August is one of the warmer months of the year in Kelowna, with average highs near 24.7°C and lows around 9.7°C (mean 17.2°C). It is about average for rainfall, averaging 27 mm of rainfall and 58% relative humidity across the period.
August is one of the warmer months of the year in Kelowna. Across 45 years of records, the warmest August in Kelowna was 2022 — when the month averaged 20.2°C — while the coldest was 1995 at 13.3°C. Typical August days reach 24.7°C with nights near 9.7°C. The long-term trend is warming, about 0.4°C per decade.
August is about average for rainfall in Kelowna, averaging 27 mm of rainfall. The wettest August on record was 2004 with 65 mm, while the driest was 2017 at 5 mm.
Relative humidity in Kelowna during August averages 58%. The most humid August was 1991 at 67%, and the least humid was 2003 at 50%.
August receives about 5.6 kWh/m²/day of solar energy in Kelowna. The sunniest Augusts were 2005, 2011 and 2012, among others at 6.3 kWh/m²/day, and the cloudiest was 2021 at 4.7.
Average wind speed in Kelowna during August is 0.3 m/s. The windiest Augusts were 2002 and 2006 at 0.4 m/s, while the calmest were 2023, 2024 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 | 16.5°C | 16.8°C | 17.0°C | 17.9°C | 18.0°C | +1.5°C |
| Avg High | 24.1°C | 24.2°C | 24.8°C | 25.3°C | 25.1°C | +1°C |
| Avg Low | 8.9°C | 9.4°C | 9.2°C | 10.4°C | 10.8°C | +1.9°C |
| Avg Rain | 29 mm | 31 mm | 24 mm | 21 mm | 31 mm | +3 mm |
August temperatures in Kelowna have risen by about 1.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 1°C (2008) to a record high of 35.7°C (2003).
Rainfall in August is about average for rainfall, averaging 27 mm, with a wettest year of 65 mm.
One of the best times to visit Kelowna
August is one of the best times to visit Kelowna. Expect days averaging 24.7°C and nights around 9.7°C (mean 17.2°C) — warmer than Kelowna's yearly average — with low rainfall (27 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 | 24.4°C | 18.0°C | 11.6°C | 31.4°C | 6.3°C | 41 mm | 65% | 0.3 m/s | 5.3 |
| 2024 | 25.2°C | 18.1°C | 11.0°C | 33.5°C | 4.0°C | 52 mm | 62% | 0.3 m/s | 5.2 |
| 2023 | 25.9°C | 18.5°C | 11.1°C | 34.9°C | 6.7°C | 26 mm | 58% | 0.3 m/s | 5.3 |
| 2022 🔥 | 27.6°C | 20.2°C | 12.7°C | 33.0°C | 6.6°C | 27 mm | 58% | 0.3 m/s | 5.6 |
| 2021 | 23.5°C | 16.7°C | 9.9°C | 32.6°C | 5.2°C | 29 mm | 64% | 0.3 m/s | 4.7 |
| 2020 | 24.1°C | 16.3°C | 8.5°C | 32.9°C | 2.9°C | 15 mm | 62% | 0.3 m/s | 6 |
| 2019 | 25.1°C | 17.6°C | 10.0°C | 32.3°C | 5.0°C | 34 mm | 59% | 0.3 m/s | 5.7 |
| 2018 | 24.9°C | 17.7°C | 10.5°C | 33.6°C | 5.2°C | 16 mm | 58% | 0.3 m/s | 5.1 |
| 2017 | 27.2°C | 19.3°C | 11.4°C | 33.0°C | 6.9°C | 5 mm | 53% | 0.3 m/s | 5.8 |
| 2016 | 25.4°C | 17.8°C | 10.2°C | 29.9°C | 6.7°C | 24 mm | 58% | 0.3 m/s | 5.8 |
| 2015 | 25.1°C | 17.9°C | 10.6°C | 32.7°C | 7.0°C | 28 mm | 53% | 0.3 m/s | 5.1 |
| 2014 | 25.4°C | 18.6°C | 11.8°C | 32.7°C | 5.5°C | 44 mm | 61% | 0.3 m/s | 5.1 |
| 2013 | 25.0°C | 18.2°C | 11.4°C | 30.6°C | 6.5°C | 30 mm | 60% | 0.3 m/s | 5.1 |
| 2012 | 26.3°C | 18.2°C | 10.1°C | 33.1°C | 4.9°C | 12 mm | 56% | 0.3 m/s | 6.3 |
| 2011 | 25.1°C | 17.1°C | 9.0°C | 30.1°C | 4.4°C | 6 mm | 57% | 0.3 m/s | 6.3 |
| 2010 | 23.4°C | 16.1°C | 8.9°C | 31.0°C | 2.5°C | 17 mm | 57% | 0.3 m/s | 5.5 |
| 2009 | 25.5°C | 17.5°C | 9.5°C | 32.8°C | 4.5°C | 30 mm | 56% | 0.3 m/s | 5.7 |
