August is one of the warmer months of the year in Whistler, with average highs near 17.7°C and lows around 7.9°C (mean 12.8°C). It is one of the drier months, averaging 66 mm of rainfall and 78% relative humidity across the period.
August is one of the warmer months of the year in Whistler. Across 45 years of records, the warmest August in Whistler was 2022 — when the month averaged 15.7°C — while the coldest was 1995 at 9.1°C. Typical August days reach 17.7°C with nights near 7.9°C. The long-term trend is warming, about 0.5°C per decade.
August is one of the drier months in Whistler, averaging 66 mm of rainfall. The wettest August on record was 1991 with 227 mm, while the driest was 1986 at 12 mm.
Relative humidity in Whistler during August averages 78%. The most humid August was 1991 at 85%, and the least humid was 2017 at 72%.
August receives about 5 kWh/m²/day of solar energy in Whistler. The sunniest Augusts were 2006 and 2017 at 5.6 kWh/m²/day, and the cloudiest was 1991 at 4.2.
Average wind speed in Whistler during August is 0.3 m/s. The windiest August was 2017 at 0.4 m/s, while the calmest were 2020, 2021 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.1°C | 12.3°C | 12.5°C | 13.5°C | 13.9°C | +1.8°C |
| Avg High | 17.2°C | 17.0°C | 17.3°C | 18.4°C | 19.0°C | +1.8°C |
| Avg Low | 7.1°C | 7.5°C | 7.6°C | 8.6°C | 8.8°C | +1.7°C |
| Avg Rain | 47 mm | 81 mm | 73 mm | 56 mm | 75 mm | +28 mm |
August temperatures in Whistler have risen by about 2.5°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -0.1°C (2010) to a record high of 30.6°C (2025).
Rainfall in August is one of the drier months, averaging 66 mm, with a wettest year of 227 mm.
One of the best times to visit Whistler
August is one of the best times to visit Whistler. Expect days averaging 17.7°C and nights around 7.9°C (mean 12.8°C) — warmer than Whistler's yearly average — with moderate rainfall (66 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.6°C | 14.4°C | 9.2°C | 30.6°C | 3.0°C | 100 mm | 81% | 0.2 m/s | 5.1 |
| 2024 | 18.9°C | 13.9°C | 9.0°C | 26.5°C | 2.8°C | 112 mm | 79% | 0.3 m/s | 4.8 |
| 2023 | 19.7°C | 14.2°C | 8.8°C | 29.1°C | 3.9°C | 57 mm | 77% | 0.3 m/s | 5.1 |
| 2022 🔥 | 21.0°C | 15.7°C | 10.3°C | 29.3°C | 4.7°C | 41 mm | 76% | 0.3 m/s | 5.2 |
| 2021 | 18.6°C | 13.6°C | 8.6°C | 30.4°C | 2.4°C | 56 mm | 80% | 0.2 m/s | 4.9 |
| 2020 | 16.4°C | 11.7°C | 6.9°C | 24.5°C | 3.7°C | 83 mm | 81% | 0.2 m/s | 5.1 |
| 2019 | 17.8°C | 13.2°C | 8.5°C | 23.9°C | 3.9°C | 60 mm | 80% | 0.3 m/s | 5.1 |
| 2018 | 19.1°C | 14.1°C | 9.0°C | 26.0°C | 1.3°C | 32 mm | 76% | 0.3 m/s | 5.4 |
| 2017 | 20.8°C | 15.3°C | 9.7°C | 29.6°C | 4.5°C | 17 mm | 72% | 0.4 m/s | 5.6 |
| 2016 | 18.4°C | 13.4°C | 8.3°C | 24.5°C | 4.6°C | 35 mm | 79% | 0.3 m/s | 5.2 |
| 2015 | 17.5°C | 12.9°C | 8.4°C | 27.3°C | 4.6°C | 147 mm | 75% | 0.3 m/s | 5.1 |
| 2014 | 19.5°C | 14.7°C | 9.8°C | 26.9°C | 4.3°C | 33 mm | 77% | 0.3 m/s | 5.2 |
| 2013 | 17.6°C | 13.3°C | 9.0°C | 24.5°C | 5.1°C | 127 mm | 83% | 0.2 m/s | 4.7 |
| 2012 | 18.9°C | 13.6°C | 8.3°C | 28.2°C | 3.1°C | 27 mm | 75% | 0.3 m/s | 5.5 |
| 2011 | 17.0°C | 12.1°C | 7.3°C | 22.1°C | 1.7°C | 38 mm | 79% | 0.3 m/s | 5.2 |
| 2010 | 17.4°C | 12.4°C | 7.4°C | 28.1°C | -0.1°C | 43 mm | 77% | 0.3 m/s | 5 |
| 2009 | 17.9°C | 12.9°C | 8.0°C | 24.4°C | 2.8°C | 49 mm | 79% | 0.3 m/s | 5.1 |
| 2008 | 16.6°C | 11.8°C | 6.9°C | 27.4°C | 1.2°C | 153 mm | 78% | 0.2 m/s | 4.4 |
