August is one of the warmer months of the year in Renfrew, with average highs near 16.7°C and lows around 10°C (mean 13.4°C). It is about average for rainfall, averaging 119 mm of rainfall and 87% relative humidity across the period.
August is one of the warmer months of the year in Renfrew. Across 45 years of records, the warmest August in Renfrew was 1995 — when the month averaged 15.7°C — while the coldest was 1986 at 11.1°C. Typical August days reach 16.7°C with nights near 10°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Renfrew, averaging 119 mm of rainfall. The wettest August on record was 1985 with 241 mm, while the driest was 1983 at 29 mm.
Relative humidity in Renfrew during August averages 87%. The most humid August was 2008 at 90%, and the least humid was 1984 at 81%.
August receives about 3.7 kWh/m²/day of solar energy in Renfrew. The sunniest August was 1995 at 4.6 kWh/m²/day, and the cloudiest were 1985 and 2008 at 3.1.
Average wind speed in Renfrew during August is 3.1 m/s. The windiest August was 2024 at 4.3 m/s, while the calmest was 2021 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.8°C | 13.4°C | 13.7°C | 13.0°C | 14.2°C | +1.4°C |
| Avg High | 16.2°C | 16.8°C | 17.0°C | 16.1°C | 17.7°C | +1.5°C |
| Avg Low | 9.4°C | 9.9°C | 10.4°C | 9.8°C | 10.7°C | +1.3°C |
| Avg Rain | 118 mm | 94 mm | 138 mm | 134 mm | 108 mm | -9 mm |
August temperatures in Renfrew have risen by about 0.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.1°C (2010) to a record high of 25°C (2025).
Rainfall in August is about average for rainfall, averaging 119 mm, with a wettest year of 241 mm.
One of the best times to visit Renfrew
August is one of the best times to visit Renfrew. Expect days averaging 16.7°C and nights around 10°C (mean 13.4°C) — warmer than Renfrew's yearly average — with higher rainfall (119 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 | 18.6°C | 15.0°C | 11.4°C | 25.0°C | 8.5°C | 84 mm | 84% | 3.4 m/s | 4 |
| 2024 | 16.3°C | 13.4°C | 10.5°C | 20.1°C | 7.2°C | 175 mm | 87% | 4.3 m/s | 3.3 |
| 2023 | 17.4°C | 14.0°C | 10.7°C | 22.9°C | 7.3°C | 76 mm | 86% | 3.1 m/s | 3.9 |
| 2022 | 18.1°C | 14.3°C | 10.5°C | 23.7°C | 7.4°C | 83 mm | 86% | 2.8 m/s | 4.2 |
| 2021 | 18.1°C | 14.4°C | 10.6°C | 23.4°C | 6.8°C | 95 mm | 86% | 2.3 m/s | 3.5 |
| 2020 | 17.6°C | 14.0°C | 10.4°C | 24.0°C | 6.1°C | 138 mm | 87% | 3 m/s | 3.8 |
| 2019 | 17.4°C | 14.3°C | 11.3°C | 24.0°C | 7.3°C | 183 mm | 88% | 3.4 m/s | 3.8 |
| 2018 | 15.8°C | 12.8°C | 9.8°C | 20.3°C | 5.2°C | 129 mm | 88% | 3.2 m/s | 3.3 |
| 2017 | 15.7°C | 12.5°C | 9.3°C | 18.4°C | 6.5°C | 147 mm | 89% | 3.3 m/s | 3.5 |
| 2016 | 16.7°C | 13.4°C | 10.2°C | 21.2°C | 6.5°C | 111 mm | 88% | 3.4 m/s | 3.7 |
| 2015 | 15.8°C | 12.6°C | 9.5°C | 20.5°C | 6.4°C | 108 mm | 87% | 3.2 m/s | 3.7 |
| 2014 | 15.2°C | 12.0°C | 8.7°C | 17.7°C | 4.8°C | 143 mm | 86% | 3.6 m/s | 3.8 |
| 2013 | 16.6°C | 13.5°C | 10.3°C | 19.7°C | 7.0°C | 99 mm | 87% | 3.2 m/s | 3.6 |
| 2012 | 16.8°C | 13.6°C | 10.4°C | 19.8°C | 6.4°C | 158 mm | 89% | 2.9 m/s | 3.8 |
| 2011 | 15.3°C | 12.3°C | 9.3°C | 19.2°C | 6.5°C | 157 mm | 88% | 2.8 m/s | 3.4 |
| 2010 | 16.0°C | 12.5°C | 9.0°C | 19.9°C | 4.1°C | 105 mm | 87% | 2.7 m/s | 4.2 |
| 2009 | 16.4°C | 13.6°C | 10.8°C | 19.5°C | 8.4°C | 226 mm | 89% | 3.9 m/s | 3.4 |
| 2008 | 16.4°C | 13.5°C | 10.6°C | 19.4°C | 6.9°C | 209 mm | 90% | 3.1 m/s | 3.1 |
