May is one of the warmer months of the year in Oromocto, with average highs near 16.1°C and lows around 5.2°C (mean 10.7°C). It is about average for rainfall, averaging 94 mm of rainfall and 80% relative humidity across the period.
May is one of the warmer months of the year in Oromocto. Across 45 years of records, the warmest May in Oromocto was 1999 — when the month averaged 13.3°C — while the coldest was 2005 at 8.3°C. Typical May days reach 16.1°C with nights near 5.2°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Oromocto, averaging 94 mm of rainfall. The wettest May on record was 1990 with 201 mm, while the driest was 1982 at 31 mm.
Relative humidity in Oromocto during May averages 80%. The most humid May was 2011 at 86%, and the least humid was 1987 at 76%.
May receives about 5.1 kWh/m²/day of solar energy in Oromocto. The sunniest May was 2018 at 6.4 kWh/m²/day, and the cloudiest were 2005 and 2011 at 4.
Average wind speed in Oromocto during May is 0.6 m/s. The windiest Mays were 2018, 2020 and 2023, among others at 0.7 m/s, while the calmest were 2022, 2024 and 2025, among others at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.7°C | 10.4°C | 10.4°C | 10.7°C | 11.0°C | +0.3°C |
| Avg High | 16.2°C | 15.9°C | 15.7°C | 16.0°C | 16.8°C | +0.6°C |
| Avg Low | 5.3°C | 4.9°C | 5.0°C | 5.4°C | 5.3°C | 0°C |
| Avg Rain | 105 mm | 102 mm | 91 mm | 100 mm | 58 mm | -46 mm |
May temperatures in Oromocto have risen by about 1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -3.6°C (2003) to a record high of 29.2°C (1992).
Rainfall in May is about average for rainfall, averaging 94 mm, with a wettest year of 201 mm.
A good time to visit Oromocto
May is a good time to visit Oromocto, with days averaging 16.1°C and nights around 5.2°C (mean 10.7°C, warmer than Oromocto'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 | 15.9°C | 10.8°C | 5.7°C | 25.4°C | -1.2°C | 87 mm | 82% | 0.6 m/s | 4.4 |
| 2024 | 17.9°C | 12.2°C | 6.5°C | 24.0°C | -1.1°C | 36 mm | 81% | 0.6 m/s | 5.3 |
| 2023 | 16.4°C | 10.4°C | 4.4°C | 28.8°C | 0.0°C | 52 mm | 76% | 0.7 m/s | 5.8 |
| 2022 | 18.0°C | 11.7°C | 5.4°C | 24.5°C | -2.9°C | 45 mm | 77% | 0.6 m/s | 6.1 |
| 2021 | 16.8°C | 11.0°C | 5.2°C | 27.4°C | 0.4°C | 55 mm | 76% | 0.6 m/s | 5.5 |
| 2020 | 15.7°C | 10.0°C | 4.4°C | 26.9°C | -0.2°C | 75 mm | 78% | 0.7 m/s | 5.9 |
| 2019 | 13.6°C | 8.5°C | 3.3°C | 21.2°C | -2.0°C | 87 mm | 81% | 0.6 m/s | 4.8 |
| 2018 | 17.4°C | 10.9°C | 4.3°C | 25.8°C | -2.3°C | 82 mm | 77% | 0.7 m/s | 6.4 |
| 2017 | 15.1°C | 10.1°C | 5.1°C | 27.3°C | 1.1°C | 157 mm | 83% | 0.6 m/s | 4.6 |
| 2016 | 16.3°C | 11.0°C | 5.7°C | 25.4°C | 0.9°C | 68 mm | 81% | 0.6 m/s | 5 |
| 2015 | 17.6°C | 11.9°C | 6.2°C | 26.4°C | -1.0°C | 89 mm | 80% | 0.6 m/s | 5.4 |
| 2014 | 14.8°C | 9.7°C | 4.7°C | 20.8°C | 1.0°C | 92 mm | 82% | 0.6 m/s | 4.8 |
| 2013 | 16.4°C | 11.2°C | 5.9°C | 27.5°C | 0.4°C | 123 mm | 83% | 0.6 m/s | 5 |
| 2012 | 16.8°C | 11.7°C | 6.5°C | 25.3°C | 0.2°C | 96 mm | 82% | 0.6 m/s | 4.8 |
| 2011 | 14.9°C | 10.5°C | 6.1°C | 23.4°C | -0.6°C | 149 mm | 86% | 0.7 m/s | 4 |
| 2010 | 17.3°C | 11.9°C | 6.4°C | 26.8°C | 0.6°C | 54 mm | 77% | 0.6 m/s | 5.8 |
| 2009 | 16.1°C | 11.0°C | 5.8°C | 25.1°C | 2.3°C | 90 mm | 81% | 0.6 m/s | 5 |
| 2008 | 15.3°C | 10.0°C | 4.8°C | 23.3°C | -0.3°C | 55 mm | 79% | 0.7 m/s | 5.6 |
