May is one of the warmer months of the year in Winkler, with average highs near 19°C and lows around 5.7°C (mean 12.4°C). It is a relatively wet time of year, averaging 75 mm of rainfall and 62% relative humidity across the period.
May is one of the warmer months of the year in Winkler. Across 45 years of records, the warmest May in Winkler was 2023 — when the month averaged 16.1°C — while the coldest was 2004 at 8.6°C. Typical May days reach 19°C with nights near 5.7°C. The long-term May temperature trend is broadly flat.
May is a relatively wet time of year in Winkler, averaging 75 mm of rainfall. The wettest May on record was 2022 with 199 mm, while the driest was 1984 at 22 mm.
Relative humidity in Winkler during May averages 62%. The most humid May was 2022 at 75%, and the least humid was 1989 at 53%.
May receives about 5.6 kWh/m²/day of solar energy in Winkler. The sunniest May was 2025 at 6.5 kWh/m²/day, and the cloudiest was 2022 at 4.8.
Average wind speed in Winkler during May is 3.7 m/s. The windiest May was 1999 at 4.3 m/s, while the calmest was 1996 at 3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.1°C | 12.2°C | 11.4°C | 12.4°C | 13.0°C | -0.1°C |
| Avg High | 20.1°C | 19.0°C | 17.9°C | 18.7°C | 19.5°C | -0.6°C |
| Avg Low | 6.0°C | 5.4°C | 4.9°C | 6.1°C | 6.5°C | +0.5°C |
| Avg Rain | 51 mm | 71 mm | 81 mm | 90 mm | 86 mm | +35 mm |
May temperatures in Winkler have risen by about 1.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -6.5°C (1983) to a record high of 35.3°C (2025).
Rainfall in May is a relatively wet time of year, averaging 75 mm, with a wettest year of 199 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Winkler
May is a good time to visit Winkler, with days averaging 19°C and nights around 5.7°C (mean 12.4°C, warmer than Winkler'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 | 22.6°C | 15.1°C | 7.6°C | 35.3°C | -1.8°C | 52 mm | 55% | 3.6 m/s | 6.5 |
| 2024 | 17.7°C | 11.9°C | 6.2°C | 26.5°C | 1.3°C | 157 mm | 70% | 3.6 m/s | 4.9 |
| 2023 🔥 | 22.8°C | 16.1°C | 9.4°C | 30.7°C | -1.1°C | 33 mm | 65% | 3.5 m/s | 5.9 |
| 2022 🌧️ | 16.6°C | 10.8°C | 5.0°C | 25.1°C | -2.4°C | 199 mm | 75% | 4 m/s | 4.8 |
| 2021 | 19.5°C | 12.3°C | 5.2°C | 29.6°C | -2.1°C | 46 mm | 55% | 3.6 m/s | 6 |
| 2020 | 17.6°C | 11.5°C | 5.3°C | 26.1°C | -4.5°C | 27 mm | 63% | 3.7 m/s | 6.2 |
| 2019 | 17.0°C | 10.4°C | 3.9°C | 30.6°C | -3.2°C | 39 mm | 58% | 3.4 m/s | 6.1 |
| 2018 | 23.5°C | 16.0°C | 8.4°C | 31.7°C | -1.8°C | 55 mm | 56% | 3.3 m/s | 6.2 |
| 2017 | 18.5°C | 12.3°C | 6.1°C | 24.3°C | 0.5°C | 37 mm | 61% | 3.8 m/s | 5.8 |
| 2016 | 20.7°C | 14.1°C | 7.6°C | 32.5°C | -2.4°C | 94 mm | 59% | 3.6 m/s | 5.7 |
| 2015 | 17.9°C | 11.4°C | 4.9°C | 28.4°C | -2.0°C | 109 mm | 63% | 3.6 m/s | 5.6 |
| 2014 | 17.6°C | 11.5°C | 5.5°C | 29.8°C | -3.4°C | 74 mm | 69% | 3.4 m/s | 5.1 |
| 2013 | 18.0°C | 11.6°C | 5.3°C | 28.7°C | -5.0°C | 165 mm | 66% | 4 m/s | 5.3 |
| 2012 | 20.0°C | 13.6°C | 7.2°C | 30.8°C | 2.4°C | 78 mm | 62% | 3.8 m/s | 5.5 |
| 2011 | 16.2°C | 10.8°C | 5.4°C | 23.2°C | -4.0°C | 90 mm | 70% | 3.9 m/s | 5.1 |
| 2010 | 17.8°C | 12.3°C | 6.8°C | 28.0°C | -1.7°C | 155 mm | 68% | 3.7 m/s | 5.1 |
| 2009 | 15.7°C | 9.2°C | 2.6°C | 23.5°C | -3.7°C | 84 mm | 67% | 3.8 m/s | 5.6 |
| 2008 | 17.1°C | 10.3°C | 3.5°C | 23.7°C | -3.2°C | 38 mm | 58% | 3.5 m/s | 6.2 |