| 2007 | 15.9°C | 12.7°C | 9.4°C | 21.2°C | 6.7°C | 145 mm | 88% | 3.3 m/s | 3.6 |
| 2006 | 16.8°C | 13.4°C | 10.1°C | 21.2°C | 7.6°C | 84 mm | 87% | 2.9 m/s | 3.8 |
| 2005 | 16.8°C | 13.2°C | 9.6°C | 19.6°C | 6.1°C | 104 mm | 87% | 3.2 m/s | 3.7 |
| 2004 | 18.0°C | 14.8°C | 11.5°C | 22.8°C | 6.1°C | 206 mm | 89% | 3.1 m/s | 3.6 |
| 2003 | 18.3°C | 14.5°C | 10.7°C | 24.8°C | 5.2°C | 56 mm | 85% | 2.6 m/s | 4.2 |
| 2002 | 17.6°C | 14.1°C | 10.6°C | 21.9°C | 7.8°C | 107 mm | 88% | 2.5 m/s | 3.8 |
| 2001 | 16.3°C | 13.1°C | 10.0°C | 19.3°C | 6.3°C | 124 mm | 88% | 2.8 m/s | 3.6 |
| 2000 | 17.0°C | 13.6°C | 10.2°C | 20.6°C | 6.6°C | 117 mm | 88% | 2.4 m/s | 3.6 |
| 1999 | 16.6°C | 13.1°C | 9.5°C | 23.1°C | 5.0°C | 79 mm | 85% | 3.2 m/s | 3.9 |
| 1998 | 15.9°C | 12.8°C | 9.7°C | 20.3°C | 5.2°C | 111 mm | 89% | 3.6 m/s | 3.7 |
| 1997 | 18.9°C | 15.1°C | 11.3°C | 23.6°C | 7.9°C | 57 mm | 88% | 2.8 m/s | 4.2 |
| 1996 | 17.1°C | 13.7°C | 10.3°C | 20.4°C | 7.7°C | 95 mm | 87% | 2.5 m/s | 3.7 |
| 1995 🔥 | 20.0°C | 15.7°C | 11.3°C | 24.5°C | 6.2°C | 30 mm | 83% | 2.5 m/s | 4.6 |
| 1994 | 15.9°C | 12.4°C | 8.9°C | 20.1°C | 5.7°C | 113 mm | 86% | 2.8 m/s | 4 |
| 1993 | 15.1°C | 11.6°C | 8.2°C | 20.6°C | 4.2°C | 81 mm | 87% | 2.9 m/s | 3.9 |
| 1992 | 14.8°C | 11.9°C | 8.9°C | 17.6°C | 5.1°C | 195 mm | 87% | 4 m/s | 3.8 |
| 1991 | 17.2°C | 13.9°C | 10.6°C | 22.2°C | 7.3°C | 67 mm | 87% | 3.2 m/s | 3.8 |
| 1990 | 16.8°C | 13.6°C | 10.4°C | 22.8°C | 7.4°C | 109 mm | 87% | 3.5 m/s | 3.3 |
| 1989 | 15.5°C | 12.5°C | 9.5°C | 19.3°C | 5.5°C | 164 mm | 87% | 4.1 m/s | 3.3 |
| 1988 | 15.2°C | 12.4°C | 9.5°C | 21.4°C | 5.5°C | 177 mm | 88% | 3.7 m/s | 3.6 |
| 1987 | 15.7°C | 12.4°C | 9.2°C | 19.1°C | 4.4°C | 123 mm | 87% | 2.9 m/s | 3.7 |
| 1986 ❄️ | 14.6°C | 11.1°C | 7.6°C | 17.8°C | 4.3°C | 109 mm | 83% | 3 m/s | 3.7 |
| 1985 🌧️ | 14.1°C | 11.4°C | 8.6°C | 17.2°C | 6.3°C | 241 mm | 89% | 4.1 m/s | 3.1 |
| 1984 | 19.0°C | 14.7°C | 10.5°C | 24.3°C | 7.0°C | 42 mm | 81% | 2.6 m/s | 3.9 |
| 1983 | 18.5°C | 14.5°C | 10.6°C | 22.3°C | 7.1°C | 29 mm | 83% | 2.5 m/s | — |
| 1982 | 16.1°C | 12.9°C | 9.8°C | 23.7°C | 4.7°C | 129 mm | 86% | 4 m/s | — |
| 1981 | 16.9°C | 13.2°C | 9.4°C | 20.9°C | 6.3°C | 46 mm | 87% | 2.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 16.7°C with lows near 10°C (mean 13.4°C), based on 45 years of NASA POWER data.
August averages 119 mm of rainfall in Renfrew, about average for rainfall. The wettest on record was 241 mm in 1985.
The hottest August reached 25°C in 2025. The coldest dipped to 4.1°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.9°C. Daytime highs moved from 16.9°C to 17.7°C and overnight lows from 9.8°C to 10.7°C over the same span.
August is one of the warmer months of the year in Renfrew and about average for rainfall, so plan for around 16.7°C daytime highs and 10°C at night.
Not quite — August is the 11th coolest month in Renfrew, averaging 13.4°C.
For August in Renfrew, pack light layers you can adjust through the day, with typical highs of 16.7°C and lows of 10°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 87% — quite humid.
Average wind speed in August is 3.1 m/s. The windiest August on record averaged 4.3 m/s (2024).
The wettest August on record was 1985 with 241 mm. On average, August sees 119 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 Renfrew 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.
