August is one of the warmer months of the year in Squamish, with average highs near 20.1°C and lows around 12.3°C (mean 16.2°C). It is one of the drier months, averaging 62 mm of rainfall and 78% relative humidity across the period.
August is one of the warmer months of the year in Squamish. Across 45 years of records, the warmest August in Squamish was 2022 — when the month averaged 19°C — while the coldest was 1995 at 13.2°C. Typical August days reach 20.1°C with nights near 12.3°C. The long-term trend is warming, about 0.4°C per decade.
August is one of the drier months in Squamish, averaging 62 mm of rainfall. The wettest August on record was 1991 with 251 mm, while the driest was 1986 at 8 mm.
Relative humidity in Squamish during August averages 78%. The most humid August was 1991 at 84%, and the least humid was 2017 at 74%.
August receives about 5.2 kWh/m²/day of solar energy in Squamish. The sunniest August was 2005 at 6 kWh/m²/day, and the cloudiest were 1995, 2001 and 2008, among others at 4.6.
Average wind speed in Squamish during August is 0.5 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.6 m/s, while the calmest were 2018, 2021 and 2022, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.5°C | 15.9°C | 15.9°C | 16.9°C | 17.1°C | +1.6°C |
| Avg High | 19.6°C | 19.7°C | 19.7°C | 20.8°C | 21.0°C | +1.4°C |
| Avg Low | 11.4°C | 12.1°C | 12.0°C | 13.1°C | 13.1°C | +1.7°C |
| Avg Rain | 44 mm | 77 mm | 69 mm | 50 mm | 73 mm | +30 mm |
August temperatures in Squamish have risen by about 2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 6.5°C (1985) to a record high of 33.4°C (1981).
Rainfall in August is one of the drier months, averaging 62 mm, with a wettest year of 251 mm.
One of the best times to visit Squamish
August is one of the best times to visit Squamish. Expect days averaging 20.1°C and nights around 12.3°C (mean 16.2°C) — warmer than Squamish's yearly average — with moderate rainfall (62 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 | 20.6°C | 16.6°C | 12.6°C | 31.9°C | 9.2°C | 114 mm | 83% | 0.6 m/s | 5.1 |
| 2024 | 20.8°C | 17.0°C | 13.1°C | 27.7°C | 8.8°C | 118 mm | 80% | 0.6 m/s | 4.8 |
| 2023 | 22.1°C | 17.7°C | 13.2°C | 29.3°C | 8.9°C | 49 mm | 77% | 0.6 m/s | 5.2 |
| 2022 🔥 | 23.2°C | 19.0°C | 14.8°C | 31.1°C | 9.9°C | 30 mm | 76% | 0.5 m/s | 5.6 |
| 2021 | 20.4°C | 16.8°C | 13.1°C | 33.4°C | 7.6°C | 48 mm | 79% | 0.5 m/s | 4.9 |
| 2020 | 19.1°C | 15.4°C | 11.7°C | 27.4°C | 8.1°C | 80 mm | 79% | 0.6 m/s | 5.4 |
| 2019 | 20.3°C | 16.7°C | 13.0°C | 26.8°C | 9.0°C | 50 mm | 79% | 0.6 m/s | 5 |
| 2018 | 21.4°C | 17.4°C | 13.5°C | 29.3°C | 7.7°C | 27 mm | 75% | 0.5 m/s | 5.1 |
| 2017 | 22.9°C | 18.5°C | 14.2°C | 32.1°C | 10.2°C | 18 mm | 74% | 0.6 m/s | 5.7 |
| 2016 | 21.1°C | 16.9°C | 12.7°C | 30.5°C | 9.2°C | 34 mm | 78% | 0.6 m/s | 5.4 |
| 2015 | 20.2°C | 16.5°C | 12.8°C | 28.4°C | 9.3°C | 146 mm | 76% | 0.6 m/s | 5.1 |
| 2014 | 21.8°C | 18.1°C | 14.3°C | 31.1°C | 10.9°C | 27 mm | 76% | 0.5 m/s | 5.2 |
| 2013 | 20.1°C | 16.7°C | 13.3°C | 26.3°C | 10.0°C | 96 mm | 82% | 0.5 m/s | 4.7 |
| 2012 | 20.9°C | 16.9°C | 12.9°C | 30.1°C | 8.5°C | 17 mm | 76% | 0.6 m/s | 5.5 |
| 2011 | 19.2°C | 15.6°C | 12.0°C | 24.1°C | 8.2°C | 38 mm | 78% | 0.6 m/s | 5.5 |
| 2010 | 19.8°C | 16.0°C | 12.2°C | 30.2°C | 6.9°C | 50 mm | 77% | 0.6 m/s | 5.1 |
| 2009 | 19.6°C | 15.8°C | 12.1°C | 27.8°C | 8.4°C | 51 mm | 79% | 0.5 m/s | 5 |