| 2007 | 20.0°C | 13.2°C | 6.4°C | 29.6°C | 0.1°C | 134 mm | 67% | 4.2 m/s | 5 |
| 2006 | 20.0°C | 13.5°C | 6.9°C | 31.3°C | -2.7°C | 54 mm | 66% | 3.7 m/s | 5.3 |
| 2005 | 17.3°C | 11.4°C | 5.5°C | 28.1°C | -5.5°C | 80 mm | 66% | 4 m/s | 4.9 |
| 2004 ❄️ | 14.5°C | 8.6°C | 2.7°C | 23.6°C | -6.5°C | 186 mm | 67% | 3.8 m/s | 4.9 |
| 2003 | 20.0°C | 13.3°C | 6.6°C | 28.3°C | -0.6°C | 85 mm | 57% | 3.8 m/s | 5.7 |
| 2002 | 15.9°C | 9.0°C | 2.0°C | 29.7°C | -5.3°C | 39 mm | 55% | 4.1 m/s | 6.1 |
| 2001 | 19.3°C | 13.2°C | 7.1°C | 27.1°C | 1.1°C | 69 mm | 64% | 4 m/s | 5.4 |
| 2000 | 19.4°C | 12.7°C | 5.9°C | 30.0°C | -1.7°C | 45 mm | 57% | 3.5 m/s | 5.4 |
| 1999 | 17.9°C | 12.1°C | 6.2°C | 28.8°C | -0.6°C | 137 mm | 69% | 4.3 m/s | 5 |
| 1998 | 20.8°C | 14.2°C | 7.6°C | 26.9°C | 1.8°C | 90 mm | 63% | 3.3 m/s | 6.1 |
| 1997 | 16.8°C | 9.8°C | 2.8°C | 28.2°C | -4.7°C | 48 mm | 62% | 3.7 m/s | 6 |
| 1996 | 16.9°C | 10.3°C | 3.7°C | 24.1°C | -4.6°C | 72 mm | 64% | 3 m/s | 5.7 |
| 1995 | 17.4°C | 10.8°C | 4.2°C | 28.8°C | -0.6°C | 54 mm | 66% | 3.2 m/s | 5.6 |
| 1994 | 21.0°C | 13.5°C | 6.1°C | 29.5°C | -2.8°C | 62 mm | 60% | 3.7 m/s | 6.1 |
| 1993 | 19.2°C | 12.2°C | 5.2°C | 29.6°C | -1.0°C | 73 mm | 57% | 3.3 m/s | 5.5 |
| 1992 | 20.4°C | 12.9°C | 5.4°C | 30.9°C | -1.3°C | 68 mm | 61% | 3.8 m/s | 5.8 |
| 1991 | 20.9°C | 14.7°C | 8.4°C | 31.3°C | -2.9°C | 83 mm | 65% | 3.6 m/s | 5.3 |
| 1990 | 18.6°C | 11.4°C | 4.1°C | 27.1°C | -5.6°C | 24 mm | 56% | 3.4 m/s | 6.2 |
| 1989 | 21.4°C | 13.9°C | 6.4°C | 29.7°C | -5.6°C | 46 mm | 53% | 3.7 m/s | 6 |
| 1988 | 22.7°C | 15.4°C | 8.2°C | 31.6°C | -1.5°C | 48 mm | 58% | 4 m/s | 5.7 |
| 1987 | 22.6°C | 15.2°C | 7.7°C | 33.1°C | -0.5°C | 55 mm | 59% | 3.8 m/s | 5.9 |
| 1986 | 20.9°C | 13.7°C | 6.6°C | 32.7°C | -4.0°C | 38 mm | 63% | 3.7 m/s | 6 |
| 1985 | 21.4°C | 14.4°C | 7.5°C | 30.5°C | 2.0°C | 66 mm | 59% | 3.7 m/s | 5.6 |
| 1984 | 17.9°C | 10.7°C | 3.5°C | 32.5°C | -5.5°C | 22 mm | 57% | 3.8 m/s | 5.9 |
| 1983 | 16.6°C | 9.3°C | 2.0°C | 24.5°C | -6.5°C | 31 mm | 60% | 4 m/s | — |
| 1982 | 18.8°C | 13.0°C | 7.1°C | 28.1°C | -3.0°C | 84 mm | 68% | 3.6 m/s | — |
| 1981 | 18.8°C | 12.0°C | 5.2°C | 29.6°C | -5.7°C | 68 mm | 60% | 3.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 19°C with lows near 5.7°C (mean 12.4°C), based on 45 years of NASA POWER data.
May averages 75 mm of rainfall in Winkler, a relatively wet time of year. The wettest on record was 199 mm in 2022.
The hottest May reached 35.3°C in 2025. The coldest dipped to -6.5°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.3°C. Daytime highs moved from 18.7°C to 19.8°C and overnight lows from 5.1°C to 6.7°C over the same span.
May is one of the warmer months of the year in Winkler and a relatively wet time of year, so plan for around 19°C daytime highs and 5.7°C at night.
Not quite — May is the 8th coolest month in Winkler, averaging 12.4°C.
For May in Winkler, pack warm layers and a jacket for chilly mornings, with typical highs of 19°C and lows of 5.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 62% — moderately humid.
Average wind speed in May is 3.7 m/s. The windiest May on record averaged 4.3 m/s (1999).
The wettest May on record was 2022 with 199 mm. On average, May sees 75 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 Winkler 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.
