September is one of the warmer months of the year in Campbell River, with average highs near 18.1°C and lows around 10°C (mean 14.1°C). It is one of the drier months, averaging 72 mm of rainfall and 80% relative humidity across the period.
September is one of the warmer months of the year in Campbell River. Across 45 years of records, the warmest September in Campbell River was 1995 — when the month averaged 16.5°C — while the coldest was 1992 at 11.5°C. Typical September days reach 18.1°C with nights near 10°C. The long-term trend is warming, about 0.3°C per decade.
September is one of the drier months in Campbell River, averaging 72 mm of rainfall. The wettest September on record was 2018 with 191 mm, while the driest was 1993 at 1 mm.
Relative humidity in Campbell River during September averages 80%. The most humid September was 2018 at 85%, and the least humid were 1993 and 1995 at 73%.
September receives about 3.5 kWh/m²/day of solar energy in Campbell River. The sunniest September was 1993 at 4.5 kWh/m²/day, and the cloudiest was 2021 at 2.8.
Average wind speed in Campbell River during September is 0.7 m/s. The windiest Septembers were 2019, 2021 and 2023, among others at 0.8 m/s, while the calmest were 2012, 2017 and 2022, 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 | 13.4°C | 14.4°C | 13.7°C | 14.1°C | 15.1°C | +1.7°C |
| Avg High | 17.5°C | 18.7°C | 17.6°C | 17.8°C | 19.1°C | +1.6°C |
| Avg Low | 9.2°C | 10.1°C | 9.7°C | 10.3°C | 11.2°C | +2°C |
| Avg Rain | 67 mm | 50 mm | 65 mm | 103 mm | 75 mm | +8 mm |
September temperatures in Campbell River have risen by about 2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 3.1°C (1983) to a record high of 31.4°C (2024).
Rainfall in September is one of the drier months, averaging 72 mm, with a wettest year of 191 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°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 Campbell River
September is one of the best times to visit Campbell River. Expect days averaging 18.1°C and nights around 10°C (mean 14.1°C) — warmer than Campbell River's yearly average — with moderate rainfall (72 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 | 19.6°C | 15.8°C | 12.0°C | 27.3°C | 6.2°C | 119 mm | 84% | 0.7 m/s | 3.1 |
| 2024 | 19.0°C | 14.8°C | 10.6°C | 31.4°C | 4.5°C | 59 mm | 79% | 0.7 m/s | 3.4 |
| 2023 | 18.4°C | 14.2°C | 9.9°C | 25.1°C | 4.8°C | 56 mm | 77% | 0.8 m/s | 3.5 |
| 2022 | 20.6°C | 16.2°C | 11.8°C | 27.4°C | 8.7°C | 24 mm | 73% | 0.6 m/s | 4.1 |
| 2021 | 16.8°C | 13.5°C | 10.1°C | 25.1°C | 6.6°C | 119 mm | 84% | 0.8 m/s | 2.8 |
| 2020 | 20.0°C | 16.3°C | 12.6°C | 28.9°C | 8.2°C | 73 mm | 81% | 0.7 m/s | 3.3 |
| 2019 | 17.1°C | 13.8°C | 10.5°C | 23.8°C | 4.0°C | 118 mm | 83% | 0.8 m/s | 2.9 |
| 2018 🌧️ | 16.3°C | 12.8°C | 9.2°C | 24.5°C | 5.9°C | 191 mm | 85% | 0.7 m/s | 2.9 |
| 2017 | 18.9°C | 15.2°C | 11.5°C | 29.3°C | 6.6°C | 70 mm | 80% | 0.6 m/s | 3.3 |
| 2016 | 16.5°C | 12.8°C | 9.0°C | 20.4°C | 5.0°C | 74 mm | 84% | 0.7 m/s | 3.3 |
| 2015 | 16.1°C | 12.5°C | 8.8°C | 23.7°C | 4.8°C | 101 mm | 82% | 0.7 m/s | 3.1 |
| 2014 | 19.9°C | 15.7°C | 11.4°C | 27.7°C | 8.1°C | 68 mm | 77% | 0.7 m/s | 3.8 |
| 2013 | 18.9°C | 15.1°C | 11.4°C | 30.3°C | 5.5°C | 139 mm | 82% | 0.7 m/s | 3.5 |
| 2012 | 19.2°C | 14.6°C | 9.9°C | 26.0°C | 5.5°C | 18 mm | 79% | 0.6 m/s | 4 |
| 2011 | 18.5°C | 14.8°C | 11.0°C | 27.6°C | 7.3°C | 110 mm | 81% | 0.7 m/s | 3.3 |
| 2010 | 16.8°C | 13.3°C | 9.8°C | 22.1°C | 7.3°C | 143 mm | 83% | 0.7 m/s | 3.1 |
