May is one of the warmer months of the year in Swift Current, with average highs near 18.5°C and lows around 5.5°C (mean 12°C). It is a relatively wet time of year, averaging 46 mm of rainfall and 56% relative humidity across the period.
May is one of the warmer months of the year in Swift Current. Across 45 years of records, the warmest May in Swift Current was 2018 — when the month averaged 16.3°C — while the coldest were 1996 and 2004 at 8.9°C. Typical May days reach 18.5°C with nights near 5.5°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Swift Current, averaging 46 mm of rainfall. The wettest May on record was 2010 with 111 mm, while the driest was 2015 at 11 mm.
Relative humidity in Swift Current during May averages 56%. The most humid May was 1996 at 65%, and the least humid was 1988 at 43%.
May receives about 5.8 kWh/m²/day of solar energy in Swift Current. The sunniest May was 1998 at 6.5 kWh/m²/day, and the cloudiest was 2010 at 4.9.
Average wind speed in Swift Current during May is 3.7 m/s. The windiest May was 2001 at 4.5 m/s, while the calmest was 1996 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.5°C | 11.6°C | 11.4°C | 12.2°C | 12.8°C | +0.3°C |
| Avg High | 19.1°C | 18.1°C | 17.9°C | 18.6°C | 19.2°C | +0.1°C |
| Avg Low | 5.9°C | 5.1°C | 4.8°C | 5.8°C | 6.3°C | +0.4°C |
| Avg Rain | 51 mm | 50 mm | 44 mm | 47 mm | 37 mm | -15 mm |
May temperatures in Swift Current have risen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -8.7°C (1983) to a record high of 33.9°C (1986).
Rainfall in May is a relatively wet time of year, averaging 46 mm, with a wettest year of 111 mm.
A good time to visit Swift Current
May is a good time to visit Swift Current, with days averaging 18.5°C and nights around 5.5°C (mean 12°C, warmer than Swift Current'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 | 21.1°C | 14.3°C | 7.5°C | 30.8°C | 2.4°C | 22 mm | 54% | 3.9 m/s | 6 |
| 2024 | 16.8°C | 11.2°C | 5.5°C | 26.8°C | -1.2°C | 67 mm | 64% | 3.5 m/s | 5.3 |
| 2023 | 23.1°C | 16.0°C | 9.0°C | 31.3°C | 1.5°C | 34 mm | 56% | 3.2 m/s | 5.6 |
| 2022 | 18.2°C | 12.0°C | 5.8°C | 26.8°C | 0.0°C | 27 mm | 53% | 3.6 m/s | 5.6 |
| 2021 | 17.2°C | 11.0°C | 4.7°C | 30.7°C | -2.4°C | 40 mm | 53% | 3.7 m/s | 5.6 |
| 2020 | 18.9°C | 12.1°C | 5.3°C | 31.4°C | -2.2°C | 30 mm | 56% | 4 m/s | 6.2 |
| 2019 | 17.2°C | 10.5°C | 3.7°C | 30.3°C | -4.9°C | 14 mm | 51% | 3.2 m/s | 6.3 |
| 2018 🔥 | 23.3°C | 16.3°C | 9.3°C | 31.2°C | 1.5°C | 26 mm | 51% | 3.3 m/s | 6.2 |
| 2017 | 20.6°C | 13.7°C | 6.8°C | 30.9°C | 0.4°C | 21 mm | 52% | 3.8 m/s | 6.4 |
| 2016 | 20.0°C | 13.7°C | 7.4°C | 29.8°C | -3.1°C | 80 mm | 56% | 3.6 m/s | 5.9 |
| 2015 | 18.4°C | 11.3°C | 4.2°C | 27.1°C | -2.7°C | 11 mm | 50% | 3.3 m/s | 6.2 |
| 2014 | 17.9°C | 11.5°C | 5.1°C | 29.7°C | -5.1°C | 35 mm | 56% | 3.4 m/s | 5.9 |
| 2013 | 20.0°C | 13.5°C | 6.9°C | 30.0°C | -5.8°C | 18 mm | 51% | 3.5 m/s | 6 |
| 2012 | 17.0°C | 11.2°C | 5.5°C | 29.2°C | -0.3°C | 91 mm | 60% | 3.7 m/s | 5.4 |
| 2011 | 16.3°C | 10.5°C | 4.7°C | 22.8°C | -1.3°C | 62 mm | 63% | 3.6 m/s | 5.4 |
| 2010 🌧️ | 15.0°C | 9.5°C | 4.0°C | 28.2°C | -2.4°C | 111 mm | 61% | 4 m/s | 4.9 |
| 2009 | 17.7°C | 10.8°C | 3.9°C | 31.5°C | -2.2°C | 34 mm | 52% | 3.7 m/s | 6 |
| 2008 | 18.0°C | 11.7°C | 5.3°C | 25.9°C | -2.8°C | 32 mm | 55% | 3.8 m/s | 5.7 |
