September is one of the warmer months of the year in Vancouver, with average highs near 16.9°C and lows around 9.3°C (mean 13.1°C). It is one of the drier months, averaging 105 mm of rainfall and 80% relative humidity across the period.
September is one of the warmer months of the year in Vancouver. Across 45 years of records, the warmest September in Vancouver was 2020 — when the month averaged 15.2°C — while the coldest was 1992 at 10.7°C. Typical September days reach 16.9°C with nights near 9.3°C. The long-term trend is warming, about 0.3°C per decade.
September is one of the drier months in Vancouver, averaging 105 mm of rainfall. The wettest September on record was 2021 with 255 mm, while the driest were 1991 and 1993 at 10 mm.
Relative humidity in Vancouver during September averages 80%. The most humid September was 2025 at 87%, and the least humid was 1989 at 73%.
September receives about 3.7 kWh/m²/day of solar energy in Vancouver. The sunniest September was 1993 at 4.6 kWh/m²/day, and the cloudiest was 2019 at 3.
Average wind speed in Vancouver during September is 0.6 m/s. The windiest Septembers were 2022, 2023 and 2025, among others at 0.7 m/s, while the calmest were 2017, 2020 and 2024, among others at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.2°C | 13.6°C | 12.8°C | 13.2°C | 14.0°C | +1.8°C |
| Avg High | 16.3°C | 17.7°C | 16.5°C | 16.8°C | 17.6°C | +1.3°C |
| Avg Low | 8.2°C | 9.5°C | 9.1°C | 9.7°C | 10.4°C | +2.2°C |
| Avg Rain | 89 mm | 71 mm | 98 mm | 145 mm | 133 mm | +44 mm |
September temperatures in Vancouver have risen by about 2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 1.8°C (1983) to a record high of 31.3°C (2011).
Rainfall in September is one of the drier months, averaging 105 mm, with a wettest year of 255 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Vancouver
September is one of the best times to visit Vancouver. Expect days averaging 16.9°C and nights around 9.3°C (mean 13.1°C) — warmer than Vancouver's yearly average — with higher rainfall (105 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 | 18.1°C | 14.8°C | 11.5°C | 26.7°C | 7.0°C | 162 mm | 87% | 0.7 m/s | 3.7 |
| 2024 | 16.8°C | 13.3°C | 9.9°C | 29.9°C | 2.5°C | 108 mm | 84% | 0.6 m/s | 3.5 |
| 2023 | 16.7°C | 13.1°C | 9.5°C | 23.3°C | 4.1°C | 101 mm | 80% | 0.7 m/s | 3.6 |
| 2022 | 19.3°C | 15.0°C | 10.7°C | 25.9°C | 6.9°C | 26 mm | 77% | 0.7 m/s | 4.2 |
| 2021 🌧️ | 15.4°C | 12.4°C | 9.4°C | 24.0°C | 4.9°C | 255 mm | 85% | 0.7 m/s | 3.1 |
| 2020 🔥 | 19.0°C | 15.2°C | 11.4°C | 27.9°C | 7.0°C | 147 mm | 83% | 0.6 m/s | 3.5 |
| 2019 | 15.7°C | 12.7°C | 9.8°C | 25.7°C | 2.8°C | 194 mm | 85% | 0.7 m/s | 3 |
| 2018 | 15.1°C | 12.0°C | 8.9°C | 23.2°C | 5.9°C | 224 mm | 85% | 0.7 m/s | 3.2 |
| 2017 | 17.9°C | 14.2°C | 10.6°C | 27.8°C | 5.0°C | 63 mm | 79% | 0.6 m/s | 3.6 |
| 2016 | 15.3°C | 11.9°C | 8.4°C | 20.5°C | 5.0°C | 95 mm | 83% | 0.7 m/s | 3.6 |
| 2015 | 15.0°C | 11.5°C | 8.1°C | 25.0°C | 3.6°C | 143 mm | 82% | 0.7 m/s | 3.4 |
| 2014 | 18.7°C | 14.6°C | 10.5°C | 26.9°C | 6.6°C | 104 mm | 78% | 0.7 m/s | 3.8 |
| 2013 | 17.5°C | 14.1°C | 10.7°C | 27.0°C | 4.3°C | 236 mm | 84% | 0.7 m/s | 3.3 |
| 2012 | 19.3°C | 14.6°C | 10.0°C | 27.6°C | 5.0°C | 20 mm | 75% | 0.6 m/s | 4.3 |
| 2011 | 18.4°C | 14.6°C | 10.8°C | 31.3°C | 7.0°C | 147 mm | 78% | 0.7 m/s | 3.6 |
| 2010 | 15.5°C | 12.2°C | 8.9°C | 21.2°C | 4.8°C | 221 mm | 86% | 0.6 m/s | 3.2 |
| 2009 | 17.2°C | 13.5°C | 9.8°C | 25.9°C | 4.2°C | 118 mm | 79% | 0.7 m/s | 3.7 |