| 2008 | 23.9°C | 16.5°C | 9.1°C | 34.3°C | 1.0°C | 39 mm | 57% | 0.3 m/s | 5.4 |
| 2007 | 22.8°C | 15.4°C | 8.0°C | 31.6°C | 4.5°C | 16 mm | 58% | 0.3 m/s | 5.6 |
| 2006 | 25.0°C | 16.8°C | 8.7°C | 31.4°C | 4.2°C | 9 mm | 52% | 0.4 m/s | 5.8 |
| 2005 | 25.0°C | 17.1°C | 9.2°C | 30.8°C | 3.8°C | 20 mm | 53% | 0.3 m/s | 6.3 |
| 2004 🌧️ | 25.6°C | 18.8°C | 11.9°C | 35.6°C | 7.6°C | 65 mm | 60% | 0.3 m/s | 5.1 |
| 2003 | 26.9°C | 18.4°C | 9.9°C | 35.7°C | 4.0°C | 5 mm | 50% | 0.3 m/s | 6 |
| 2002 | 24.0°C | 16.1°C | 8.2°C | 30.6°C | 5.2°C | 17 mm | 55% | 0.4 m/s | 5.9 |
| 2001 | 25.7°C | 17.7°C | 9.7°C | 33.7°C | 4.6°C | 17 mm | 55% | 0.3 m/s | 5.9 |
| 2000 | 23.4°C | 15.6°C | 7.8°C | 30.3°C | 3.2°C | 20 mm | 60% | 0.3 m/s | 6.1 |
| 1999 | 25.0°C | 17.6°C | 10.3°C | 32.4°C | 3.7°C | 39 mm | 61% | 0.3 m/s | 5.4 |
| 1998 | 27.0°C | 18.6°C | 10.3°C | 34.5°C | 5.1°C | 8 mm | 54% | 0.3 m/s | 6.3 |
| 1997 | 24.4°C | 17.2°C | 10.1°C | 33.1°C | 5.7°C | 25 mm | 61% | 0.3 m/s | 5.6 |
| 1996 | 25.0°C | 17.0°C | 9.1°C | 33.8°C | 4.0°C | 14 mm | 54% | 0.3 m/s | 5.7 |
| 1995 ❄️ | 20.4°C | 13.3°C | 6.3°C | 28.9°C | 2.9°C | 52 mm | 64% | 0.3 m/s | 4.9 |
| 1994 | 25.2°C | 17.6°C | 9.9°C | 34.3°C | 5.1°C | 37 mm | 53% | 0.3 m/s | 5.5 |
| 1993 | 21.9°C | 15.1°C | 8.4°C | 28.8°C | 3.5°C | 22 mm | 61% | 0.3 m/s | 5.4 |
| 1992 | 24.6°C | 16.9°C | 9.2°C | 32.0°C | 1.5°C | 14 mm | 52% | 0.3 m/s | 5.7 |
| 1991 | 23.7°C | 16.8°C | 9.9°C | 30.3°C | 4.2°C | 57 mm | 67% | 0.3 m/s | 5.5 |
| 1990 | 24.7°C | 17.5°C | 10.3°C | 31.8°C | 5.2°C | 39 mm | 61% | 0.3 m/s | 5.5 |
| 1989 | 22.0°C | 15.3°C | 8.5°C | 31.3°C | 5.0°C | 59 mm | 66% | 0.3 m/s | 4.9 |
| 1988 | 24.0°C | 16.1°C | 8.3°C | 33.4°C | 3.5°C | 28 mm | 59% | 0.3 m/s | 5.5 |
| 1987 | 23.4°C | 15.7°C | 8.0°C | 30.9°C | 3.7°C | 11 mm | 57% | 0.3 m/s | 5.6 |
| 1986 | 26.4°C | 18.6°C | 10.8°C | 33.5°C | 7.1°C | 8 mm | 53% | 0.3 m/s | 6.1 |
| 1985 | 22.6°C | 14.9°C | 7.2°C | 27.8°C | 4.0°C | 34 mm | 56% | 0.3 m/s | 5.4 |
| 1984 | 23.8°C | 16.0°C | 8.1°C | 29.5°C | 2.2°C | 27 mm | 61% | 0.3 m/s | 5.6 |
| 1983 | 24.5°C | 17.0°C | 9.6°C | 31.4°C | 6.0°C | 27 mm | 62% | 0.3 m/s | — |
| 1982 | 22.6°C | 15.5°C | 8.3°C | 30.2°C | 2.9°C | 33 mm | 63% | 0.3 m/s | — |
| 1981 | 27.2°C | 19.3°C | 11.4°C | 34.4°C | 4.7°C | 33 mm | 56% | 0.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 24.7°C with lows near 9.7°C (mean 17.2°C), based on 45 years of NASA POWER data.
August averages 27 mm of rainfall in Kelowna, about average for rainfall. The wettest on record was 65 mm in 2004.
The hottest August reached 35.7°C in 2003. The coldest dipped to 1°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.8°C. Daytime highs moved from 24.1°C to 25.3°C and overnight lows from 8.9°C to 11.3°C over the same span.
August is one of the warmer months of the year in Kelowna and about average for rainfall, so plan for around 24.7°C daytime highs and 9.7°C at night.
Not quite — August is the 11th coolest month in Kelowna, averaging 17.2°C.
For August in Kelowna, pack light layers you can adjust through the day, with typical highs of 24.7°C and lows of 9.7°C.
Relative humidity in August averages 58% — moderately humid.
Average wind speed in August is 0.3 m/s. The windiest August on record averaged 0.4 m/s (2002).
The wettest August on record was 2004 with 65 mm. On average, August sees 27 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 Kelowna 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.