| 2007 | 19.3°C | 12.6°C | 5.9°C | 27.9°C | 1.7°C | 58 mm | 61% | 4 m/s | 5.5 |
| 2006 | 19.2°C | 13.0°C | 6.8°C | 31.9°C | -2.8°C | 55 mm | 62% | 3.8 m/s | 5.6 |
| 2005 | 17.1°C | 10.7°C | 4.3°C | 23.6°C | -5.2°C | 38 mm | 58% | 4.2 m/s | 5.7 |
| 2004 | 14.9°C | 8.9°C | 2.8°C | 24.5°C | -4.9°C | 96 mm | 63% | 3.8 m/s | 5.2 |
| 2003 | 18.4°C | 12.1°C | 5.8°C | 27.7°C | -2.0°C | 36 mm | 58% | 3.7 m/s | 6.1 |
| 2002 | 16.7°C | 9.5°C | 2.3°C | 28.7°C | -6.1°C | 22 mm | 47% | 4.4 m/s | 6.3 |
| 2001 | 19.8°C | 13.0°C | 6.2°C | 29.2°C | 0.1°C | 31 mm | 47% | 4.5 m/s | 6.3 |
| 2000 | 18.2°C | 11.7°C | 5.1°C | 27.5°C | -2.1°C | 41 mm | 54% | 3.6 m/s | 5.8 |
| 1999 | 16.7°C | 11.1°C | 5.6°C | 28.4°C | -1.0°C | 97 mm | 61% | 4.1 m/s | 5.2 |
| 1998 | 20.8°C | 13.7°C | 6.6°C | 27.3°C | -0.3°C | 32 mm | 51% | 3.5 m/s | 6.5 |
| 1997 | 17.7°C | 10.9°C | 4.2°C | 28.0°C | -2.8°C | 36 mm | 56% | 3.9 m/s | 5.8 |
| 1996 ❄️ | 14.7°C | 8.9°C | 3.0°C | 21.8°C | -5.0°C | 49 mm | 65% | 2.8 m/s | 5 |
| 1995 | 17.3°C | 10.5°C | 3.7°C | 29.6°C | -3.2°C | 37 mm | 57% | 3 m/s | 5.9 |
| 1994 | 19.5°C | 12.9°C | 6.3°C | 28.2°C | 0.2°C | 53 mm | 57% | 3.4 m/s | 5.6 |
| 1993 | 20.0°C | 12.9°C | 5.7°C | 29.0°C | 1.4°C | 19 mm | 50% | 3.4 m/s | 6.2 |
| 1992 | 18.6°C | 11.9°C | 5.2°C | 30.7°C | -0.8°C | 45 mm | 56% | 3.8 m/s | 5.5 |
| 1991 | 18.4°C | 12.1°C | 5.7°C | 27.9°C | -4.3°C | 71 mm | 59% | 3.4 m/s | 5.8 |
| 1990 | 16.8°C | 10.7°C | 4.6°C | 26.1°C | -3.2°C | 56 mm | 61% | 3.6 m/s | 5.5 |
| 1989 | 18.4°C | 11.7°C | 5.1°C | 28.0°C | -3.7°C | 77 mm | 55% | 3.6 m/s | 5.7 |
| 1988 | 23.2°C | 15.9°C | 8.6°C | 33.9°C | 1.5°C | 29 mm | 43% | 3.9 m/s | 5.5 |
| 1987 | 21.5°C | 14.8°C | 8.1°C | 28.7°C | 0.2°C | 40 mm | 52% | 3.6 m/s | 6 |
| 1986 | 18.9°C | 12.2°C | 5.6°C | 33.9°C | -2.7°C | 100 mm | 61% | 3.9 m/s | 5.8 |
| 1985 | 20.8°C | 14.2°C | 7.5°C | 29.8°C | 1.7°C | 38 mm | 53% | 3.5 m/s | 6 |
| 1984 | 17.8°C | 11.1°C | 4.4°C | 33.1°C | -3.5°C | 15 mm | 48% | 4.2 m/s | 5.6 |
| 1983 | 16.0°C | 9.6°C | 3.2°C | 28.9°C | -8.7°C | 51 mm | 62% | 3.6 m/s | — |
| 1982 | 15.7°C | 9.8°C | 3.9°C | 27.0°C | -4.2°C | 87 mm | 64% | 4 m/s | — |
| 1981 | 19.5°C | 12.9°C | 6.3°C | 26.8°C | -1.2°C | 26 mm | 53% | 4.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 18.5°C with lows near 5.5°C (mean 12°C), based on 45 years of NASA POWER data.
May averages 46 mm of rainfall in Swift Current, a relatively wet time of year. The wettest on record was 111 mm in 2010.
The hottest May reached 33.9°C in 1986. The coldest dipped to -8.7°C in 1983.
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 18°C to 19.3°C and overnight lows from 5.1°C to 6.5°C over the same span.
May is one of the warmer months of the year in Swift Current and a relatively wet time of year, so plan for around 18.5°C daytime highs and 5.5°C at night.
Not quite — May is the 8th coolest month in Swift Current, averaging 12°C.
For May in Swift Current, pack warm layers and a jacket for chilly mornings, with typical highs of 18.5°C and lows of 5.5°C.
Relative humidity in May averages 56% — moderately humid.
Average wind speed in May is 3.7 m/s. The windiest May on record averaged 4.5 m/s (2001).
The wettest May on record was 2010 with 111 mm. On average, May sees 46 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 Swift Current 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.
