest May was 1999 at 5.4 kWh/m²/day, and the cloudiest was 1993 at 3.3.
Average wind speed in Corner Brook during May is 1.2 m/s. The windiest May was 2018 at 1.6 m/s, while the calmest was 1995 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.4°C | 5.3°C | 5.8°C | 5.9°C | 5.7°C | -0.7°C |
| Avg High | 10.6°C | 9.2°C | 9.8°C | 9.8°C | 9.3°C | -1.3°C |
| Avg Low | 2.3°C | 1.4°C | 1.7°C | 1.9°C | 2.0°C | -0.3°C |
| Avg Rain | 91 mm | 114 mm | 97 mm | 92 mm | 89 mm | -2 mm |
May temperatures in Corner Brook have stayed relatively stable across the record.
May has ranged from a record low of -6.8°C (1993) to a record high of 22.6°C (2014).
Rainfall in May is one of the drier months, averaging 97 mm, with a wettest year of 192 mm.
A good time to visit Corner Brook
May is a good time to visit Corner Brook, with days averaging 9.8°C and nights around 1.9°C (mean 5.9°C, warmer than Corner Brook's yearly average) and higher 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 | 9.7°C | 5.7°C | 1.7°C | 18.4°C | -3.0°C | 59 mm | 83% | 1.3 m/s | 5 |
| 2024 | 11.3°C | 7.3°C | 3.2°C | 17.0°C | -2.4°C | 94 mm | 85% | 1 m/s | 4.7 |
| 2023 | 8.5°C | 4.8°C | 1.0°C | 17.5°C | -1.8°C | 57 mm | 82% | 1.5 m/s | 4.7 |
| 2022 | 9.7°C | 5.9°C | 2.2°C | 14.5°C | -2.1°C | 91 mm | 82% | 1.2 m/s | 5.1 |
| 2021 | 8.8°C | 5.6°C | 2.3°C | 16.2°C | -0.3°C | 127 mm | 84% | 1.4 m/s | 4.8 |
| 2020 | 7.8°C | 4.7°C | 1.6°C | 17.8°C | -1.9°C | 109 mm | 85% | 1.5 m/s | 4.1 |
| 2019 | 8.2°C | 4.5°C | 0.7°C | 15.6°C | -2.0°C | 61 mm | 83% | 1.1 m/s | 4.6 |
| 2018 ❄️ | 7.3°C | 3.5°C | -0.2°C | 14.7°C | -3.5°C | 130 mm | 81% | 1.6 m/s | 5.1 |
| 2017 | 10.0°C | 5.8°C | 1.7°C | 15.6°C | -2.3°C | 81 mm | 82% | 1.3 m/s | 5 |
| 2016 | 10.5°C | 6.5°C | 2.6°C | 18.2°C | -0.6°C | 101 mm | 86% | 1.1 m/s | 4.5 |
| 2015 | 10.2°C | 6.0°C | 1.8°C | 18.0°C | -2.6°C | 80 mm | 82% | 1.2 m/s | 4.9 |
| 2014 | 9.6°C | 5.5°C | 1.4°C | 22.6°C | -2.7°C | 75 mm | 83% | 1.1 m/s | 4.6 |
| 2013 | 11.6°C | 7.4°C | 3.3°C | 18.3°C | -1.6°C | 108 mm | 83% | 1.3 m/s | 4.6 |
| 2012 | 11.7°C | 7.8°C | 3.8°C | 17.7°C | -1.5°C | 55 mm | 82% | 1.2 m/s | 5.2 |
| 2011 | 10.4°C | 6.4°C | 2.4°C | 16.3°C | -1.4°C | 104 mm | 85% | 1.2 m/s | 4.1 |
| 2010 | 8.4°C | 5.2°C | 1.9°C | 16.2°C | -0.2°C | 122 mm | 87% | 1.4 m/s | 4.4 |
| 2009 | 8.6°C | 4.7°C | 0.7°C | 15.2°C | -2.9°C | 123 mm | 83% | 1.3 m/s | 5.1 |
| 2008 | 11.0°C | 6.8°C | 2.7°C | 15.5°C | -1.7°C | 80 mm | 83% | 1.2 m/s | 4.4 |
| 2007 | 8.2°C | 4.4°C | 0.6°C | 17.9°C | -2.4°C | 100 mm | 83% | 1.2 m/s | 4.5 |
| 2006 | 12.7°C | 8.1°C | 3.5°C | 18.2°C | -1.7°C | 93 mm | 81% | 1 m/s | 5.2 |
| 2005 | 11.9°C | 7.4°C | 3.0°C | 18.9°C | -1.8°C | 42 mm | 82% | 1.1 m/s | 4.7 |
| 2004 | 8.7°C | 4.8°C | 0.8°C | 18.1°C | -2.0°C | 119 mm | 80% | 1.5 m/s | 5.3 |
| 2003 | 10.0°C | 5.9°C | 1.7°C | 17.9°C | -2.8°C | 81 mm | 82% | 1.1 m/s | 4.9 |
| 2002 | 8.0°C | 4.5°C | 1.0°C | 16.5°C | -3.1°C | 105 mm | 84% | 1.3 m/s | 4.8 |
