May is one of the warmer months of the year in Terrace, with average highs near 8.9°C and lows around 0.9°C (mean 4.9°C). It is one of the drier months, averaging 90 mm of rainfall and 82% relative humidity across the period.
May is one of the warmer months of the year in Terrace. Across 45 years of records, the warmest Mays in Terrace were 1993 and 2015 — when the month averaged 8.7°C — while the coldest was 1982 at 0.4°C. Typical May days reach 8.9°C with nights near 0.9°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Terrace, averaging 90 mm of rainfall. The wettest May on record was 2001 with 189 mm, while the driest was 2015 at 36 mm.
Relative humidity in Terrace during May averages 82%. The most humid May was 1982 at 91%, and the least humid was 2004 at 76%.
May receives about 4.6 kWh/m²/day of solar energy in Terrace. The sunniest May was 2023 at 5.4 kWh/m²/day, and the cloudiest was 2001 at 3.5.
Average wind speed in Terrace during May is 0.5 m/s. The windiest Mays were 2019, 2024 and 2025, among others at 0.5 m/s, while the calmest were 2021, 2022 and 2023, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.0°C | 5.5°C | 4.1°C | 5.9°C | 5.2°C | +1.2°C |
| Avg High | 7.8°C | 9.8°C | 8.0°C | 9.9°C | 9.1°C | +1.3°C |
| Avg Low | 0.2°C | 1.2°C | 0.3°C | 1.8°C | 1.3°C | +1.1°C |
| Avg Rain | 102 mm | 88 mm | 93 mm | 85 mm | 83 mm | -18 mm |
May temperatures in Terrace have risen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -13.3°C (2002) to a record high of 29.5°C (1983).
Rainfall in May is one of the drier months, averaging 90 mm, with a wettest year of 189 mm.
A good time to visit Terrace
May is a good time to visit Terrace, with days averaging 8.9°C and nights around 0.9°C (mean 4.9°C, warmer than Terrace'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 | 7.8°C | 4.3°C | 0.7°C | 13.4°C | -1.5°C | 131 mm | 86% | 0.5 m/s | 4 |
| 2024 | 8.4°C | 4.5°C | 0.7°C | 14.0°C | -1.4°C | 77 mm | 83% | 0.5 m/s | 4.4 |
| 2023 | 12.9°C | 8.2°C | 3.4°C | 23.4°C | -0.1°C | 46 mm | 80% | 0.4 m/s | 5.4 |
| 2022 | 7.4°C | 3.8°C | 0.2°C | 15.9°C | -3.0°C | 104 mm | 81% | 0.4 m/s | 4.6 |
| 2021 | 7.8°C | 4.3°C | 0.9°C | 12.3°C | -2.4°C | 81 mm | 84% | 0.4 m/s | 4.5 |
| 2020 | 10.1°C | 6.0°C | 1.8°C | 15.9°C | -2.5°C | 60 mm | 80% | 0.4 m/s | 5 |
| 2019 | 13.5°C | 8.6°C | 3.7°C | 22.9°C | -0.9°C | 41 mm | 77% | 0.5 m/s | 5.1 |
| 2018 | 10.6°C | 6.4°C | 2.1°C | 18.0°C | -2.0°C | 90 mm | 82% | 0.4 m/s | 4.4 |
| 2017 | 9.0°C | 5.2°C | 1.5°C | 19.1°C | -4.7°C | 133 mm | 84% | 0.4 m/s | 4.4 |
| 2016 | 11.3°C | 6.8°C | 2.3°C | 18.0°C | -1.8°C | 69 mm | 79% | 0.5 m/s | 4.7 |
| 2015 | 13.5°C | 8.7°C | 3.9°C | 19.0°C | -2.5°C | 36 mm | 78% | 0.5 m/s | 5.3 |
| 2014 | 10.1°C | 6.1°C | 2.2°C | 16.2°C | -4.6°C | 98 mm | 82% | 0.4 m/s | 4.6 |
| 2013 | 10.2°C | 6.1°C | 1.9°C | 16.5°C | -4.6°C | 103 mm | 81% | 0.4 m/s | 4.3 |
| 2012 | 4.9°C | 1.9°C | -1.0°C | 14.7°C | -5.3°C | 93 mm | 87% | 0.5 m/s | 4.2 |
| 2011 | 6.6°C | 3.4°C | 0.1°C | 16.6°C | -4.6°C | 116 mm | 87% | 0.5 m/s | 4.3 |
| 2010 | 9.5°C | 5.3°C | 1.1°C | 16.0°C | -4.6°C | 74 mm | 79% | 0.5 m/s | 4.8 |
| 2009 | 7.8°C | 3.7°C | -0.5°C | 14.4°C | -3.4°C | 102 mm | 82% | 0.4 m/s | 4.5 |
| 2008 | 6.5°C | 3.4°C | 0.3°C | 17.7°C | -5.4°C | 86 mm | 89% | 0.5 m/s | 4.5 |
