May is one of the warmer months of the year in Kelowna, with average highs near 16.3°C and lows around 2.5°C (mean 9.4°C). It is about average for rainfall, averaging 46 mm of rainfall and 66% relative humidity across the period.
May is one of the warmer months of the year in Kelowna. Across 45 years of records, the warmest May in Kelowna was 2023 — when the month averaged 14°C — while the coldest was 1984 at 5.3°C. Typical May days reach 16.3°C with nights near 2.5°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Kelowna, averaging 46 mm of rainfall. The wettest May on record was 2020 with 96 mm, while the driest was 2007 at 18 mm.
Relative humidity in Kelowna during May averages 66%. The most humid May was 2020 at 73%, and the least humid was 1992 at 57%.
May receives about 5.5 kWh/m²/day of solar energy in Kelowna. The sunniest May was 2007 at 6.3 kWh/m²/day, and the cloudiest were 1996 and 2022 at 4.6.
Average wind speed in Kelowna during May is 0.3 m/s. The windiest Mays were 2014, 2015 and 2019, among others at 0.4 m/s, while the calmest were 2023, 2024 and 2025, 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 | 8.7°C | 9.7°C | 9.1°C | 10.0°C | 9.4°C | +0.7°C |
| Avg High | 15.7°C | 16.6°C | 16.0°C | 16.7°C | 16.1°C | +0.4°C |
| Avg Low | 1.8°C | 2.7°C | 2.2°C | 3.3°C | 2.7°C | +0.9°C |
| Avg Rain | 42 mm | 44 mm | 40 mm | 51 mm | 55 mm | +13 mm |
May temperatures in Kelowna have risen by about 1.2°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.1°C (2006) to a record high of 31.8°C (1983).
Rainfall in May is about average for rainfall, averaging 46 mm, with a wettest year of 96 mm.
A good time to visit Kelowna
May is a good time to visit Kelowna, with days averaging 16.3°C and nights around 2.5°C (mean 9.4°C, warmer than Kelowna's yearly average) and moderate rainfall. August and July 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 | 16.0°C | 9.1°C | 2.1°C | 26.9°C | -2.2°C | 64 mm | 72% | 0.3 m/s | 5.7 |
| 2024 | 14.8°C | 8.1°C | 1.5°C | 24.9°C | -4.0°C | 46 mm | 69% | 0.3 m/s | 5.2 |
| 2023 🔥 | 21.1°C | 14.0°C | 7.0°C | 28.7°C | 1.3°C | 60 mm | 67% | 0.3 m/s | 5.8 |
| 2022 | 13.1°C | 7.0°C | 0.9°C | 20.7°C | -3.6°C | 44 mm | 70% | 0.3 m/s | 4.6 |
| 2021 | 16.1°C | 9.2°C | 2.2°C | 26.4°C | -3.2°C | 21 mm | 63% | 0.3 m/s | 5.8 |
| 2020 🌧️ | 15.4°C | 8.9°C | 2.4°C | 23.1°C | -4.1°C | 96 mm | 73% | 0.3 m/s | 5.3 |
| 2019 | 18.6°C | 11.6°C | 4.6°C | 26.3°C | -0.9°C | 27 mm | 63% | 0.4 m/s | 5.5 |
| 2018 | 19.6°C | 12.6°C | 5.5°C | 27.2°C | -0.5°C | 37 mm | 70% | 0.3 m/s | 6.1 |
| 2017 | 16.5°C | 10.0°C | 3.5°C | 27.3°C | -3.1°C | 73 mm | 70% | 0.3 m/s | 5.7 |
| 2016 | 17.6°C | 11.0°C | 4.3°C | 25.5°C | 0.4°C | 56 mm | 65% | 0.3 m/s | 5.6 |
| 2015 | 18.2°C | 11.3°C | 4.5°C | 26.4°C | -3.1°C | 45 mm | 63% | 0.4 m/s | 6 |
| 2014 | 15.9°C | 9.6°C | 3.4°C | 23.2°C | -1.0°C | 52 mm | 67% | 0.4 m/s | 5.6 |
| 2013 | 17.8°C | 10.7°C | 3.5°C | 27.4°C | -4.9°C | 65 mm | 65% | 0.3 m/s | 5.8 |
| 2012 | 15.6°C | 8.4°C | 1.3°C | 26.6°C | -4.3°C | 20 mm | 61% | 0.3 m/s | 5.8 |
| 2011 | 13.7°C | 7.3°C | 1.0°C | 20.4°C | -4.2°C | 77 mm | 72% | 0.3 m/s | 5.2 |
| 2010 | 13.6°C | 7.5°C | 1.4°C | 22.6°C | -3.1°C | 56 mm | 66% | 0.3 m/s | 5 |
| 2009 | 15.9°C | 8.7°C | 1.5°C | 27.4°C | -3.2°C | 29 mm | 63% | 0.3 m/s | 6.1 |
| 2008 | 16.7°C | 9.5°C | 2.2°C | 28.2°C | -3.5°C | 36 mm | 66% | 0.3 m/s | 5.4 |
