December is one of the cooler months of the year in Whistler, with average highs near -3.8°C and lows around -10.6°C (mean -7.2°C). It is a relatively wet time of year, averaging 227 mm of rainfall and 96% relative humidity across the period.
December is one of the cooler months of the year in Whistler. Across 45 years of records, the warmest December in Whistler was 2023 — when the month averaged -3.1°C — while the coldest was 1983 at -13.8°C. Typical December days reach -3.8°C with nights near -10.6°C. The long-term trend is warming, about 0.4°C per decade.
December is a relatively wet time of year in Whistler, averaging 227 mm of rainfall. The wettest December on record was 1998 with 391 mm, while the driest was 1985 at 70 mm.
Relative humidity in Whistler during December averages 96%. The most humid December was 2012 at 99%, and the least humid was 1985 at 89%.
December receives about 0.7 kWh/m²/day of solar energy in Whistler. The sunniest Decembers were 2009 and 2017 at 0.9 kWh/m²/day, and the cloudiest was 1989 at 0.4.
Average wind speed in Whistler during December is 0.5 m/s. The windiest Decembers were 2009, 2011 and 2017 at 0.7 m/s, while the calmest were 2002, 2023 and 2025 at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -8.0°C | -7.1°C | -7.2°C | -7.2°C | -6.0°C | +2°C |
| Avg High | -4.3°C | -3.8°C | -3.7°C | -3.9°C | -3.0°C | +1.3°C |
| Avg Low | -11.6°C | -10.4°C | -10.6°C | -10.6°C | -9.0°C | +2.6°C |
| Avg Rain | 173 mm | 236 mm | 245 mm | 232 mm | 255 mm | +82 mm |
December temperatures in Whistler have risen by about 3.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -32.8°C (1983) to a record high of 4°C (1999).
Rainfall in December is a relatively wet time of year, averaging 227 mm, with a wettest year of 391 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 Whistler
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Whistler. That said, December — with days averaging -3.8°C and nights around -10.6°C (mean -7.2°C) and higher rainfall (227 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 | -1.9°C | -4.0°C | -6.1°C | 0.8°C | -26.9°C | 374 mm | 99% | 0.4 m/s | — |
| 2024 | -0.8°C | -3.4°C | -5.9°C | 2.6°C | -14.9°C | 239 mm | 94% | 0.5 m/s | 0.7 |
| 2023 🔥 | -0.6°C | -3.1°C | -5.6°C | 3.1°C | -15.3°C | 258 mm | 98% | 0.4 m/s | 0.7 |
| 2022 | -5.7°C | -9.4°C | -13.1°C | 0.4°C | -29.8°C | 212 mm | 98% | 0.5 m/s | 0.8 |
| 2021 | -7.5°C | -11.8°C | -16.2°C | 0.2°C | -32.0°C | 219 mm | 98% | 0.5 m/s | 0.7 |
| 2020 | -1.7°C | -4.4°C | -7.1°C | 2.3°C | -18.4°C | 230 mm | 93% | 0.5 m/s | 0.7 |
| 2019 | -2.1°C | -4.8°C | -7.5°C | 1.0°C | -19.7°C | 243 mm | 98% | 0.5 m/s | 0.7 |
| 2018 | -3.1°C | -6.6°C | -10.0°C | 0.1°C | -20.2°C | 354 mm | 96% | 0.6 m/s | 0.7 |
| 2017 | -4.1°C | -8.0°C | -12.0°C | 3.8°C | -25.3°C | 113 mm | 89% | 0.7 m/s | 0.9 |
| 2016 | -7.6°C | -11.7°C | -15.7°C | -0.6°C | -28.1°C | 154 mm | 97% | 0.6 m/s | 0.8 |
| 2015 | -3.8°C | -6.7°C | -9.6°C | 1.0°C | -20.8°C | 351 mm | 97% | 0.6 m/s | 0.6 |
| 2014 | -2.8°C | -5.6°C | -8.4°C | 2.3°C | -25.2°C | 293 mm | 96% | 0.5 m/s | 0.7 |
| 2013 | -5.0°C | -8.9°C | -12.8°C | 0.1°C | -29.9°C | 93 mm | 98% | 0.6 m/s | 0.7 |
| 2012 | -4.1°C | -6.9°C | -9.8°C | 0.0°C | -17.7°C | 256 mm | 99% | 0.5 m/s | 0.5 |
| 2011 | -3.1°C | -6.5°C | -9.9°C | 1.3°C | -20.5°C | 155 mm | 92% | 0.7 m/s | 0.8 |
| 2010 | -3.5°C | -6.7°C | -10.0°C | 0.1°C | -25.5°C | 311 mm | 98% | 0.5 m/s | 0.6 |
| 2009 | -5.7°C | -10.0°C | -14.2°C | 0.5°C | -27.4°C | 118 mm | 93% | 0.7 m/s | 0.9 |
| 2008 | -7.1°C | -10.9°C | -14.8°C | 1.7°C | -32.6°C | 176 mm | 97% | 0.5 m/s | 0.8 |
