August is one of the warmer months of the year in Coquitlam, with average highs near 20.1°C and lows around 11°C (mean 15.6°C). It is one of the drier months, averaging 69 mm of rainfall and 79% relative humidity across the period.
August is one of the warmer months of the year in Coquitlam. Across 45 years of records, the warmest August in Coquitlam was 2022 — when the month averaged 18.6°C — while the coldest was 1995 at 12.1°C. Typical August days reach 20.1°C with nights near 11°C. The long-term trend is warming, about 0.4°C per decade.
August is one of the drier months in Coquitlam, averaging 69 mm of rainfall. The wettest August on record was 1991 with 233 mm, while the driest was 1986 at 12 mm.
Relative humidity in Coquitlam during August averages 79%. The most humid August was 1991 at 85%, and the least humid was 2005 at 73%.
August receives about 5.2 kWh/m²/day of solar energy in Coquitlam. 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 Coquitlam during August is 0.4 m/s. The windiest Augusts were 2022, 2023 and 2024, among others at 0.4 m/s, while the calmest were 2009, 2021 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 | 15.1°C | 15.2°C | 15.2°C | 16.2°C | 16.4°C | +1.3°C |
| Avg High | 19.8°C | 19.7°C | 19.7°C | 20.7°C | 21.1°C | +1.3°C |
| Avg Low | 10.4°C | 10.8°C | 10.8°C | 11.6°C | 11.8°C | +1.4°C |
| Avg Rain | 51 mm | 81 mm | 78 mm | 55 mm | 84 mm | +33 mm |
August temperatures in Coquitlam have risen by about 1.7°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.3°C (1995) to a record high of 34.6°C (2021).
Rainfall in August is one of the drier months, averaging 69 mm, with a wettest year of 233 mm.
One of the best times to visit Coquitlam
August is one of the best times to visit Coquitlam. Expect days averaging 20.1°C and nights around 11°C (mean 15.6°C) — warmer than Coquitlam's yearly average — with moderate rainfall (69 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 | 16.0°C | 11.5°C | 31.5°C | 7.1°C | 127 mm | 84% | 0.3 m/s | 5.1 |
| 2024 | 21.2°C | 16.5°C | 11.8°C | 32.1°C | 7.1°C | 134 mm | 79% | 0.4 m/s | 4.8 |
| 2023 | 22.2°C | 17.0°C | 11.9°C | 33.5°C | 7.0°C | 67 mm | 78% | 0.4 m/s | 5.2 |
| 2022 🔥 | 23.7°C | 18.6°C | 13.5°C | 33.8°C | 7.7°C | 36 mm | 76% | 0.4 m/s | 5.6 |
| 2021 | 19.9°C | 15.7°C | 11.5°C | 34.6°C | 5.8°C | 67 mm | 83% | 0.3 m/s | 4.9 |
| 2020 | 18.8°C | 14.6°C | 10.4°C | 29.7°C | 7.1°C | 76 mm | 81% | 0.4 m/s | 5.4 |
| 2019 | 20.1°C | 15.8°C | 11.5°C | 26.4°C | 7.1°C | 51 mm | 80% | 0.4 m/s | 5 |
| 2018 | 21.1°C | 16.5°C | 11.9°C | 30.8°C | 5.6°C | 32 mm | 77% | 0.4 m/s | 5.1 |
| 2017 | 23.2°C | 18.0°C | 12.8°C | 33.5°C | 9.1°C | 19 mm | 74% | 0.4 m/s | 5.7 |
| 2016 | 20.9°C | 16.1°C | 11.2°C | 30.0°C | 6.7°C | 36 mm | 78% | 0.4 m/s | 5.4 |
| 2015 | 20.5°C | 16.1°C | 11.7°C | 33.7°C | 7.6°C | 167 mm | 75% | 0.4 m/s | 5.1 |
| 2014 | 21.9°C | 17.4°C | 12.8°C | 31.8°C | 8.7°C | 35 mm | 78% | 0.4 m/s | 5.2 |
| 2013 | 20.1°C | 16.1°C | 12.1°C | 26.6°C | 8.5°C | 92 mm | 82% | 0.4 m/s | 4.7 |
| 2012 | 20.8°C | 16.1°C | 11.3°C | 30.3°C | 6.2°C | 18 mm | 77% | 0.4 m/s | 5.5 |
| 2011 | 18.9°C | 14.7°C | 10.5°C | 24.4°C | 6.0°C | 38 mm | 80% | 0.4 m/s | 5.5 |
| 2010 | 19.5°C | 15.0°C | 10.5°C | 31.0°C | 4.6°C | 59 mm | 79% | 0.4 m/s | 5.1 |
| 2009 | 19.6°C | 15.2°C | 10.7°C | 31.1°C | 6.2°C | 54 mm | 81% | 0.3 m/s | 5 |
| 2008 | 19.5°C | 14.9°C | 10.4°C | 33.3°C | 6.2°C | 204 mm | 80% | 0.4 m/s | 4.6 |
