December is one of the cooler months of the year in Kelowna, with average highs near -3.4°C and lows around -11.3°C (mean -7.3°C). It is about average for rainfall, averaging 40 mm of rainfall and 94% relative humidity across the period.
December is one of the cooler months of the year in Kelowna. Across 45 years of records, the warmest December in Kelowna was 2025 — when the month averaged -3.5°C — while the coldest was 1983 at -14.1°C. Typical December days reach -3.4°C with nights near -11.3°C. The long-term trend is warming, about 0.4°C per decade.
December is about average for rainfall in Kelowna, averaging 40 mm of rainfall. The wettest December on record was 2025 with 85 mm, while the driest was 1985 at 13 mm.
Relative humidity in Kelowna during December averages 94%. The most humid December was 2024 at 99%, and the least humid was 1998 at 88%.
December receives about 0.8 kWh/m²/day of solar energy in Kelowna. The sunniest Decembers were 2011, 2017 and 2020, among others at 0.9 kWh/m²/day, and the cloudiest were 2012 and 2019 at 0.6.
Average wind speed in Kelowna during December is 0.3 m/s. The windiest December was 1983 at 0.5 m/s, while the calmest was 1991 at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -8.4°C | -7.4°C | -7.0°C | -7.1°C | -6.5°C | +1.9°C |
| Avg High | -4.3°C | -3.4°C | -3.0°C | -3.3°C | -2.8°C | +1.5°C |
| Avg Low | -12.5°C | -11.4°C | -11.1°C | -11.0°C | -10.2°C | +2.3°C |
| Avg Rain | 30 mm | 37 mm | 35 mm | 46 mm | 57 mm | +27 mm |
December temperatures in Kelowna have risen by about 3.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -36.5°C (2021) to a record high of 9°C (2021).
Rainfall in December is about average for rainfall, averaging 40 mm, with a wettest year of 85 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
A quieter season to visit Kelowna
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Kelowna. That said, December — with days averaging -3.4°C and nights around -11.3°C (mean -7.3°C) and moderate rainfall (40 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🔥 🌧️ | -0.7°C | -3.5°C | -6.3°C | 3.0°C | -20.9°C | 85 mm | 94% | 0.3 m/s | — |
| 2024 | -1.6°C | -5.7°C | -9.9°C | 0.1°C | -15.1°C | 57 mm | 99% | 0.3 m/s | 0.7 |
| 2023 | -0.1°C | -3.7°C | -7.4°C | 3.1°C | -17.1°C | 50 mm | 96% | 0.3 m/s | 0.7 |
| 2022 | -7.0°C | -11.0°C | -15.0°C | 0.7°C | -34.1°C | 38 mm | 95% | 0.4 m/s | 0.8 |
| 2021 | -6.5°C | -10.4°C | -14.4°C | 9.0°C | -36.5°C | 45 mm | 89% | 0.3 m/s | 0.8 |
| 2020 | -1.1°C | -4.8°C | -8.5°C | 3.1°C | -16.4°C | 66 mm | 95% | 0.3 m/s | 0.9 |
| 2019 | -2.1°C | -5.7°C | -9.2°C | 3.3°C | -19.1°C | 80 mm | 98% | 0.3 m/s | 0.6 |
| 2018 | -1.7°C | -5.3°C | -8.8°C | 2.7°C | -16.4°C | 37 mm | 92% | 0.3 m/s | 0.8 |
| 2017 | -5.5°C | -9.8°C | -14.1°C | 0.2°C | -28.3°C | 65 mm | 96% | 0.4 m/s | 0.9 |
| 2016 | -7.6°C | -12.0°C | -16.5°C | 0.7°C | -27.7°C | 42 mm | 95% | 0.4 m/s | 0.8 |
| 2015 | -3.0°C | -6.5°C | -10.1°C | 3.8°C | -19.1°C | 44 mm | 94% | 0.3 m/s | 0.7 |
| 2014 | -1.2°C | -5.0°C | -8.8°C | 3.8°C | -22.6°C | 43 mm | 94% | 0.3 m/s | 0.8 |
| 2013 | -4.5°C | -8.4°C | -12.2°C | 2.5°C | -29.8°C | 43 mm | 94% | 0.3 m/s | 0.8 |
| 2012 | -2.7°C | -6.4°C | -10.2°C | 2.9°C | -17.2°C | 49 mm | 95% | 0.4 m/s | 0.6 |
| 2011 | -1.4°C | -5.1°C | -8.8°C | 3.5°C | -13.0°C | 21 mm | 91% | 0.3 m/s | 0.9 |
| 2010 | -3.0°C | -7.2°C | -11.5°C | 1.2°C | -20.9°C | 34 mm | 96% | 0.3 m/s | 0.8 |
| 2009 | -6.0°C | -10.2°C | -14.5°C | 1.2°C | -26.4°C | 28 mm | 91% | 0.3 m/s | 0.9 |
