August is one of the warmer months of the year in Kawartha Lakes, with average highs near 26.3°C and lows around 15.1°C (mean 20.7°C). It is about average for rainfall, averaging 55 mm of rainfall and 66% relative humidity across the period.
August is one of the warmer months of the year in Kawartha Lakes. Across 45 years of records, the warmest August in Kawartha Lakes was 2021 — when the month averaged 24°C — while the coldest was 1982 at 17.3°C. Typical August days reach 26.3°C with nights near 15.1°C. The long-term trend is warming, about 0.6°C per decade.
August is about average for rainfall in Kawartha Lakes, averaging 55 mm of rainfall. The wettest August on record was 1992 with 131 mm, while the driest was 2021 at 21 mm.
Relative humidity in Kawartha Lakes during August averages 66%. The most humid August was 1992 at 73%, and the least humid was 1987 at 58%.
August receives about 5.1 kWh/m²/day of solar energy in Kawartha Lakes. The sunniest August was 2002 at 5.7 kWh/m²/day, and the cloudiest were 1988 and 1989 at 4.7.
Average wind speed in Kawartha Lakes during August is 1.7 m/s. The windiest August was 1987 at 2 m/s, while the calmest were 1983 and 1998 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.8°C | 20.1°C | 20.6°C | 21.4°C | 22.1°C | +2.3°C |
| Avg High | 25.4°C | 25.8°C | 26.2°C | 27.0°C | 27.9°C | +2.5°C |
| Avg Low | 14.1°C | 14.4°C | 15.0°C | 15.9°C | 16.3°C | +2.2°C |
| Avg Rain | 64 mm | 64 mm | 52 mm | 47 mm | 44 mm | -20 mm |
August temperatures in Kawartha Lakes have risen by about 2.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.5°C (1982) to a record high of 35.5°C (2006).
Rainfall in August is about average for rainfall, averaging 55 mm, with a wettest year of 131 mm.
One of the best times to visit Kawartha Lakes
August is one of the best times to visit Kawartha Lakes. Expect days averaging 26.3°C and nights around 15.1°C (mean 20.7°C) — warmer than Kawartha Lakes's yearly average — with moderate rainfall (55 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 | 27.8°C | 21.8°C | 15.8°C | 34.8°C | 7.5°C | 34 mm | 58% | 1.8 m/s | 5.2 |
| 2024 | 27.4°C | 21.7°C | 16.0°C | 32.7°C | 10.3°C | 39 mm | 64% | 1.7 m/s | 4.9 |
| 2023 | 26.3°C | 20.6°C | 14.8°C | 29.4°C | 9.2°C | 52 mm | 64% | 1.8 m/s | 4.8 |
| 2022 | 28.2°C | 22.4°C | 16.5°C | 33.3°C | 11.8°C | 65 mm | 64% | 1.7 m/s | 5.1 |
| 2021 🔥 | 29.6°C | 24.0°C | 18.3°C | 33.8°C | 10.8°C | 21 mm | 62% | 1.6 m/s | 5.1 |
| 2020 | 27.9°C | 22.2°C | 16.4°C | 33.1°C | 10.9°C | 52 mm | 65% | 1.8 m/s | 5.1 |
| 2019 | 26.3°C | 20.8°C | 15.2°C | 31.0°C | 11.0°C | 56 mm | 66% | 1.8 m/s | 5.6 |
| 2018 | 28.3°C | 23.2°C | 18.0°C | 34.3°C | 11.2°C | 60 mm | 67% | 1.7 m/s | 4.9 |
| 2017 | 25.4°C | 20.1°C | 14.7°C | 31.0°C | 9.4°C | 43 mm | 67% | 1.9 m/s | 5 |
| 2016 | 29.9°C | 23.9°C | 17.9°C | 34.9°C | 11.3°C | 35 mm | 62% | 1.8 m/s | 5.5 |
| 2015 | 26.2°C | 20.9°C | 15.6°C | 32.8°C | 11.6°C | 52 mm | 67% | 1.7 m/s | 5 |
| 2014 | 25.6°C | 19.9°C | 14.2°C | 30.2°C | 8.6°C | 48 mm | 68% | 1.7 m/s | 4.9 |
| 2013 | 26.5°C | 20.7°C | 15.0°C | 31.9°C | 10.6°C | 53 mm | 65% | 1.7 m/s | 5.5 |
| 2012 | 27.1°C | 21.5°C | 15.9°C | 32.3°C | 11.3°C | 36 mm | 63% | 1.8 m/s | 5.2 |
| 2011 | 26.8°C | 21.4°C | 16.0°C | 30.3°C | 10.8°C | 52 mm | 65% | 1.7 m/s | 5.1 |
| 2010 | 27.6°C | 22.0°C | 16.4°C | 33.5°C | 10.6°C | 32 mm | 65% | 1.8 m/s | 5 |
| 2009 | 25.7°C | 20.4°C | 15.1°C | 32.3°C | 8.8°C | 62 mm | 68% | 1.8 m/s | 5.2 |
| 2008 | 25.0°C | 19.5°C | 14.0°C | 29.3°C | 9.2°C | 61 mm | 69% | 1.6 m/s | 5.4 |
