May is one of the warmer months of the year in New Glasgow, with average highs near 14.6°C and lows around 3.7°C (mean 9.2°C). It is one of the drier months, averaging 62 mm of rainfall and 81% relative humidity across the period.
May is one of the warmer months of the year in New Glasgow. Across 45 years of records, the warmest May in New Glasgow was 1989 — when the month averaged 13.1°C — while the coldest was 2019 at 6.4°C. Typical May days reach 14.6°C with nights near 3.7°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in New Glasgow, averaging 62 mm of rainfall. The wettest May on record was 2008 with 136 mm, while the driest was 1992 at 25 mm.
Relative humidity in New Glasgow during May averages 81%. The most humid May was 2011 at 88%, and the least humid was 1987 at 72%.
May receives about 5.1 kWh/m²/day of solar energy in New Glasgow. The sunniest May was 1999 at 6.3 kWh/m²/day, and the cloudiest was 2011 at 3.7.
Average wind speed in New Glasgow during May is 0.3 m/s. The windiest Mays were 2022, 2023 and 2025, among others at 0.4 m/s, while the calmest were 2017, 2018 and 2024, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.8°C | 9.1°C | 8.5°C | 9.1°C | 9.1°C | -0.7°C |
| Avg High | 15.4°C | 14.8°C | 13.8°C | 14.3°C | 14.6°C | -0.8°C |
| Avg Low | 4.2°C | 3.4°C | 3.2°C | 4.0°C | 3.7°C | -0.5°C |
| Avg Rain | 67 mm | 46 mm | 73 mm | 70 mm | 51 mm | -15 mm |
May temperatures in New Glasgow have stayed relatively stable across the record.
May has ranged from a record low of -4.6°C (2022) to a record high of 28°C (1992).
Rainfall in May is one of the drier months, averaging 62 mm, with a wettest year of 136 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A good time to visit New Glasgow
May is a good time to visit New Glasgow, with days averaging 14.6°C and nights around 3.7°C (mean 9.2°C, warmer than New Glasgow's yearly average) and moderate 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 | 15.0°C | 9.6°C | 4.3°C | 25.0°C | -1.8°C | 60 mm | 81% | 0.4 m/s | 4.7 |
| 2024 | 15.4°C | 10.3°C | 5.3°C | 24.7°C | 0.9°C | 60 mm | 84% | 0.3 m/s | 5.3 |
| 2023 | 13.2°C | 7.9°C | 2.6°C | 27.4°C | -2.3°C | 55 mm | 80% | 0.4 m/s | 5.4 |
| 2022 | 15.2°C | 9.2°C | 3.2°C | 22.8°C | -4.6°C | 30 mm | 79% | 0.4 m/s | 6 |
| 2021 | 14.4°C | 8.9°C | 3.5°C | 25.7°C | -0.4°C | 69 mm | 81% | 0.4 m/s | 5.1 |
| 2020 | 14.1°C | 8.6°C | 3.0°C | 26.0°C | -1.9°C | 36 mm | 78% | 0.4 m/s | 5.4 |
| 2019 ❄️ | 10.6°C | 6.4°C | 2.1°C | 18.5°C | -2.3°C | 87 mm | 84% | 0.4 m/s | 4.6 |
| 2018 | 15.4°C | 9.0°C | 2.6°C | 22.9°C | -2.3°C | 80 mm | 78% | 0.3 m/s | 6 |
| 2017 | 13.5°C | 8.7°C | 4.0°C | 26.1°C | 0.2°C | 100 mm | 84% | 0.3 m/s | 4.9 |
| 2016 | 15.1°C | 9.8°C | 4.6°C | 24.8°C | -1.8°C | 63 mm | 82% | 0.3 m/s | 4.8 |
| 2015 | 16.0°C | 9.9°C | 3.9°C | 25.4°C | -2.1°C | 54 mm | 80% | 0.3 m/s | 5.6 |
| 2014 | 13.3°C | 8.0°C | 2.6°C | 22.4°C | -3.3°C | 51 mm | 83% | 0.3 m/s | 5.2 |
| 2013 | 15.0°C | 9.9°C | 4.7°C | 24.9°C | -1.7°C | 65 mm | 85% | 0.4 m/s | 5 |
| 2012 | 16.0°C | 10.6°C | 5.1°C | 21.8°C | -2.9°C | 53 mm | 81% | 0.3 m/s | 5.2 |
| 2011 | 14.0°C | 9.8°C | 5.5°C | 23.5°C | -0.7°C | 92 mm | 88% | 0.3 m/s | 3.7 |
| 2010 | 13.8°C | 9.1°C | 4.4°C | 24.9°C | 0.0°C | 53 mm | 82% | 0.4 m/s | 5.3 |
| 2009 | 15.3°C | 9.8°C | 4.4°C | 23.5°C | -1.3°C | 83 mm | 83% | 0.3 m/s | 4.8 |
| 2008 🌧️ | 12.5°C | 7.8°C | 3.1°C | 18.7°C | -0.2°C | 136 mm | 85% | 0.4 m/s | 4.8 |