| 2007 | 6.0°C | 2.9°C | -0.2°C | 13.7°C | -4.5°C | 58 mm | 84% | 0.4 m/s | 4.6 |
| 2006 | 9.1°C | 4.9°C | 0.8°C | 16.3°C | -3.4°C | 87 mm | 80% | 0.4 m/s | 4.6 |
| 2005 | 12.1°C | 7.3°C | 2.5°C | 20.2°C | -2.3°C | 65 mm | 78% | 0.5 m/s | 5.1 |
| 2004 | 11.4°C | 6.6°C | 1.9°C | 18.9°C | -2.1°C | 52 mm | 76% | 0.5 m/s | 5.2 |
| 2003 | 8.7°C | 4.4°C | 0.2°C | 15.9°C | -5.4°C | 92 mm | 78% | 0.5 m/s | 4.7 |
| 2002 | 5.9°C | 2.3°C | -1.3°C | 13.1°C | -13.3°C | 104 mm | 88% | 0.5 m/s | 4 |
| 2001 🌧️ | 5.5°C | 2.3°C | -0.8°C | 11.3°C | -4.0°C | 189 mm | 87% | 0.5 m/s | 3.5 |
| 2000 | 7.1°C | 3.5°C | -0.2°C | 13.9°C | -2.9°C | 91 mm | 80% | 0.4 m/s | 4.6 |
| 1999 | 4.3°C | 1.4°C | -1.5°C | 10.0°C | -5.3°C | 142 mm | 89% | 0.5 m/s | 4.6 |
| 1998 | 12.6°C | 7.7°C | 2.8°C | 22.5°C | -1.8°C | 54 mm | 80% | 0.5 m/s | 4.9 |
| 1997 | 10.3°C | 5.6°C | 1.0°C | 16.1°C | -5.1°C | 71 mm | 78% | 0.5 m/s | 5.1 |
| 1996 | 8.0°C | 3.8°C | -0.5°C | 14.5°C | -6.7°C | 70 mm | 77% | 0.5 m/s | 5 |
| 1995 | 11.7°C | 7.0°C | 2.3°C | 19.2°C | -2.9°C | 60 mm | 76% | 0.5 m/s | 4.9 |
| 1994 | 9.6°C | 5.4°C | 1.2°C | 18.3°C | -2.7°C | 109 mm | 80% | 0.5 m/s | 4.2 |
| 1993 🔥 | 13.6°C | 8.7°C | 3.8°C | 23.3°C | -2.0°C | 101 mm | 79% | 0.5 m/s | 4.6 |
| 1992 | 8.3°C | 4.2°C | 0.2°C | 15.4°C | -4.2°C | 122 mm | 80% | 0.5 m/s | 4.8 |
| 1991 | 9.5°C | 5.2°C | 0.9°C | 14.5°C | -1.3°C | 63 mm | 79% | 0.5 m/s | 4.3 |
| 1990 | 10.4°C | 6.1°C | 1.7°C | 14.5°C | -1.9°C | 82 mm | 81% | 0.4 m/s | 4 |
| 1989 | 9.6°C | 5.6°C | 1.6°C | 19.0°C | -1.7°C | 62 mm | 81% | 0.4 m/s | 4.1 |
| 1988 | 8.7°C | 4.8°C | 0.9°C | 16.6°C | -3.7°C | 131 mm | 82% | 0.4 m/s | 4.2 |
| 1987 | 7.9°C | 4.2°C | 0.5°C | 14.8°C | -2.5°C | 114 mm | 82% | 0.5 m/s | 4.8 |
| 1986 | 7.4°C | 3.4°C | -0.6°C | 13.1°C | -6.2°C | 114 mm | 82% | 0.4 m/s | 4.6 |
| 1985 | 5.6°C | 2.3°C | -0.9°C | 13.9°C | -8.4°C | 97 mm | 87% | 0.5 m/s | 4.6 |
| 1984 | 7.0°C | 3.3°C | -0.5°C | 11.1°C | -2.4°C | 98 mm | 81% | 0.4 m/s | 4.3 |
| 1983 | 10.4°C | 6.2°C | 2.0°C | 29.5°C | -1.1°C | 98 mm | 81% | 0.4 m/s | — |
| 1982 ❄️ | 3.2°C | 0.4°C | -2.4°C | 13.9°C | -7.7°C | 103 mm | 91% | 0.5 m/s | — |
| 1981 | 10.1°C | 5.8°C | 1.4°C | 15.1°C | -1.9°C | 98 mm | 80% | 0.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 8.9°C with lows near 0.9°C (mean 4.9°C), based on 45 years of NASA POWER data.
May averages 90 mm of rainfall in Terrace, one of the drier months. The wettest on record was 189 mm in 2001.
The hottest May reached 29.5°C in 1983. The coldest dipped to -13.3°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 7.3°C to 8.9°C and overnight lows from -0.1°C to 1.2°C over the same span.
May is one of the warmer months of the year in Terrace and one of the drier months, so plan for around 8.9°C daytime highs and 0.9°C at night.
Not quite — May is the 8th coolest month in Terrace, averaging 4.9°C.
For May in Terrace, pack warm layers and a jacket for chilly mornings, with typical highs of 8.9°C and lows of 0.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 82% — quite humid.
Average wind speed in May is 0.5 m/s. The windiest May on record averaged 0.5 m/s (1982).
The wettest May on record was 2001 with 189 mm. On average, May sees 90 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 Terrace 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.