| 2007 | 18.4°C | 14.1°C | 9.9°C | 29.2°C | 7.5°C | 46 mm | 81% | 0.4 m/s | 4.9 |
| 2006 | 19.7°C | 15.1°C | 10.4°C | 26.7°C | 7.7°C | 25 mm | 76% | 0.4 m/s | 5.8 |
| 2005 | 21.8°C | 16.8°C | 11.8°C | 29.7°C | 8.0°C | 46 mm | 73% | 0.4 m/s | 6 |
| 2004 | 21.3°C | 17.0°C | 12.8°C | 31.5°C | 8.3°C | 133 mm | 80% | 0.4 m/s | 4.9 |
| 2003 | 20.6°C | 15.7°C | 10.8°C | 28.9°C | 6.1°C | 15 mm | 76% | 0.4 m/s | 5.6 |
| 2002 | 19.8°C | 15.2°C | 10.5°C | 28.2°C | 6.3°C | 35 mm | 79% | 0.4 m/s | 5.6 |
| 2001 | 18.8°C | 14.9°C | 10.9°C | 28.9°C | 8.1°C | 158 mm | 82% | 0.4 m/s | 4.6 |
| 2000 | 17.6°C | 13.5°C | 9.4°C | 25.7°C | 6.1°C | 65 mm | 83% | 0.4 m/s | 5.5 |
| 1999 | 19.8°C | 15.6°C | 11.5°C | 27.6°C | 6.7°C | 97 mm | 81% | 0.3 m/s | 4.9 |
| 1998 | 20.6°C | 15.9°C | 11.3°C | 29.3°C | 5.7°C | 22 mm | 79% | 0.4 m/s | 5.7 |
| 1997 | 21.1°C | 16.4°C | 11.7°C | 27.9°C | 7.9°C | 76 mm | 78% | 0.4 m/s | 5.4 |
| 1996 | 20.2°C | 15.3°C | 10.4°C | 32.1°C | 7.4°C | 72 mm | 77% | 0.4 m/s | 5 |
| 1995 ❄️ | 15.9°C | 12.1°C | 8.3°C | 21.5°C | 4.3°C | 93 mm | 84% | 0.4 m/s | 4.6 |
| 1994 | 19.5°C | 15.1°C | 10.7°C | 27.3°C | 7.2°C | 30 mm | 77% | 0.4 m/s | 5 |
| 1993 | 19.6°C | 14.8°C | 10.1°C | 31.3°C | 6.1°C | 57 mm | 79% | 0.4 m/s | 4.9 |
| 1992 | 20.8°C | 15.9°C | 11.0°C | 29.8°C | 7.0°C | 52 mm | 75% | 0.4 m/s | 5.4 |
| 1991 🌧️ | 18.9°C | 15.2°C | 11.5°C | 25.2°C | 6.8°C | 233 mm | 85% | 0.3 m/s | 4.9 |
| 1990 | 20.9°C | 16.1°C | 11.4°C | 31.8°C | 5.6°C | 81 mm | 78% | 0.4 m/s | 5.2 |
| 1989 | 17.9°C | 13.9°C | 9.8°C | 24.8°C | 6.7°C | 134 mm | 83% | 0.4 m/s | 4.8 |
| 1988 | 18.9°C | 14.5°C | 10.0°C | 29.2°C | 6.4°C | 53 mm | 81% | 0.4 m/s | 4.8 |
| 1987 | 19.9°C | 15.0°C | 10.1°C | 30.3°C | 5.8°C | 23 mm | 77% | 0.4 m/s | 5.4 |
| 1986 | 22.9°C | 17.5°C | 12.1°C | 33.9°C | 8.5°C | 12 mm | 74% | 0.4 m/s | 5.7 |
| 1985 | 18.7°C | 13.9°C | 9.0°C | 26.0°C | 5.5°C | 30 mm | 75% | 0.4 m/s | 5.2 |
| 1984 | 18.1°C | 13.8°C | 9.4°C | 24.1°C | 5.5°C | 64 mm | 79% | 0.4 m/s | 4.6 |
| 1983 | 20.1°C | 15.5°C | 10.9°C | 31.3°C | 7.9°C | 56 mm | 77% | 0.4 m/s | — |
| 1982 | 19.0°C | 14.5°C | 10.1°C | 30.2°C | 6.9°C | 63 mm | 77% | 0.4 m/s | — |
| 1981 | 22.9°C | 17.6°C | 12.4°C | 34.1°C | 4.9°C | 27 mm | 75% | 0.4 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 11°C (mean 15.6°C), based on 45 years of NASA POWER data.
August averages 69 mm of rainfall in Coquitlam, one of the drier months. The wettest on record was 233 mm in 1991.
The hottest August reached 34.6°C in 2021. The coldest dipped to 4.3°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.7°C. Daytime highs moved from 19.8°C to 21.5°C and overnight lows from 10.4°C to 12°C over the same span.
August is one of the warmer months of the year in Coquitlam and one of the drier months, so plan for around 20.1°C daytime highs and 11°C at night.
Not quite — August is the 12th coolest month in Coquitlam, averaging 15.6°C.
For August in Coquitlam, pack light layers you can adjust through the day, with typical highs of 20.1°C and lows of 11°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 79% — quite humid.
Average wind speed in August is 0.4 m/s. The windiest August on record averaged 0.4 m/s (1981).
The wettest August on record was 1991 with 233 mm. On average, August sees 69 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 Coquitlam 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.