| 2009 | 17.7°C | 13.9°C | 10.1°C | 26.0°C | 4.0°C | 89 mm | 80% | 0.8 m/s | 3.2 |
| 2008 | 18.1°C | 13.9°C | 9.7°C | 26.5°C | 6.1°C | 21 mm | 79% | 0.7 m/s | 3.9 |
| 2007 | 16.8°C | 13.0°C | 9.1°C | 25.9°C | 4.7°C | 101 mm | 83% | 0.7 m/s | 3.5 |
| 2006 | 19.0°C | 14.6°C | 10.2°C | 27.2°C | 6.8°C | 55 mm | 78% | 0.7 m/s | 3.9 |
| 2005 | 16.8°C | 13.0°C | 9.2°C | 21.0°C | 5.9°C | 59 mm | 81% | 0.6 m/s | 3.7 |
| 2004 | 16.5°C | 12.9°C | 9.4°C | 19.6°C | 5.8°C | 106 mm | 83% | 0.7 m/s | 3.1 |
| 2003 | 19.0°C | 14.7°C | 10.4°C | 27.3°C | 7.0°C | 52 mm | 79% | 0.6 m/s | 3.5 |
| 2002 | 17.6°C | 13.6°C | 9.6°C | 24.0°C | 5.5°C | 52 mm | 79% | 0.7 m/s | 3.6 |
| 2001 | 17.3°C | 13.5°C | 9.7°C | 23.1°C | 6.9°C | 56 mm | 83% | 0.7 m/s | 3.4 |
| 2000 | 17.6°C | 13.7°C | 9.9°C | 23.5°C | 5.6°C | 62 mm | 79% | 0.6 m/s | 3.5 |
| 1999 | 17.9°C | 13.3°C | 8.7°C | 26.3°C | 4.3°C | 54 mm | 78% | 0.7 m/s | 4 |
| 1998 | 19.0°C | 14.6°C | 10.2°C | 23.9°C | 7.7°C | 25 mm | 81% | 0.6 m/s | 3.7 |
| 1997 | 18.6°C | 14.8°C | 11.0°C | 26.8°C | 7.5°C | 155 mm | 79% | 0.7 m/s | 3.4 |
| 1996 | 16.0°C | 12.3°C | 8.6°C | 22.5°C | 4.0°C | 85 mm | 80% | 0.7 m/s | 3.2 |
| 1995 🔥 | 20.9°C | 16.5°C | 12.0°C | 28.0°C | 8.1°C | 34 mm | 73% | 0.6 m/s | 3.9 |
| 1994 | 19.2°C | 15.2°C | 11.1°C | 26.7°C | 7.9°C | 57 mm | 79% | 0.6 m/s | 3.4 |
| 1993 | 20.0°C | 15.2°C | 10.4°C | 27.9°C | 4.6°C | 1 mm | 73% | 0.6 m/s | 4.5 |
| 1992 ❄️ | 15.4°C | 11.5°C | 7.7°C | 20.7°C | 3.9°C | 71 mm | 81% | 0.8 m/s | 3.3 |
| 1991 | 19.3°C | 14.7°C | 10.1°C | 26.3°C | 7.3°C | 9 mm | 78% | 0.6 m/s | 3.7 |
| 1990 | 20.4°C | 15.7°C | 10.9°C | 26.5°C | 7.6°C | 8 mm | 76% | 0.6 m/s | 4.1 |
| 1989 | 19.9°C | 15.0°C | 10.2°C | 24.9°C | 7.0°C | 21 mm | 76% | 0.6 m/s | 4.1 |
| 1988 | 17.6°C | 13.2°C | 8.8°C | 29.1°C | 4.8°C | 89 mm | 79% | 0.7 m/s | 3.4 |
| 1987 | 19.5°C | 14.9°C | 10.4°C | 26.3°C | 5.8°C | 32 mm | 77% | 0.6 m/s | 3.6 |
| 1986 | 16.5°C | 12.7°C | 8.9°C | 21.9°C | 5.3°C | 61 mm | 79% | 0.6 m/s | 3.5 |
| 1985 | 16.9°C | 12.5°C | 8.1°C | 21.7°C | 6.2°C | 63 mm | 77% | 0.7 m/s | 3.7 |
| 1984 | 15.8°C | 12.1°C | 8.4°C | 19.4°C | 4.6°C | 88 mm | 78% | 0.7 m/s | 3.2 |
| 1983 | 16.1°C | 12.1°C | 8.1°C | 22.3°C | 3.1°C | 71 mm | 77% | 0.7 m/s | — |
| 1982 | 18.3°C | 14.3°C | 10.3°C | 24.1°C | 6.2°C | 50 mm | 80% | 0.6 m/s | — |
| 1981 | 17.0°C | 13.4°C | 9.8°C | 24.5°C | 5.2°C | 131 mm | 80% | 0.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 18.1°C with lows near 10°C (mean 14.1°C), based on 45 years of NASA POWER data.
September averages 72 mm of rainfall in Campbell River, one of the drier months. The wettest on record was 191 mm in 2018.
The hottest September reached 31.4°C in 2024. The coldest dipped to 3.1°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 16.8°C to 18.9°C and overnight lows from 8.9°C to 10.9°C over the same span.
September is one of the warmer months of the year in Campbell River and one of the drier months, so plan for around 18.1°C daytime highs and 10°C at night.
Not quite — September is the 10th coolest month in Campbell River, averaging 14.1°C.
For September in Campbell River, pack light layers you can adjust through the day, with typical highs of 18.1°C and lows of 10°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 80% — quite humid.
Average wind speed in September is 0.7 m/s. The windiest September on record averaged 0.8 m/s (1981).
The wettest September on record was 2018 with 191 mm. On average, September sees 72 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 Campbell River 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.