| 2007 | 15.5°C | 11.2°C | 6.8°C | 22.5°C | 3.5°C | 54 mm | 81% | 0.3 m/s | 4.8 |
| 2006 | 17.9°C | 12.6°C | 7.3°C | 25.0°C | 4.1°C | 19 mm | 75% | 0.3 m/s | 5.6 |
| 2005 | 18.4°C | 13.3°C | 8.1°C | 22.5°C | 3.4°C | 49 mm | 73% | 0.3 m/s | 5.5 |
| 2004 | 18.5°C | 14.2°C | 9.9°C | 29.1°C | 4.9°C | 110 mm | 79% | 0.2 m/s | 4.5 |
| 2003 | 17.7°C | 12.5°C | 7.4°C | 26.5°C | 2.1°C | 20 mm | 78% | 0.3 m/s | 5.3 |
| 2002 | 18.2°C | 13.0°C | 7.7°C | 26.9°C | 3.4°C | 41 mm | 77% | 0.3 m/s | 5.3 |
| 2001 | 16.4°C | 12.2°C | 7.9°C | 25.3°C | 4.1°C | 177 mm | 80% | 0.2 m/s | 4.6 |
| 2000 | 15.8°C | 11.0°C | 6.2°C | 22.7°C | 3.0°C | 57 mm | 82% | 0.3 m/s | 5.3 |
| 1999 | 17.3°C | 12.7°C | 8.2°C | 24.3°C | 2.7°C | 91 mm | 80% | 0.2 m/s | 4.7 |
| 1998 | 18.1°C | 13.2°C | 8.3°C | 24.7°C | 3.6°C | 25 mm | 79% | 0.3 m/s | 5.4 |
| 1997 | 17.9°C | 13.1°C | 8.3°C | 24.2°C | 3.7°C | 99 mm | 79% | 0.3 m/s | 5.2 |
| 1996 | 17.5°C | 12.5°C | 7.5°C | 28.8°C | 3.3°C | 64 mm | 75% | 0.3 m/s | 4.8 |
| 1995 ❄️ | 13.1°C | 9.1°C | 5.0°C | 19.7°C | 1.1°C | 102 mm | 84% | 0.2 m/s | 4.5 |
| 1994 | 17.0°C | 12.1°C | 7.2°C | 24.5°C | 3.5°C | 46 mm | 76% | 0.3 m/s | 4.7 |
| 1993 | 17.0°C | 12.0°C | 7.0°C | 25.5°C | 2.3°C | 56 mm | 78% | 0.3 m/s | 4.9 |
| 1992 | 17.8°C | 12.6°C | 7.3°C | 27.1°C | 0.9°C | 41 mm | 75% | 0.3 m/s | 5.3 |
| 1991 🌧️ | 16.6°C | 12.4°C | 8.2°C | 23.3°C | 4.5°C | 227 mm | 85% | 0.2 m/s | 4.2 |
| 1990 | 18.1°C | 13.0°C | 7.9°C | 27.9°C | 2.7°C | 54 mm | 77% | 0.3 m/s | 4.8 |
| 1989 | 15.6°C | 11.1°C | 6.6°C | 22.5°C | 2.9°C | 111 mm | 83% | 0.2 m/s | 4.3 |
| 1988 | 16.6°C | 11.8°C | 7.0°C | 24.6°C | 3.3°C | 57 mm | 80% | 0.3 m/s | 4.5 |
| 1987 | 17.5°C | 12.1°C | 6.8°C | 23.5°C | 2.2°C | 32 mm | 76% | 0.3 m/s | 5.1 |
| 1986 | 20.3°C | 14.7°C | 9.1°C | 28.1°C | 3.8°C | 12 mm | 74% | 0.3 m/s | 5.5 |
| 1985 | 16.4°C | 11.2°C | 6.0°C | 20.8°C | 1.4°C | 33 mm | 75% | 0.3 m/s | 5.2 |
| 1984 | 15.3°C | 10.7°C | 6.0°C | 20.6°C | 2.0°C | 44 mm | 82% | 0.2 m/s | 4.4 |
| 1983 | 17.4°C | 12.2°C | 7.1°C | 24.6°C | 3.9°C | 51 mm | 78% | 0.3 m/s | — |
| 1982 | 16.0°C | 11.3°C | 6.5°C | 23.1°C | 3.4°C | 47 mm | 79% | 0.3 m/s | — |
| 1981 | 19.6°C | 14.2°C | 8.9°C | 28.9°C | 0.8°C | 33 mm | 75% | 0.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 17.7°C with lows near 7.9°C (mean 12.8°C), based on 45 years of NASA POWER data.
August averages 66 mm of rainfall in Whistler, one of the drier months. The wettest on record was 227 mm in 1991.
The hottest August reached 30.6°C in 2025. The coldest dipped to -0.1°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.5°C. Daytime highs moved from 16.9°C to 19.6°C and overnight lows from 6.9°C to 9.2°C over the same span.
August is one of the warmer months of the year in Whistler and one of the drier months, so plan for around 17.7°C daytime highs and 7.9°C at night.
Not quite — August is the 12th coolest month in Whistler, averaging 12.8°C.
For August in Whistler, pack warm layers and a jacket for chilly mornings, with typical highs of 17.7°C and lows of 7.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 78% — quite humid.
Average wind speed in August is 0.3 m/s. The windiest August on record averaged 0.4 m/s (2017).
The wettest August on record was 1991 with 227 mm. On average, August sees 66 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 August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
