September is one of the warmer months of the year in Sooke, with average highs near 18°C and lows around 10.7°C (mean 14.4°C). It is one of the drier months, averaging 58 mm of rainfall and 79% relative humidity across the period.
September is one of the warmer months of the year in Sooke. Across 45 years of records, the warmest Septembers in Sooke were 1990 and 1995 — when the month averaged 16.2°C — while the coldest was 1983 at 12.5°C. Typical September days reach 18°C with nights near 10.7°C. The long-term September temperature trend is broadly flat.
September is one of the drier months in Sooke, averaging 58 mm of rainfall. The wettest September on record was 1997 with 147 mm, while the driest was 1991 at 3 mm.
Relative humidity in Sooke during September averages 79%. The most humid September was 2025 at 88%, and the least humid was 1993 at 72%.
September receives about 4 kWh/m²/day of solar energy in Sooke. The sunniest Septembers were 1989, 1999 and 2012 at 4.6 kWh/m²/day, and the cloudiest was 2019 at 3.3.
Average wind speed in Sooke during September is 1.1 m/s. The windiest September was 1992 at 1.5 m/s, while the calmest were 2008, 2012 and 2024, among others at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.7°C | 14.9°C | 14.1°C | 14.4°C | 14.5°C | +0.8°C |
| Avg High | 17.4°C | 18.7°C | 17.7°C | 17.9°C | 18.0°C | +0.6°C |
| Avg Low | 10.0°C | 11.0°C | 10.5°C | 10.9°C | 11.1°C | +1.1°C |
| Avg Rain | 58 mm | 40 mm | 49 mm | 76 mm | 69 mm | +11 mm |
September temperatures in Sooke have risen by about 1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 4.8°C (1983) to a record high of 27.8°C (2017).
Rainfall in September is one of the drier months, averaging 58 mm, with a wettest year of 147 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
One of the best times to visit Sooke
September is one of the best times to visit Sooke. Expect days averaging 18°C and nights around 10.7°C (mean 14.4°C) — warmer than Sooke's yearly average — with moderate rainfall (58 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 | 17.6°C | 14.4°C | 11.2°C | 23.1°C | 8.7°C | 80 mm | 88% | 1 m/s | 3.9 |
| 2024 | 17.3°C | 14.0°C | 10.8°C | 25.3°C | 6.3°C | 59 mm | 84% | 0.9 m/s | 3.8 |
| 2023 | 17.6°C | 14.1°C | 10.6°C | 24.0°C | 6.9°C | 58 mm | 81% | 1.2 m/s | 4 |
| 2022 | 19.3°C | 15.4°C | 11.5°C | 23.5°C | 9.6°C | 11 mm | 78% | 1 m/s | 4.4 |
| 2021 | 16.7°C | 13.6°C | 10.5°C | 22.5°C | 7.3°C | 130 mm | 84% | 1.2 m/s | 3.6 |
| 2020 | 19.3°C | 15.7°C | 12.1°C | 27.6°C | 9.3°C | 77 mm | 81% | 1 m/s | 3.7 |
| 2019 | 17.1°C | 14.1°C | 11.1°C | 23.5°C | 5.5°C | 102 mm | 84% | 1.2 m/s | 3.3 |
| 2018 | 16.6°C | 13.5°C | 10.4°C | 23.6°C | 7.3°C | 95 mm | 83% | 1.1 m/s | 3.7 |
| 2017 | 18.8°C | 15.3°C | 11.8°C | 27.8°C | 8.3°C | 45 mm | 79% | 1 m/s | 3.8 |
| 2016 | 16.8°C | 13.5°C | 10.3°C | 21.9°C | 7.4°C | 59 mm | 82% | 1.1 m/s | 4 |
| 2015 | 16.8°C | 13.4°C | 10.0°C | 24.3°C | 6.4°C | 75 mm | 82% | 1.1 m/s | 3.8 |
| 2014 | 19.4°C | 15.5°C | 11.7°C | 26.6°C | 9.6°C | 62 mm | 76% | 1.1 m/s | 4.1 |
| 2013 | 18.3°C | 15.0°C | 11.7°C | 26.5°C | 7.9°C | 132 mm | 83% | 1.1 m/s | 3.4 |
| 2012 | 19.2°C | 14.8°C | 10.4°C | 23.9°C | 7.6°C | 11 mm | 75% | 0.9 m/s | 4.6 |
| 2011 | 19.0°C | 15.2°C | 11.4°C | 26.2°C | 8.5°C | 59 mm | 79% | 1.1 m/s | 4 |
| 2010 | 16.7°C | 13.7°C | 10.6°C | 21.3°C | 8.3°C | 120 mm | 85% | 1 m/s | 3.4 |
| 2009 | 18.3°C | 14.5°C | 10.6°C | 25.8°C | 6.5°C | 59 mm | 77% | 1.1 m/s | 4.1 |
| 2008 | 18.2°C | 14.3°C | 10.4°C | 23.7°C | 8.0°C | 21 mm | 76% | 0.9 m/s | 4.1 |
