August is one of the warmer months of the year in Oak Bay, with average highs near 21.1°C and lows around 13.7°C (mean 17.4°C). It is one of the drier months, averaging 29 mm of rainfall and 74% relative humidity across the period.
August is one of the warmer months of the year in Oak Bay. Across 45 years of records, the warmest Augusts in Oak Bay were 1981 and 2022 — when the month averaged 18.8°C — while the coldest was 1995 at 15.4°C. Typical August days reach 21.1°C with nights near 13.7°C. The long-term August temperature trend is broadly flat.
August is one of the drier months in Oak Bay, averaging 29 mm of rainfall. The wettest August on record was 2004 with 94 mm, while the driest was 1986 at 2 mm.
Relative humidity in Oak Bay during August averages 74%. The most humid August was 2025 at 83%, and the least humid was 1985 at 68%.
August receives about 5.5 kWh/m²/day of solar energy in Oak Bay. The sunniest Augusts were 1998 and 2006 at 6.1 kWh/m²/day, and the cloudiest were 1991 and 1995 at 4.9.
Average wind speed in Oak Bay during August is 1.7 m/s. The windiest Augusts were 1991 and 2021 at 2.1 m/s, while the calmest were 1992, 2008 and 2009, among others at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.1°C | 17.5°C | 17.2°C | 17.7°C | 17.4°C | +0.3°C |
| Avg High | 21.0°C | 21.1°C | 21.0°C | 21.5°C | 21.0°C | 0°C |
| Avg Low | 13.1°C | 14.0°C | 13.5°C | 13.9°C | 13.8°C | +0.7°C |
| Avg Rain | 22 mm | 36 mm | 31 mm | 23 mm | 37 mm | +16 mm |
August temperatures in Oak Bay have risen by about 0.5°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 9.7°C (2008) to a record high of 33.6°C (1981).
Rainfall in August is one of the drier months, averaging 29 mm, with a wettest year of 94 mm.
One of the best times to visit Oak Bay
August is one of the best times to visit Oak Bay. Expect days averaging 21.1°C and nights around 13.7°C (mean 17.4°C) — warmer than Oak Bay's yearly average — with low rainfall (29 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 | 19.4°C | 16.2°C | 13.0°C | 25.6°C | 11.0°C | 66 mm | 83% | 1.6 m/s | 5.4 |
| 2024 | 20.4°C | 16.9°C | 13.5°C | 25.9°C | 10.7°C | 75 mm | 79% | 1.6 m/s | 5 |
| 2023 | 21.7°C | 18.0°C | 14.2°C | 28.1°C | 12.1°C | 28 mm | 76% | 1.9 m/s | 5.5 |
| 2022 | 22.6°C | 18.8°C | 15.0°C | 27.0°C | 12.6°C | 11 mm | 76% | 1.7 m/s | 6 |
| 2021 | 21.1°C | 17.5°C | 14.0°C | 27.8°C | 11.2°C | 15 mm | 75% | 2.1 m/s | 5.3 |
| 2020 | 20.6°C | 16.9°C | 13.2°C | 29.8°C | 11.2°C | 30 mm | 76% | 1.9 m/s | 5.9 |
| 2019 | 21.5°C | 17.8°C | 14.2°C | 26.3°C | 12.2°C | 22 mm | 74% | 1.7 m/s | 5.3 |
| 2018 | 21.7°C | 18.0°C | 14.2°C | 28.9°C | 11.5°C | 12 mm | 72% | 1.7 m/s | 5.3 |
| 2017 | 22.2°C | 18.3°C | 14.4°C | 28.1°C | 11.7°C | 11 mm | 75% | 1.9 m/s | 5.9 |
| 2016 | 22.1°C | 18.3°C | 14.5°C | 29.8°C | 12.1°C | 14 mm | 73% | 1.8 m/s | 5.8 |
| 2015 | 21.7°C | 18.1°C | 14.5°C | 28.4°C | 12.2°C | 45 mm | 72% | 2 m/s | 5.4 |
| 2014 | 22.3°C | 18.4°C | 14.4°C | 27.6°C | 12.6°C | 46 mm | 74% | 1.8 m/s | 5.5 |
| 2013 | 21.3°C | 17.5°C | 13.8°C | 25.9°C | 11.5°C | 34 mm | 77% | 1.6 m/s | 5 |
| 2012 | 21.4°C | 17.6°C | 13.7°C | 30.0°C | 10.7°C | 4 mm | 73% | 1.6 m/s | 5.5 |
| 2011 | 20.0°C | 16.3°C | 12.6°C | 24.2°C | 10.7°C | 9 mm | 76% | 1.9 m/s | 5.7 |
| 2010 | 20.8°C | 16.9°C | 13.1°C | 29.2°C | 10.6°C | 29 mm | 73% | 1.8 m/s | 5.4 |
| 2009 | 20.6°C | 16.9°C | 13.2°C | 26.9°C | 11.2°C | 21 mm | 73% | 1.5 m/s | 5.2 |