| 2007 | 17.2°C | 9.6°C | 2.0°C | 26.8°C | -3.4°C | 18 mm | 60% | 0.3 m/s | 6.3 |
| 2006 | 17.2°C | 10.0°C | 2.9°C | 29.8°C | -5.1°C | 54 mm | 62% | 0.4 m/s | 5.7 |
| 2005 | 17.6°C | 11.1°C | 4.5°C | 29.6°C | -1.0°C | 36 mm | 63% | 0.4 m/s | 5.6 |
| 2004 | 15.8°C | 9.6°C | 3.4°C | 24.4°C | -0.1°C | 56 mm | 65% | 0.3 m/s | 5 |
| 2003 | 14.7°C | 8.1°C | 1.6°C | 27.0°C | -4.2°C | 30 mm | 65% | 0.3 m/s | 5 |
| 2002 | 14.0°C | 7.5°C | 1.0°C | 21.4°C | -4.6°C | 61 mm | 65% | 0.3 m/s | 5 |
| 2001 | 17.0°C | 9.2°C | 1.5°C | 29.2°C | -4.3°C | 33 mm | 61% | 0.3 m/s | 5.9 |
| 2000 | 14.2°C | 7.8°C | 1.3°C | 20.9°C | -4.8°C | 47 mm | 65% | 0.3 m/s | 5.6 |
| 1999 | 13.6°C | 6.7°C | -0.2°C | 27.3°C | -4.9°C | 44 mm | 64% | 0.3 m/s | 5.6 |
| 1998 | 19.1°C | 11.9°C | 4.6°C | 25.2°C | 0.3°C | 46 mm | 65% | 0.3 m/s | 5.8 |
| 1997 | 16.8°C | 9.8°C | 2.9°C | 26.0°C | -2.6°C | 58 mm | 67% | 0.4 m/s | 5.6 |
| 1996 | 12.0°C | 6.4°C | 0.8°C | 20.5°C | -2.7°C | 52 mm | 73% | 0.3 m/s | 4.6 |
| 1995 | 17.8°C | 10.4°C | 3.0°C | 27.2°C | -2.2°C | 23 mm | 60% | 0.4 m/s | 6.2 |
| 1994 | 17.5°C | 10.3°C | 3.2°C | 25.7°C | -2.0°C | 26 mm | 62% | 0.3 m/s | 5.5 |
| 1993 | 21.1°C | 13.3°C | 5.6°C | 31.3°C | -2.5°C | 31 mm | 60% | 0.3 m/s | 5.8 |
| 1992 | 18.6°C | 11.0°C | 3.3°C | 28.4°C | -3.7°C | 20 mm | 57% | 0.3 m/s | 6 |
| 1991 | 15.2°C | 8.6°C | 1.9°C | 21.5°C | -1.7°C | 49 mm | 70% | 0.3 m/s | 5.1 |
| 1990 | 14.5°C | 8.4°C | 2.4°C | 24.0°C | -1.6°C | 92 mm | 72% | 0.3 m/s | 4.7 |
| 1989 | 15.7°C | 8.9°C | 2.1°C | 22.9°C | -1.9°C | 65 mm | 66% | 0.3 m/s | 5.4 |
| 1988 | 16.3°C | 9.0°C | 1.7°C | 28.1°C | -3.9°C | 44 mm | 63% | 0.3 m/s | 5.1 |
| 1987 | 17.8°C | 10.2°C | 2.7°C | 27.5°C | -2.8°C | 23 mm | 58% | 0.3 m/s | 5.8 |
| 1986 | 15.8°C | 8.8°C | 1.8°C | 31.4°C | -4.5°C | 32 mm | 65% | 0.3 m/s | 5.1 |
| 1985 | 17.8°C | 10.3°C | 2.7°C | 27.0°C | -4.9°C | 52 mm | 63% | 0.3 m/s | 5.6 |
| 1984 ❄️ | 11.6°C | 5.3°C | -0.9°C | 21.0°C | -3.9°C | 41 mm | 71% | 0.3 m/s | 5 |
| 1983 | 17.4°C | 10.4°C | 3.4°C | 31.8°C | -2.4°C | 28 mm | 65% | 0.3 m/s | — |
| 1982 | 14.1°C | 7.1°C | 0.2°C | 23.9°C | -4.5°C | 31 mm | 67% | 0.4 m/s | — |
| 1981 | 14.8°C | 8.5°C | 2.1°C | 23.9°C | -2.4°C | 65 mm | 71% | 0.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 16.3°C with lows near 2.5°C (mean 9.4°C), based on 45 years of NASA POWER data.
May averages 46 mm of rainfall in Kelowna, about average for rainfall. The wettest on record was 96 mm in 2020.
The hottest May reached 31.8°C in 1983. The coldest dipped to -5.1°C in 2006.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.2°C. Daytime highs moved from 15.1°C to 16.2°C and overnight lows from 1.5°C to 2.7°C over the same span.
May is one of the warmer months of the year in Kelowna and about average for rainfall, so plan for around 16.3°C daytime highs and 2.5°C at night.
Not quite — May is the 8th coolest month in Kelowna, averaging 9.4°C.
For May in Kelowna, pack warm layers and a jacket for chilly mornings, with typical highs of 16.3°C and lows of 2.5°C.
Relative humidity in May averages 66% — moderately humid.
Average wind speed in May is 0.3 m/s. The windiest May on record averaged 0.4 m/s (1982).
The wettest May on record was 2020 with 96 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 Kelowna 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.