| 2007 | 16.9°C | 13.5°C | 10.2°C | 23.9°C | 7.0°C | 56 mm | 81% | 1.1 m/s | 3.7 |
| 2006 | 18.7°C | 14.7°C | 10.6°C | 27.0°C | 8.3°C | 39 mm | 76% | 1.1 m/s | 4.3 |
| 2005 | 16.8°C | 13.4°C | 10.0°C | 20.8°C | 7.4°C | 54 mm | 81% | 1.1 m/s | 4.2 |
| 2004 | 16.3°C | 13.4°C | 10.4°C | 19.6°C | 8.3°C | 83 mm | 85% | 1.1 m/s | 3.6 |
| 2003 | 18.9°C | 15.0°C | 11.2°C | 26.8°C | 8.9°C | 41 mm | 78% | 1 m/s | 4.2 |
| 2002 | 17.8°C | 14.0°C | 10.2°C | 23.2°C | 6.7°C | 39 mm | 78% | 1.1 m/s | 4.2 |
| 2001 | 18.0°C | 14.3°C | 10.6°C | 24.2°C | 8.2°C | 44 mm | 81% | 1.1 m/s | 3.9 |
| 2000 | 17.4°C | 14.1°C | 10.9°C | 24.2°C | 7.7°C | 59 mm | 78% | 1.1 m/s | 3.8 |
| 1999 | 17.8°C | 13.8°C | 9.8°C | 23.3°C | 6.1°C | 20 mm | 77% | 1.2 m/s | 4.6 |
| 1998 | 19.4°C | 15.4°C | 11.3°C | 22.7°C | 8.7°C | 17 mm | 78% | 1.1 m/s | 4.5 |
| 1997 🌧️ | 18.3°C | 15.2°C | 12.1°C | 24.2°C | 9.2°C | 147 mm | 82% | 1.2 m/s | 3.8 |
| 1996 | 16.4°C | 13.2°C | 9.9°C | 21.4°C | 6.0°C | 61 mm | 81% | 1.1 m/s | 3.7 |
| 1995 | 20.1°C | 16.2°C | 12.3°C | 26.6°C | 9.8°C | 37 mm | 75% | 0.9 m/s | 4.4 |
| 1994 | 19.3°C | 15.5°C | 11.8°C | 23.1°C | 8.9°C | 52 mm | 78% | 0.9 m/s | 4 |
| 1993 | 19.8°C | 15.3°C | 10.8°C | 26.4°C | 6.9°C | 5 mm | 72% | 0.9 m/s | 4.5 |
| 1992 | 16.4°C | 13.0°C | 9.5°C | 21.6°C | 6.2°C | 48 mm | 79% | 1.5 m/s | 4 |
| 1991 | 19.1°C | 15.1°C | 11.0°C | 24.5°C | 7.5°C | 3 mm | 77% | 0.9 m/s | 4.4 |
| 1990 🔥 | 20.6°C | 16.2°C | 11.8°C | 26.1°C | 9.0°C | 11 mm | 75% | 0.9 m/s | 4.2 |
| 1989 | 19.7°C | 15.2°C | 10.8°C | 24.5°C | 8.6°C | 6 mm | 72% | 0.9 m/s | 4.6 |
| 1988 | 17.8°C | 13.8°C | 9.9°C | 27.6°C | 7.5°C | 77 mm | 77% | 1.1 m/s | 3.8 |
| 1987 | 19.4°C | 15.1°C | 10.8°C | 24.9°C | 8.0°C | 21 mm | 76% | 1 m/s | 4.1 |
| 1986 | 16.4°C | 13.0°C | 9.7°C | 22.5°C | 7.3°C | 57 mm | 80% | 1.2 m/s | 3.7 |
| 1985 | 16.2°C | 12.8°C | 9.3°C | 20.1°C | 7.4°C | 53 mm | 76% | 1.2 m/s | 3.9 |
| 1984 | 15.7°C | 12.6°C | 9.4°C | 19.7°C | 6.5°C | 70 mm | 80% | 1.2 m/s | 3.6 |
| 1983 ❄️ | 15.9°C | 12.5°C | 9.1°C | 20.7°C | 4.8°C | 87 mm | 79% | 1.4 m/s | — |
| 1982 | 18.3°C | 14.6°C | 10.9°C | 24.9°C | 7.9°C | 40 mm | 78% | 1 m/s | — |
| 1981 | 17.6°C | 14.0°C | 10.4°C | 25.7°C | 6.6°C | 113 mm | 80% | 1.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 18°C with lows near 10.7°C (mean 14.4°C), based on 45 years of NASA POWER data.
September averages 58 mm of rainfall in Sooke, one of the drier months. The wettest on record was 147 mm in 1997.
The hottest September reached 27.8°C in 2017. The coldest dipped to 4.8°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1°C. Daytime highs moved from 16.7°C to 17.7°C and overnight lows from 9.8°C to 10.9°C over the same span.
September is one of the warmer months of the year in Sooke and one of the drier months, so plan for around 18°C daytime highs and 10.7°C at night.
Not quite — September is the 10th coolest month in Sooke, averaging 14.4°C.
For September in Sooke, pack light layers you can adjust through the day, with typical highs of 18°C and lows of 10.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 79% — quite humid.
Average wind speed in September is 1.1 m/s. The windiest September on record averaged 1.5 m/s (1992).
The wettest September on record was 1997 with 147 mm. On average, September sees 58 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 Sooke behaves each September, 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 September specifically, along with year-by-year records and how the month has changed over the decades.