| 2008 | 19.4°C | 15.5°C | 11.6°C | 30.7°C | 7.0°C | 168 mm | 78% | 0.6 m/s | 4.6 |
| 2007 | 18.7°C | 15.1°C | 11.6°C | 29.1°C | 9.6°C | 41 mm | 79% | 0.6 m/s | 4.9 |
| 2006 | 19.7°C | 15.7°C | 11.7°C | 24.4°C | 8.8°C | 16 mm | 76% | 0.5 m/s | 5.8 |
| 2005 | 21.3°C | 17.0°C | 12.8°C | 25.9°C | 9.5°C | 43 mm | 74% | 0.5 m/s | 6 |
| 2004 | 21.1°C | 17.5°C | 13.9°C | 28.5°C | 10.4°C | 116 mm | 79% | 0.5 m/s | 4.9 |
| 2003 | 20.5°C | 16.3°C | 12.1°C | 26.5°C | 8.2°C | 13 mm | 75% | 0.5 m/s | 5.6 |
| 2002 | 19.9°C | 15.8°C | 11.7°C | 26.1°C | 8.8°C | 27 mm | 78% | 0.5 m/s | 5.6 |
| 2001 | 19.0°C | 15.5°C | 12.1°C | 28.1°C | 9.1°C | 169 mm | 81% | 0.6 m/s | 4.6 |
| 2000 | 18.1°C | 14.5°C | 10.9°C | 24.1°C | 7.9°C | 49 mm | 81% | 0.5 m/s | 5.5 |
| 1999 | 19.6°C | 16.2°C | 12.7°C | 26.9°C | 8.3°C | 86 mm | 80% | 0.5 m/s | 4.9 |
| 1998 | 20.7°C | 16.7°C | 12.8°C | 27.6°C | 9.2°C | 20 mm | 77% | 0.5 m/s | 5.7 |
| 1997 | 21.0°C | 17.0°C | 13.1°C | 27.9°C | 10.3°C | 83 mm | 78% | 0.5 m/s | 5.4 |
| 1996 | 19.9°C | 15.8°C | 11.6°C | 27.7°C | 8.3°C | 54 mm | 77% | 0.6 m/s | 5 |
| 1995 ❄️ | 16.5°C | 13.2°C | 9.9°C | 22.2°C | 6.8°C | 92 mm | 82% | 0.6 m/s | 4.6 |
| 1994 | 19.8°C | 16.1°C | 12.4°C | 24.8°C | 9.4°C | 33 mm | 75% | 0.6 m/s | 5 |
| 1993 | 19.7°C | 15.7°C | 11.6°C | 30.4°C | 7.7°C | 51 mm | 78% | 0.6 m/s | 4.9 |
| 1992 | 20.4°C | 16.3°C | 12.2°C | 28.0°C | 8.1°C | 46 mm | 76% | 0.5 m/s | 5.4 |
| 1991 🌧️ | 19.0°C | 15.7°C | 12.5°C | 26.7°C | 8.9°C | 251 mm | 84% | 0.5 m/s | 4.9 |
| 1990 | 20.6°C | 16.5°C | 12.5°C | 29.3°C | 8.6°C | 59 mm | 77% | 0.5 m/s | 5.2 |
| 1989 | 18.0°C | 14.5°C | 11.0°C | 23.5°C | 8.8°C | 107 mm | 82% | 0.5 m/s | 4.8 |
| 1988 | 18.8°C | 14.9°C | 11.1°C | 26.7°C | 7.3°C | 50 mm | 79% | 0.5 m/s | 4.8 |
| 1987 | 19.7°C | 15.3°C | 10.9°C | 29.8°C | 7.4°C | 21 mm | 76% | 0.5 m/s | 5.4 |
| 1986 | 22.3°C | 17.6°C | 12.9°C | 30.3°C | 9.7°C | 8 mm | 75% | 0.5 m/s | 5.7 |
| 1985 | 18.6°C | 14.4°C | 10.1°C | 24.3°C | 6.5°C | 30 mm | 75% | 0.5 m/s | 5.2 |
| 1984 | 18.1°C | 14.3°C | 10.5°C | 23.4°C | 7.8°C | 46 mm | 78% | 0.5 m/s | 4.6 |
| 1983 | 19.9°C | 15.7°C | 11.6°C | 30.4°C | 8.8°C | 47 mm | 76% | 0.5 m/s | — |
| 1982 | 18.8°C | 14.9°C | 11.1°C | 28.7°C | 8.1°C | 53 mm | 77% | 0.5 m/s | — |
| 1981 | 22.3°C | 17.8°C | 13.4°C | 33.4°C | 7.4°C | 30 mm | 74% | 0.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 20.1°C with lows near 12.3°C (mean 16.2°C), based on 45 years of NASA POWER data.
August averages 62 mm of rainfall in Squamish, one of the drier months. The wettest on record was 251 mm in 1991.
The hottest August reached 33.4°C in 1981. The coldest dipped to 6.5°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2°C. Daytime highs moved from 19.5°C to 21.4°C and overnight lows from 11.3°C to 13.4°C over the same span.
August is one of the warmer months of the year in Squamish and one of the drier months, so plan for around 20.1°C daytime highs and 12.3°C at night.
Not quite — August is the 12th coolest month in Squamish, averaging 16.2°C.
For August in Squamish, pack light layers you can adjust through the day, with typical highs of 20.1°C and lows of 12.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 78% — quite humid.
Average wind speed in August is 0.5 m/s. The windiest August on record averaged 0.6 m/s (1993).
The wettest August on record was 1991 with 251 mm. On average, August sees 62 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 Squamish 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.