| 2001 | 11.0°C | 6.6°C | 2.3°C | 17.7°C | -5.2°C | 55 mm | 82% | 1.1 m/s | 5.1 |
| 2000 | 8.4°C | 4.6°C | 0.7°C | 15.9°C | -2.7°C | 167 mm | 83% | 1.4 m/s | 4.6 |
| 1999 | 12.8°C | 8.1°C | 3.4°C | 21.0°C | -2.8°C | 83 mm | 81% | 1.2 m/s | 5.4 |
| 1998 | 12.0°C | 7.7°C | 3.4°C | 18.2°C | -2.9°C | 104 mm | 84% | 1.1 m/s | 4.8 |
| 1997 | 8.0°C | 4.5°C | 1.0°C | 13.1°C | -2.9°C | 131 mm | 87% | 1.2 m/s | 4.6 |
| 1996 | 7.5°C | 4.2°C | 0.9°C | 14.9°C | -2.8°C | 123 mm | 84% | 1.3 m/s | 3.7 |
| 1995 | 9.3°C | 5.3°C | 1.2°C | 15.2°C | -2.0°C | 41 mm | 81% | 0.9 m/s | 5.1 |
| 1994 | 8.2°C | 4.3°C | 0.4°C | 14.3°C | -3.5°C | 167 mm | 85% | 1.3 m/s | 4.3 |
| 1993 🌧️ | 9.3°C | 5.7°C | 2.2°C | 18.7°C | -6.8°C | 192 mm | 86% | 1.1 m/s | 3.3 |
| 1992 | 8.4°C | 4.5°C | 0.6°C | 18.0°C | -2.7°C | 79 mm | 82% | 1.2 m/s | 4.4 |
| 1991 | 8.2°C | 4.5°C | 0.7°C | 14.0°C | -2.2°C | 107 mm | 84% | 1.3 m/s | 4.2 |
| 1990 | 8.3°C | 4.4°C | 0.5°C | 14.7°C | -3.1°C | 113 mm | 83% | 1.4 m/s | 4.3 |
| 1989 🔥 | 12.6°C | 8.1°C | 3.7°C | 18.7°C | -1.6°C | 86 mm | 83% | 1 m/s | 4.5 |
| 1988 | 12.1°C | 7.8°C | 3.6°C | 17.9°C | -2.2°C | 113 mm | 83% | 1.1 m/s | 4.4 |
| 1987 | 9.5°C | 5.4°C | 1.3°C | 14.3°C | -1.7°C | 67 mm | 81% | 1.4 m/s | 5 |
| 1986 | 10.8°C | 6.0°C | 1.2°C | 17.9°C | -2.8°C | 38 mm | 80% | 1.2 m/s | 5 |
| 1985 | 7.7°C | 4.0°C | 0.2°C | 16.9°C | -5.6°C | 94 mm | 83% | 1.2 m/s | 5.2 |
| 1984 | 10.8°C | 6.9°C | 3.0°C | 18.2°C | -1.0°C | 100 mm | 86% | 1.3 m/s | 4.3 |
| 1983 | 10.2°C | 6.3°C | 2.4°C | 15.9°C | -0.5°C | 104 mm | 85% | 1.2 m/s | — |
| 1982 | 9.9°C | 5.9°C | 1.9°C | 19.7°C | -1.0°C | 103 mm | 83% | 1.2 m/s | — |
| 1981 | 11.4°C | 7.6°C | 3.8°C | 18.6°C | -0.8°C | 115 mm | 87% | 1.1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 9.8°C with lows near 1.9°C (mean 5.9°C), based on 45 years of NASA POWER data.
May averages 97 mm of rainfall in Corner Brook, one of the drier months. The wettest on record was 192 mm in 1993.
The hottest May reached 22.6°C in 2014. The coldest dipped to -6.8°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.2°C. Daytime highs moved from 10°C to 9.6°C and overnight lows from 2.3°C to 2.1°C over the same span.
May is one of the warmer months of the year in Corner Brook and one of the drier months, so plan for around 9.8°C daytime highs and 1.9°C at night.
Not quite — May is the 7th coolest month in Corner Brook, averaging 5.9°C.
For May in Corner Brook, pack warm layers and a jacket for chilly mornings, with typical highs of 9.8°C and lows of 1.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 83% — quite humid.
Average wind speed in May is 1.2 m/s. The windiest May on record averaged 1.6 m/s (2018).
The wettest May on record was 1993 with 192 mm. On average, May sees 97 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 Corner Brook 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.