| 2008 | -7.4°C | -11.7°C | -15.9°C | 4.7°C | -30.0°C | 52 mm | 94% | 0.4 m/s | 0.8 |
| 2007 | -2.5°C | -6.4°C | -10.3°C | 4.2°C | -18.7°C | 42 mm | 91% | 0.3 m/s | 0.7 |
| 2006 | -2.2°C | -6.5°C | -10.8°C | 2.4°C | -17.9°C | 38 mm | 95% | 0.3 m/s | 0.7 |
| 2005 | -3.0°C | -6.8°C | -10.6°C | 2.3°C | -18.6°C | 21 mm | 94% | 0.3 m/s | 0.8 |
| 2004 | -0.6°C | -4.2°C | -7.9°C | 4.3°C | -13.7°C | 43 mm | 93% | 0.3 m/s | 0.8 |
| 2003 | -2.1°C | -6.3°C | -10.5°C | 2.1°C | -18.3°C | 20 mm | 92% | 0.3 m/s | 0.8 |
| 2002 | 0.2°C | -3.7°C | -7.6°C | 4.7°C | -14.6°C | 36 mm | 90% | 0.3 m/s | 0.8 |
| 2001 | -2.1°C | -6.3°C | -10.4°C | 1.9°C | -15.8°C | 35 mm | 92% | 0.3 m/s | 0.9 |
| 2000 | -3.9°C | -8.0°C | -12.1°C | 2.4°C | -21.4°C | 32 mm | 93% | 0.4 m/s | 0.8 |
| 1999 | -0.8°C | -4.5°C | -8.3°C | 3.0°C | -12.5°C | 28 mm | 91% | 0.3 m/s | 0.7 |
| 1998 | -3.3°C | -6.6°C | -9.9°C | 4.1°C | -25.8°C | 53 mm | 88% | 0.3 m/s | 0.7 |
| 1997 | -0.4°C | -4.3°C | -8.1°C | 3.9°C | -13.6°C | 25 mm | 90% | 0.3 m/s | 0.8 |
| 1996 | -7.8°C | -12.3°C | -16.8°C | 0.4°C | -35.5°C | 44 mm | 98% | 0.4 m/s | 0.8 |
| 1995 | -2.6°C | -6.8°C | -11.0°C | 2.2°C | -24.4°C | 46 mm | 90% | 0.3 m/s | 0.9 |
| 1994 | -3.2°C | -7.2°C | -11.3°C | 1.9°C | -23.1°C | 29 mm | 92% | 0.3 m/s | 0.8 |
| 1993 | -2.2°C | -5.8°C | -9.4°C | 2.2°C | -15.3°C | 39 mm | 94% | 0.3 m/s | 0.7 |
| 1992 | -6.7°C | -11.1°C | -15.6°C | 0.3°C | -26.0°C | 37 mm | 95% | 0.4 m/s | 0.8 |
| 1991 | -0.5°C | -4.2°C | -8.0°C | 3.5°C | -14.2°C | 15 mm | 92% | 0.2 m/s | 0.7 |
| 1990 | -6.5°C | -10.9°C | -15.4°C | 1.8°C | -33.8°C | 52 mm | 91% | 0.3 m/s | 0.8 |
| 1989 | -0.6°C | -4.3°C | -7.9°C | 2.2°C | -14.3°C | 30 mm | 94% | 0.3 m/s | 0.7 |
| 1988 | -3.1°C | -7.1°C | -11.2°C | 1.9°C | -20.5°C | 36 mm | 93% | 0.3 m/s | 0.8 |
| 1987 | -3.2°C | -6.9°C | -10.5°C | 2.4°C | -20.1°C | 41 mm | 90% | 0.3 m/s | 0.8 |
| 1986 | -2.5°C | -6.6°C | -10.7°C | 1.7°C | -16.1°C | 19 mm | 93% | 0.3 m/s | 0.8 |
| 1985 | -3.8°C | -7.9°C | -11.9°C | 0.9°C | -25.9°C | 13 mm | 97% | 0.3 m/s | 0.9 |
| 1984 | -8.7°C | -13.3°C | -17.9°C | -0.2°C | -31.5°C | 29 mm | 94% | 0.4 m/s | 0.9 |
| 1983 ❄️ | -9.2°C | -14.1°C | -19.0°C | -0.5°C | -34.2°C | 32 mm | 97% | 0.5 m/s | — |
| 1982 | -4.4°C | -8.1°C | -11.9°C | 1.2°C | -18.5°C | 29 mm | 96% | 0.3 m/s | — |
| 1981 | -3.3°C | -7.4°C | -11.6°C | 2.8°C | -20.9°C | 42 mm | 93% | 0.3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -3.4°C with lows near -11.3°C (mean -7.3°C), based on 45 years of NASA POWER data.
December averages 40 mm of rainfall in Kelowna, about average for rainfall. The wettest on record was 85 mm in 2025.
The hottest December reached 9°C in 2021. The coldest dipped to -36.5°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3.3°C. Daytime highs moved from -5.9°C to -3.2°C and overnight lows from -14.5°C to -10.6°C over the same span.
December is one of the cooler months of the year in Kelowna and about average for rainfall, so plan for around -3.4°C daytime highs and -11.3°C at night.
Yes — December is the coldest month of the year in Kelowna, averaging -7.3°C.
For December in Kelowna, pack warm layers and a jacket for chilly mornings, with typical highs of -3.4°C and lows of -11.3°C.
Relative humidity in December averages 94% — quite humid.
Average wind speed in December is 0.3 m/s. The windiest December on record averaged 0.5 m/s (1983).
The wettest December on record was 2025 with 85 mm. On average, December sees 40 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 December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