| 2007 | 12.5°C | 7.5°C | 2.5°C | 23.6°C | -3.3°C | 73 mm | 82% | 0.4 m/s | 4.8 |
| 2006 | 16.5°C | 10.5°C | 4.5°C | 22.4°C | -0.6°C | 62 mm | 81% | 0.3 m/s | 5.2 |
| 2005 | 12.0°C | 7.7°C | 3.4°C | 20.2°C | -1.2°C | 114 mm | 84% | 0.4 m/s | 4.1 |
| 2004 | 13.9°C | 8.2°C | 2.5°C | 23.6°C | -1.6°C | 30 mm | 78% | 0.4 m/s | 4.6 |
| 2003 | 13.6°C | 8.1°C | 2.7°C | 22.6°C | -2.7°C | 60 mm | 82% | 0.3 m/s | 4.8 |
| 2002 | 14.3°C | 8.7°C | 3.0°C | 22.6°C | -2.9°C | 30 mm | 77% | 0.4 m/s | 5.8 |
| 2001 | 14.8°C | 9.3°C | 3.7°C | 22.6°C | -4.5°C | 87 mm | 82% | 0.3 m/s | 5.5 |
| 2000 | 12.7°C | 7.6°C | 2.6°C | 19.9°C | -2.3°C | 52 mm | 80% | 0.3 m/s | 4.8 |
| 1999 | 18.2°C | 11.8°C | 5.5°C | 27.5°C | -1.3°C | 42 mm | 78% | 0.3 m/s | 6.3 |
| 1998 | 17.3°C | 11.5°C | 5.6°C | 24.0°C | -1.1°C | 76 mm | 81% | 0.3 m/s | 5.6 |
| 1997 | 12.9°C | 7.9°C | 2.9°C | 18.3°C | -2.2°C | 71 mm | 80% | 0.4 m/s | 4.9 |
| 1996 | 13.1°C | 8.0°C | 2.8°C | 21.0°C | -4.2°C | 36 mm | 75% | 0.4 m/s | 4.5 |
| 1995 | 13.5°C | 7.9°C | 2.4°C | 20.3°C | -2.2°C | 28 mm | 76% | 0.3 m/s | 5 |
| 1994 | 13.7°C | 8.4°C | 3.1°C | 23.8°C | -1.6°C | 58 mm | 80% | 0.4 m/s | 4.7 |
| 1993 | 15.0°C | 9.3°C | 3.6°C | 23.4°C | -3.9°C | 28 mm | 79% | 0.3 m/s | 4.4 |
| 1992 | 15.6°C | 8.8°C | 2.0°C | 28.0°C | -3.0°C | 25 mm | 76% | 0.3 m/s | 5.4 |
| 1991 | 15.2°C | 9.1°C | 2.9°C | 25.1°C | -4.0°C | 35 mm | 72% | 0.4 m/s | 5.4 |
| 1990 | 13.3°C | 8.0°C | 2.8°C | 23.7°C | -1.4°C | 64 mm | 77% | 0.4 m/s | 4.4 |
| 1989 🔥 | 19.1°C | 13.1°C | 7.1°C | 25.4°C | 2.4°C | 59 mm | 79% | 0.3 m/s | 5 |
| 1988 | 17.1°C | 11.1°C | 5.1°C | 25.4°C | -2.9°C | 33 mm | 78% | 0.3 m/s | 5.2 |
| 1987 | 15.9°C | 9.3°C | 2.7°C | 23.8°C | -2.3°C | 26 mm | 72% | 0.3 m/s | 5.9 |
| 1986 | 15.3°C | 9.2°C | 3.1°C | 25.2°C | -4.4°C | 33 mm | 79% | 0.3 m/s | 5.4 |
| 1985 | 13.6°C | 8.1°C | 2.5°C | 23.7°C | -3.1°C | 70 mm | 82% | 0.3 m/s | 5.2 |
| 1984 | 14.3°C | 9.4°C | 4.6°C | 20.2°C | -0.9°C | 86 mm | 85% | 0.3 m/s | 4.2 |
| 1983 | 14.6°C | 9.7°C | 4.8°C | 18.4°C | -0.1°C | 117 mm | 84% | 0.3 m/s | — |
| 1982 | 13.4°C | 8.2°C | 3.0°C | 22.9°C | -2.1°C | 66 mm | 83% | 0.3 m/s | — |
| 1981 | 15.6°C | 10.3°C | 5.0°C | 23.5°C | -1.8°C | 109 mm | 85% | 0.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 14.6°C with lows near 3.7°C (mean 9.2°C), based on 45 years of NASA POWER data.
May averages 62 mm of rainfall in New Glasgow, one of the drier months. The wettest on record was 136 mm in 2008.
The hottest May reached 28°C in 1992. The coldest dipped to -4.6°C in 2022.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Daytime highs rose from 14.3°C to 14.6°C while overnight lows fell from 4°C to 3.8°C, widening the gap between day and night.
May is one of the warmer months of the year in New Glasgow and one of the drier months, so plan for around 14.6°C daytime highs and 3.7°C at night.
Not quite — May is the 8th coolest month in New Glasgow, averaging 9.2°C.
For May in New Glasgow, pack warm layers and a jacket for chilly mornings, with typical highs of 14.6°C and lows of 3.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 81% — quite humid.
Average wind speed in May is 0.3 m/s. The windiest May on record averaged 0.4 m/s (1990).
The wettest May on record was 2008 with 136 mm. On average, May sees 62 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 New Glasgow 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.