| 2007 | -4.8°C | -7.9°C | -11.1°C | 0.2°C | -23.7°C | 362 mm | 98% | 0.5 m/s | 0.6 |
| 2006 | -2.5°C | -5.4°C | -8.3°C | 3.4°C | -19.9°C | 326 mm | 96% | 0.6 m/s | 0.5 |
| 2005 | -2.8°C | -5.9°C | -9.0°C | 3.0°C | -18.9°C | 251 mm | 94% | 0.5 m/s | 0.7 |
| 2004 | -2.2°C | -5.3°C | -8.5°C | 2.6°C | -17.3°C | 260 mm | 98% | 0.5 m/s | 0.7 |
| 2003 | -3.0°C | -6.4°C | -9.8°C | 1.9°C | -20.4°C | 248 mm | 97% | 0.5 m/s | 0.6 |
| 2002 | -1.9°C | -5.0°C | -8.1°C | 3.0°C | -19.7°C | 294 mm | 98% | 0.4 m/s | 0.7 |
| 2001 | -3.0°C | -6.8°C | -10.7°C | 0.1°C | -18.6°C | 280 mm | 96% | 0.6 m/s | 0.8 |
| 2000 | -4.4°C | -8.2°C | -12.0°C | 0.7°C | -24.5°C | 136 mm | 95% | 0.5 m/s | 0.7 |
| 1999 | -1.1°C | -4.1°C | -7.2°C | 4.0°C | -14.3°C | 243 mm | 92% | 0.6 m/s | 0.6 |
| 1998 🌧️ | -4.3°C | -7.3°C | -10.2°C | 0.1°C | -31.4°C | 391 mm | 99% | 0.5 m/s | 0.6 |
| 1997 | -2.2°C | -5.0°C | -7.8°C | 0.8°C | -14.7°C | 203 mm | 95% | 0.6 m/s | 0.7 |
| 1996 | -6.6°C | -10.3°C | -14.0°C | 0.1°C | -29.5°C | 273 mm | 96% | 0.5 m/s | 0.7 |
| 1995 | -2.9°C | -5.9°C | -8.9°C | 0.3°C | -25.9°C | 241 mm | 93% | 0.6 m/s | 0.7 |
| 1994 | -3.9°C | -7.2°C | -10.4°C | 0.5°C | -27.3°C | 249 mm | 97% | 0.5 m/s | 0.8 |
| 1993 | -2.0°C | -5.1°C | -8.2°C | 0.2°C | -17.5°C | 238 mm | 91% | 0.6 m/s | 0.7 |
| 1992 | -6.4°C | -10.2°C | -14.1°C | -0.6°C | -28.4°C | 124 mm | 96% | 0.6 m/s | 0.8 |
| 1991 | -1.7°C | -4.8°C | -8.0°C | 2.9°C | -17.4°C | 166 mm | 95% | 0.5 m/s | 0.6 |
| 1990 | -7.1°C | -11.2°C | -15.3°C | -0.4°C | -32.0°C | 230 mm | 98% | 0.5 m/s | 0.5 |
| 1989 | -1.4°C | -4.1°C | -6.8°C | 1.7°C | -13.8°C | 159 mm | 95% | 0.6 m/s | 0.4 |
| 1988 | -3.2°C | -6.2°C | -9.3°C | 2.8°C | -18.7°C | 168 mm | 92% | 0.6 m/s | 0.7 |
| 1987 | -4.6°C | -8.1°C | -11.5°C | 0.0°C | -21.6°C | 236 mm | 91% | 0.6 m/s | 0.7 |
| 1986 | -2.1°C | -6.0°C | -9.9°C | 1.6°C | -18.5°C | 222 mm | 94% | 0.5 m/s | 0.7 |
| 1985 | -2.6°C | -6.2°C | -9.8°C | 3.0°C | -27.7°C | 70 mm | 89% | 0.6 m/s | 0.7 |
| 1984 | -7.4°C | -11.4°C | -15.5°C | -0.8°C | -27.0°C | 126 mm | 93% | 0.6 m/s | 0.7 |
| 1983 ❄️ | -9.3°C | -13.8°C | -18.3°C | -0.3°C | -32.8°C | 94 mm | 98% | 0.6 m/s | — |
| 1982 | -3.6°C | -7.1°C | -10.5°C | 0.1°C | -21.8°C | 225 mm | 93% | 0.6 m/s | — |
| 1981 | -4.9°C | -8.9°C | -13.0°C | 0.1°C | -21.4°C | 257 mm | 99% | 0.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -3.8°C with lows near -10.6°C (mean -7.2°C), based on 45 years of NASA POWER data.
December averages 227 mm of rainfall in Whistler, a relatively wet time of year. The wettest on record was 391 mm in 1998.
The hottest December reached 4°C in 1999. The coldest dipped to -32.8°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3.2°C. Daytime highs moved from -5.6°C to -3.3°C and overnight lows from -13.4°C to -9.4°C over the same span.
December is one of the cooler months of the year in Whistler and a relatively wet time of year, so plan for around -3.8°C daytime highs and -10.6°C at night.
Yes — December is the coldest month of the year in Whistler, averaging -7.2°C.
For December in Whistler, pack warm layers and a jacket for chilly mornings, with typical highs of -3.8°C and lows of -10.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 96% — quite humid.
Average wind speed in December is 0.5 m/s. The windiest December on record averaged 0.7 m/s (2009).
The wettest December on record was 1998 with 391 mm. On average, December sees 227 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 Whistler 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.