| 2008 | 17.6°C | 13.3°C | 9.0°C | 28.1°C | 5.3°C | 35 mm | 78% | 0.7 m/s | 3.9 |
| 2007 | 15.3°C | 12.0°C | 8.7°C | 25.8°C | 3.5°C | 119 mm | 83% | 0.6 m/s | 3.5 |
| 2006 | 18.0°C | 14.1°C | 10.3°C | 28.8°C | 5.4°C | 67 mm | 77% | 0.6 m/s | 4.2 |
| 2005 | 14.9°C | 11.6°C | 8.3°C | 19.4°C | 4.1°C | 106 mm | 83% | 0.6 m/s | 3.6 |
| 2004 | 14.9°C | 11.8°C | 8.7°C | 20.4°C | 5.4°C | 154 mm | 86% | 0.6 m/s | 3.1 |
| 2003 | 17.9°C | 13.8°C | 9.6°C | 28.8°C | 6.5°C | 82 mm | 79% | 0.6 m/s | 4 |
| 2002 | 16.5°C | 12.5°C | 8.5°C | 23.5°C | 5.1°C | 88 mm | 78% | 0.6 m/s | 3.8 |
| 2001 | 16.6°C | 13.0°C | 9.4°C | 23.2°C | 5.9°C | 84 mm | 81% | 0.6 m/s | 3.8 |
| 2000 | 15.8°C | 12.3°C | 8.8°C | 25.1°C | 2.7°C | 125 mm | 80% | 0.6 m/s | 3.6 |
| 1999 | 17.4°C | 12.8°C | 8.3°C | 25.0°C | 3.2°C | 59 mm | 74% | 0.7 m/s | 4.2 |
| 1998 | 18.4°C | 14.5°C | 10.5°C | 24.5°C | 6.5°C | 23 mm | 78% | 0.6 m/s | 4.2 |
| 1997 | 17.7°C | 14.1°C | 10.5°C | 27.6°C | 5.1°C | 211 mm | 80% | 0.7 m/s | 3.6 |
| 1996 | 14.8°C | 11.5°C | 8.2°C | 22.9°C | 2.6°C | 119 mm | 82% | 0.6 m/s | 3.2 |
| 1995 | 19.3°C | 14.9°C | 10.4°C | 25.8°C | 6.5°C | 47 mm | 75% | 0.7 m/s | 4.2 |
| 1994 | 18.0°C | 14.2°C | 10.4°C | 25.3°C | 6.8°C | 83 mm | 80% | 0.6 m/s | 3.7 |
| 1993 | 18.7°C | 14.1°C | 9.6°C | 27.4°C | 4.2°C | 10 mm | 74% | 0.6 m/s | 4.6 |
| 1992 ❄️ | 14.3°C | 10.7°C | 7.1°C | 20.1°C | 2.2°C | 113 mm | 81% | 0.7 m/s | 3.5 |
| 1991 | 18.8°C | 14.2°C | 9.7°C | 25.3°C | 6.7°C | 10 mm | 76% | 0.6 m/s | 4.3 |
| 1990 | 19.8°C | 15.1°C | 10.4°C | 24.9°C | 7.2°C | 33 mm | 74% | 0.6 m/s | 4.1 |
| 1989 | 19.2°C | 14.3°C | 9.4°C | 25.5°C | 6.9°C | 18 mm | 73% | 0.6 m/s | 4.4 |
| 1988 | 16.3°C | 12.2°C | 8.1°C | 29.0°C | 3.5°C | 121 mm | 79% | 0.6 m/s | 3.6 |
| 1987 | 18.6°C | 14.2°C | 9.7°C | 25.9°C | 5.9°C | 39 mm | 75% | 0.6 m/s | 3.9 |
| 1986 | 14.7°C | 11.0°C | 7.4°C | 20.7°C | 2.1°C | 97 mm | 82% | 0.6 m/s | 3.6 |
| 1985 | 14.9°C | 10.9°C | 6.9°C | 20.0°C | 4.1°C | 88 mm | 79% | 0.7 m/s | 3.6 |
| 1984 | 14.7°C | 10.9°C | 7.0°C | 19.3°C | 2.7°C | 115 mm | 78% | 0.7 m/s | 3.4 |
| 1983 | 14.8°C | 10.9°C | 7.1°C | 21.4°C | 1.8°C | 100 mm | 79% | 0.7 m/s | — |
| 1982 | 17.0°C | 13.2°C | 9.4°C | 24.0°C | 4.9°C | 74 mm | 80% | 0.6 m/s | — |
| 1981 | 16.3°C | 12.6°C | 8.9°C | 27.1°C | 4.2°C | 153 mm | 80% | 0.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 16.9°C with lows near 9.3°C (mean 13.1°C), based on 45 years of NASA POWER data.
September averages 105 mm of rainfall in Vancouver, one of the drier months. The wettest on record was 255 mm in 2021.
The hottest September reached 31.3°C in 2011. The coldest dipped to 1.8°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2°C. Daytime highs moved from 15.5°C to 17.3°C and overnight lows from 7.9°C to 10.2°C over the same span.
September is one of the warmer months of the year in Vancouver and one of the drier months, so plan for around 16.9°C daytime highs and 9.3°C at night.
Not quite — September is the 10th coolest month in Vancouver, averaging 13.1°C.
For September in Vancouver, pack light layers you can adjust through the day, with typical highs of 16.9°C and lows of 9.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 80% — quite humid.
Average wind speed in September is 0.6 m/s. The windiest September on record averaged 0.7 m/s (1981).
The wettest September on record was 2021 with 255 mm. On average, September sees 105 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 Vancouver 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.