| 2008 | 20.2°C | 16.7°C | 13.2°C | 26.4°C | 9.7°C | 62 mm | 74% | 1.5 m/s | 5 |
| 2007 | 19.9°C | 16.6°C | 13.3°C | 24.4°C | 11.6°C | 14 mm | 75% | 1.6 m/s | 5.2 |
| 2006 | 21.0°C | 17.0°C | 13.0°C | 24.6°C | 11.5°C | 4 mm | 72% | 1.9 m/s | 6.1 |
| 2005 | 21.9°C | 17.9°C | 13.8°C | 26.9°C | 11.8°C | 26 mm | 72% | 1.7 m/s | 6 |
| 2004 🌧️ | 22.1°C | 18.3°C | 14.5°C | 28.9°C | 13.1°C | 94 mm | 75% | 1.8 m/s | 5.2 |
| 2003 | 21.9°C | 18.1°C | 14.3°C | 25.0°C | 11.6°C | 10 mm | 71% | 1.9 m/s | 5.8 |
| 2002 | 21.2°C | 17.1°C | 13.1°C | 27.9°C | 11.2°C | 6 mm | 73% | 1.9 m/s | 5.9 |
| 2001 | 21.0°C | 17.4°C | 13.7°C | 27.3°C | 11.8°C | 51 mm | 76% | 1.7 m/s | 5 |
| 2000 | 19.9°C | 16.4°C | 12.9°C | 24.8°C | 11.0°C | 19 mm | 75% | 1.8 m/s | 5.7 |
| 1999 | 20.5°C | 17.3°C | 14.0°C | 24.1°C | 10.9°C | 50 mm | 79% | 1.6 m/s | 5.2 |
| 1998 | 21.8°C | 17.9°C | 14.0°C | 27.4°C | 12.1°C | 4 mm | 75% | 2 m/s | 6.1 |
| 1997 | 22.1°C | 18.6°C | 15.0°C | 26.3°C | 12.8°C | 34 mm | 74% | 1.6 m/s | 5.7 |
| 1996 | 20.4°C | 16.9°C | 13.4°C | 27.3°C | 11.5°C | 17 mm | 75% | 1.8 m/s | 5.5 |
| 1995 ❄️ | 18.4°C | 15.4°C | 12.4°C | 23.0°C | 10.8°C | 59 mm | 76% | 1.8 m/s | 4.9 |
| 1994 | 21.6°C | 17.9°C | 14.2°C | 25.6°C | 12.7°C | 13 mm | 71% | 1.6 m/s | 5.4 |
| 1993 | 21.1°C | 17.5°C | 14.0°C | 30.7°C | 11.3°C | 18 mm | 74% | 1.7 m/s | 5.1 |
| 1992 | 21.8°C | 17.9°C | 14.0°C | 27.6°C | 11.7°C | 26 mm | 70% | 1.5 m/s | 5.5 |
| 1991 | 20.9°C | 17.6°C | 14.2°C | 26.2°C | 11.4°C | 90 mm | 78% | 2.1 m/s | 4.9 |
| 1990 | 22.3°C | 18.3°C | 14.3°C | 28.5°C | 11.9°C | 46 mm | 71% | 1.5 m/s | 5.2 |
| 1989 | 20.2°C | 16.6°C | 13.1°C | 23.8°C | 11.6°C | 45 mm | 76% | 1.8 m/s | 5.1 |
| 1988 | 20.4°C | 16.5°C | 12.6°C | 26.6°C | 11.1°C | 19 mm | 73% | 1.7 m/s | 5.3 |
| 1987 | 21.1°C | 16.9°C | 12.7°C | 26.3°C | 10.6°C | 13 mm | 71% | 1.8 m/s | 5.7 |
| 1986 | 22.9°C | 18.5°C | 14.1°C | 27.9°C | 11.9°C | 2 mm | 71% | 1.7 m/s | 5.8 |
| 1985 | 20.8°C | 16.7°C | 12.6°C | 26.4°C | 10.7°C | 16 mm | 68% | 1.7 m/s | 5.6 |
| 1984 | 19.8°C | 16.1°C | 12.4°C | 24.6°C | 10.0°C | 25 mm | 73% | 1.7 m/s | 5.3 |
| 1983 | 20.9°C | 17.0°C | 13.2°C | 24.4°C | 11.8°C | 28 mm | 73% | 1.9 m/s | — |
| 1982 | 20.3°C | 16.6°C | 12.9°C | 25.8°C | 9.9°C | 28 mm | 72% | 1.6 m/s | — |
| 1981 🔥 | 22.9°C | 18.8°C | 14.7°C | 33.6°C | 11.6°C | 18 mm | 70% | 1.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.1°C with lows near 13.7°C (mean 17.4°C), based on 45 years of NASA POWER data.
August averages 29 mm of rainfall in Oak Bay, one of the drier months. The wettest on record was 94 mm in 2004.
The hottest August reached 33.6°C in 1981. The coldest dipped to 9.7°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.5°C. Daytime highs moved from 20.9°C to 21°C and overnight lows from 13.2°C to 13.9°C over the same span.
August is one of the warmer months of the year in Oak Bay and one of the drier months, so plan for around 21.1°C daytime highs and 13.7°C at night.
Not quite — August is the 12th coolest month in Oak Bay, averaging 17.4°C.
For August in Oak Bay, pack light layers you can adjust through the day, with typical highs of 21.1°C and lows of 13.7°C.
Relative humidity in August averages 74% — moderately humid.
Average wind speed in August is 1.7 m/s. The windiest August on record averaged 2.1 m/s (1991).
The wettest August on record was 2004 with 94 mm. On average, August sees 29 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 Oak Bay 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.