| 2007 | 27.0°C | 21.2°C | 15.3°C | 34.4°C | 9.1°C | 35 mm | 63% | 1.8 m/s | 5.3 |
| 2006 | 26.6°C | 20.8°C | 15.0°C | 35.5°C | 8.2°C | 34 mm | 62% | 1.8 m/s | 5.5 |
| 2005 | 28.3°C | 22.3°C | 16.4°C | 33.5°C | 11.2°C | 43 mm | 62% | 1.8 m/s | 5.2 |
| 2004 | 23.3°C | 18.4°C | 13.4°C | 27.7°C | 8.8°C | 72 mm | 73% | 1.7 m/s | 4.8 |
| 2003 | 27.3°C | 21.6°C | 16.0°C | 31.6°C | 9.9°C | 39 mm | 67% | 1.6 m/s | 5.2 |
| 2002 | 26.8°C | 20.9°C | 14.9°C | 33.0°C | 10.2°C | 48 mm | 67% | 1.7 m/s | 5.7 |
| 2001 | 27.3°C | 21.7°C | 16.0°C | 34.2°C | 11.6°C | 65 mm | 65% | 1.8 m/s | 5.3 |
| 2000 | 25.0°C | 19.6°C | 14.2°C | 29.3°C | 6.6°C | 61 mm | 72% | 1.7 m/s | 5.1 |
| 1999 | 24.8°C | 19.5°C | 14.1°C | 29.6°C | 8.3°C | 54 mm | 66% | 1.8 m/s | 5 |
| 1998 | 26.7°C | 21.2°C | 15.7°C | 31.2°C | 8.6°C | 87 mm | 67% | 1.5 m/s | 5.3 |
| 1997 | 24.3°C | 18.8°C | 13.2°C | 29.7°C | 9.6°C | 79 mm | 67% | 1.7 m/s | 5 |
| 1996 | 26.1°C | 20.1°C | 14.2°C | 29.8°C | 10.0°C | 39 mm | 67% | 1.6 m/s | 5.4 |
| 1995 | 28.4°C | 22.1°C | 15.8°C | 33.3°C | 8.0°C | 63 mm | 63% | 1.7 m/s | 5.3 |
| 1994 | 24.6°C | 18.8°C | 13.0°C | 29.3°C | 8.9°C | 34 mm | 68% | 1.8 m/s | 5.2 |
| 1993 | 26.5°C | 20.9°C | 15.3°C | 31.4°C | 9.9°C | 75 mm | 67% | 1.6 m/s | 5.2 |
| 1992 🌧️ | 22.9°C | 17.6°C | 12.3°C | 28.9°C | 8.3°C | 131 mm | 73% | 1.8 m/s | 4.9 |
| 1991 | 26.4°C | 20.7°C | 15.1°C | 32.7°C | 10.5°C | 41 mm | 68% | 1.7 m/s | 5.3 |
| 1990 | 26.8°C | 20.8°C | 14.9°C | 30.2°C | 11.5°C | 40 mm | 67% | 1.6 m/s | 5 |
| 1989 | 25.9°C | 20.1°C | 14.3°C | 32.3°C | 8.3°C | 53 mm | 65% | 1.7 m/s | 4.7 |
| 1988 | 27.2°C | 21.5°C | 15.8°C | 34.5°C | 9.6°C | 39 mm | 64% | 1.9 m/s | 4.7 |
| 1987 | 26.2°C | 20.3°C | 14.4°C | 32.7°C | 8.8°C | 28 mm | 58% | 2 m/s | 5 |
| 1986 | 24.1°C | 18.5°C | 12.9°C | 30.7°C | 4.9°C | 49 mm | 65% | 1.8 m/s | 5.1 |
| 1985 | 24.5°C | 18.9°C | 13.3°C | 31.6°C | 7.2°C | 105 mm | 68% | 1.7 m/s | 4.8 |
| 1984 | 26.6°C | 20.9°C | 15.3°C | 32.1°C | 7.5°C | 57 mm | 68% | 1.6 m/s | 5.2 |
| 1983 | 26.7°C | 20.9°C | 15.1°C | 31.2°C | 9.1°C | 64 mm | 68% | 1.5 m/s | — |
| 1982 ❄️ | 22.8°C | 17.3°C | 11.8°C | 28.5°C | 4.5°C | 64 mm | 69% | 1.8 m/s | — |
| 1981 | 25.0°C | 19.7°C | 14.4°C | 29.3°C | 8.6°C | 113 mm | 70% | 1.6 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 26.3°C with lows near 15.1°C (mean 20.7°C), based on 45 years of NASA POWER data.
August averages 55 mm of rainfall in Kawartha Lakes, about average for rainfall. The wettest on record was 131 mm in 1992.
The hottest August reached 35.5°C in 2006. The coldest dipped to 4.5°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.6°C. Daytime highs moved from 25.1°C to 27.9°C and overnight lows from 14°C to 16.3°C over the same span.
August is one of the warmer months of the year in Kawartha Lakes and about average for rainfall, so plan for around 26.3°C daytime highs and 15.1°C at night.
Not quite — August is the 11th coolest month in Kawartha Lakes, averaging 20.7°C.
For August in Kawartha Lakes, pack light layers you can adjust through the day, with typical highs of 26.3°C and lows of 15.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 66% — moderately humid.
Average wind speed in August is 1.7 m/s. The windiest August on record averaged 2 m/s (1987).
The wettest August on record was 1992 with 131 mm. On average, August sees 55 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 Kawartha Lakes 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.