| 2007 | 15.6°C | 10.2°C | 4.7°C | 29.2°C | -0.9°C | 83 mm | 80% | 0.6 m/s | 5.2 |
| 2006 | 17.9°C | 12.5°C | 7.1°C | 24.8°C | 1.4°C | 93 mm | 81% | 0.6 m/s | 4.8 |
| 2005 ❄️ | 12.5°C | 8.3°C | 4.1°C | 20.4°C | -1.4°C | 161 mm | 83% | 0.7 m/s | 4 |
| 2004 | 16.2°C | 10.3°C | 4.5°C | 23.9°C | -1.9°C | 51 mm | 78% | 0.7 m/s | 4.9 |
| 2003 | 15.6°C | 10.1°C | 4.5°C | 28.4°C | -3.6°C | 94 mm | 81% | 0.6 m/s | 4.7 |
| 2002 | 15.0°C | 9.7°C | 4.4°C | 23.4°C | -1.5°C | 86 mm | 77% | 0.7 m/s | 5.4 |
| 2001 | 17.8°C | 11.8°C | 5.8°C | 25.5°C | -1.4°C | 100 mm | 80% | 0.6 m/s | 5.6 |
| 2000 | 14.7°C | 9.6°C | 4.6°C | 20.2°C | -1.1°C | 94 mm | 80% | 0.6 m/s | 5.1 |
| 1999 🔥 | 19.6°C | 13.3°C | 7.0°C | 25.5°C | -0.3°C | 50 mm | 78% | 0.6 m/s | 6 |
| 1998 | 19.1°C | 13.1°C | 7.1°C | 26.0°C | 1.2°C | 74 mm | 81% | 0.6 m/s | 5.4 |
| 1997 | 13.9°C | 9.0°C | 4.2°C | 20.6°C | -0.9°C | 104 mm | 81% | 0.7 m/s | 4.8 |
| 1996 | 14.2°C | 9.0°C | 3.8°C | 21.9°C | -2.3°C | 105 mm | 79% | 0.6 m/s | 5 |
| 1995 | 15.5°C | 10.0°C | 4.4°C | 20.3°C | -1.1°C | 81 mm | 80% | 0.6 m/s | 4.8 |
| 1994 | 14.1°C | 9.1°C | 4.1°C | 25.0°C | -1.1°C | 166 mm | 83% | 0.6 m/s | 4.9 |
| 1993 | 15.8°C | 10.6°C | 5.4°C | 21.0°C | -1.2°C | 103 mm | 81% | 0.6 m/s | 4.8 |
| 1992 | 16.5°C | 10.1°C | 3.7°C | 29.2°C | -3.4°C | 35 mm | 77% | 0.6 m/s | 6.1 |
| 1991 | 17.2°C | 11.4°C | 5.5°C | 24.6°C | 0.0°C | 102 mm | 80% | 0.7 m/s | 5.4 |
| 1990 🌧️ | 13.3°C | 8.5°C | 3.6°C | 23.3°C | -1.0°C | 201 mm | 82% | 0.7 m/s | 4.8 |
| 1989 | 18.6°C | 13.2°C | 7.8°C | 24.7°C | 2.1°C | 112 mm | 83% | 0.6 m/s | 4.4 |
| 1988 | 17.0°C | 11.3°C | 5.5°C | 23.9°C | -1.3°C | 91 mm | 80% | 0.7 m/s | 5.1 |
| 1987 | 16.8°C | 10.8°C | 4.8°C | 25.2°C | -3.5°C | 65 mm | 76% | 0.6 m/s | 5.7 |
| 1986 | 16.1°C | 10.3°C | 4.6°C | 25.3°C | -3.3°C | 75 mm | 79% | 0.7 m/s | 5.2 |
| 1985 | 15.1°C | 9.4°C | 3.7°C | 22.5°C | -2.6°C | 150 mm | 80% | 0.6 m/s | 5.5 |
| 1984 | 15.1°C | 10.2°C | 5.3°C | 22.0°C | 0.7°C | 131 mm | 83% | 0.7 m/s | 4.3 |
| 1983 | 14.6°C | 10.1°C | 5.6°C | 20.3°C | -1.4°C | 162 mm | 84% | 0.7 m/s | — |
| 1982 | 15.9°C | 10.1°C | 4.2°C | 24.8°C | -1.2°C | 31 mm | 79% | 0.6 m/s | — |
| 1981 | 16.6°C | 11.3°C | 5.9°C | 23.5°C | -1.0°C | 126 mm | 82% | 0.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 16.1°C with lows near 5.2°C (mean 10.7°C), based on 45 years of NASA POWER data.
May averages 94 mm of rainfall in Oromocto, about average for rainfall. The wettest on record was 201 mm in 1990.
The hottest May reached 29.2°C in 1992. The coldest dipped to -3.6°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1°C. Daytime highs moved from 15.5°C to 17°C and overnight lows from 4.9°C to 5.4°C over the same span.
May is one of the warmer months of the year in Oromocto and about average for rainfall, so plan for around 16.1°C daytime highs and 5.2°C at night.
Not quite — May is the 8th coolest month in Oromocto, averaging 10.7°C.
For May in Oromocto, pack warm layers and a jacket for chilly mornings, with typical highs of 16.1°C and lows of 5.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 80% — quite humid.
Average wind speed in May is 0.6 m/s. The windiest May on record averaged 0.7 m/s (1981).
The wettest May on record was 1990 with 201 mm. On average, May sees 94 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 Oromocto 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.
