August is one of the warmer months of the year in North Bay, with average highs near 22.7°C and lows around 13°C (mean 17.9°C). It is about average for rainfall, averaging 83 mm of rainfall and 78% relative humidity across the period.
August is one of the warmer months of the year in North Bay. Across 45 years of records, the warmest August in North Bay was 2021 — when the month averaged 21.2°C — while the coldest was 1982 at 14.8°C. Typical August days reach 22.7°C with nights near 13°C. The long-term trend is warming, about 0.5°C per decade.
August is about average for rainfall in North Bay, averaging 83 mm of rainfall. The wettest August on record was 1988 with 195 mm, while the driest was 2021 at 31 mm.
Relative humidity in North Bay during August averages 78%. The most humid August was 2000 at 83%, and the least humid was 2024 at 70%.
August receives about 4.9 kWh/m²/day of solar energy in North Bay. The sunniest August was 2002 at 5.6 kWh/m²/day, and the cloudiest were 1988 and 2015 at 4.4.
Average wind speed in North Bay during August is 0.5 m/s. The windiest Augusts were 2020, 2023 and 2025, among others at 0.6 m/s, while the calmest were 2021, 2022 and 2024, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.1°C | 17.3°C | 17.4°C | 18.7°C | 19.1°C | +2°C |
| Avg High | 21.8°C | 22.1°C | 22.1°C | 23.6°C | 24.3°C | +2.5°C |
| Avg Low | 12.3°C | 12.4°C | 12.7°C | 13.8°C | 14.0°C | +1.7°C |
| Avg Rain | 98 mm | 84 mm | 81 mm | 78 mm | 67 mm | -32 mm |
August temperatures in North Bay have risen by about 2.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 3.7°C (1982) to a record high of 31.9°C (2021).
Rainfall in August is about average for rainfall, averaging 83 mm, with a wettest year of 195 mm.
One of the best times to visit North Bay
August is one of the best times to visit North Bay. Expect days averaging 22.7°C and nights around 13°C (mean 17.9°C) — warmer than North Bay's yearly average — with higher rainfall (83 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 | 23.9°C | 18.8°C | 13.7°C | 31.2°C | 6.7°C | 42 mm | 73% | 0.6 m/s | 5.2 |
| 2024 | 25.5°C | 19.7°C | 13.8°C | 31.0°C | 8.3°C | 56 mm | 70% | 0.5 m/s | 5.2 |
| 2023 | 22.8°C | 17.7°C | 12.7°C | 26.1°C | 6.7°C | 92 mm | 75% | 0.6 m/s | 4.6 |
| 2022 | 24.4°C | 19.2°C | 14.0°C | 28.6°C | 9.3°C | 84 mm | 74% | 0.5 m/s | 4.9 |
| 2021 🔥 | 26.3°C | 21.2°C | 16.0°C | 31.9°C | 9.0°C | 31 mm | 74% | 0.5 m/s | 4.9 |
| 2020 | 22.8°C | 18.2°C | 13.6°C | 28.6°C | 7.2°C | 94 mm | 78% | 0.6 m/s | 4.5 |
| 2019 | 23.3°C | 18.2°C | 13.1°C | 27.1°C | 8.9°C | 57 mm | 74% | 0.6 m/s | 5.3 |
| 2018 | 25.5°C | 20.4°C | 15.4°C | 29.6°C | 9.2°C | 90 mm | 75% | 0.6 m/s | 4.7 |
| 2017 | 21.6°C | 16.8°C | 12.1°C | 27.0°C | 6.4°C | 91 mm | 80% | 0.6 m/s | 4.6 |
| 2016 | 25.5°C | 20.5°C | 15.5°C | 30.6°C | 10.1°C | 90 mm | 76% | 0.6 m/s | 4.8 |
| 2015 | 23.2°C | 18.5°C | 13.9°C | 28.4°C | 10.0°C | 62 mm | 79% | 0.6 m/s | 4.4 |
| 2014 | 21.9°C | 17.3°C | 12.6°C | 27.0°C | 7.2°C | 94 mm | 80% | 0.6 m/s | 4.5 |
| 2013 | 23.3°C | 18.3°C | 13.2°C | 29.0°C | 9.9°C | 72 mm | 75% | 0.6 m/s | 4.9 |
| 2012 | 23.6°C | 18.7°C | 13.9°C | 29.8°C | 8.9°C | 91 mm | 74% | 0.6 m/s | 4.6 |
| 2011 | 23.7°C | 18.7°C | 13.7°C | 27.4°C | 9.9°C | 56 mm | 74% | 0.5 m/s | 4.9 |
| 2010 | 24.4°C | 19.5°C | 14.7°C | 29.7°C | 9.4°C | 81 mm | 75% | 0.5 m/s | 4.7 |
| 2009 | 21.6°C | 17.1°C | 12.6°C | 27.0°C | 5.1°C | 75 mm | 80% | 0.5 m/s | 4.7 |
| 2008 | 22.0°C | 17.3°C | 12.6°C | 26.9°C | 8.0°C | 74 mm | 80% | 0.5 m/s | 5.1 |
| 2007 | 22.5°C | 17.6°C | 12.7°C | 28.0°C | 7.3°C | 72 mm | 78% | 0.5 m/s | 5.1 |
| 2006 | 21.6°C | 16.7°C | 11.7°C | 30.3°C | 5.5°C | 71 mm | 78% | 0.6 m/s | 5.4 |
| 2005 | 23.3°C | 18.6°C | 13.9°C | 29.0°C | 9.7°C | 88 mm | 78% | 0.5 m/s | 5.1 |
| 2004 | 20.1°C | 15.7°C | 11.3°C | 25.8°C | 5.5°C | 64 mm | 82% | 0.6 m/s | 4.6 |
| 2003 | 23.0°C | 18.3°C | 13.6°C | 27.5°C | 7.2°C | 79 mm | 82% | 0.5 m/s | 4.9 |
| 2002 | 22.7°C | 17.9°C | 13.1°C | 26.9°C | 7.9°C | 48 mm | 80% | 0.5 m/s | 5.6 |
| 2001 | 23.1°C | 18.5°C | 13.8°C | 29.3°C | 8.0°C | 129 mm | 81% | 0.5 m/s | 5.1 |
| 2000 | 21.0°C | 16.5°C | 12.0°C | 25.4°C | 6.1°C | 111 mm | 83% | 0.5 m/s | 4.5 |
| 1999 | 21.7°C | 16.8°C | 11.9°C | 27.6°C | 7.2°C | 100 mm | 77% | 0.5 m/s | 5.2 |
| 1998 | 23.4°C | 18.5°C | 13.6°C | 28.0°C | 6.9°C | 70 mm | 77% | 0.5 m/s | 4.8 |
| 1997 | 20.1°C | 15.6°C | 11.1°C | 24.8°C | 7.1°C | 86 mm | 81% | 0.6 m/s | 4.5 |
| 1996 | 22.5°C | 17.5°C | 12.6°C | 26.5°C | 6.8°C | 50 mm | 80% | 0.5 m/s | 5.3 |
| 1995 | 23.3°C | 18.2°C | 13.0°C | 28.8°C | 6.2°C | 69 mm | 81% | 0.5 m/s | 4.9 |
| 1994 | 20.8°C | 16.0°C | 11.1°C | 25.2°C | 6.6°C | 129 mm | 81% | 0.6 m/s | 5 |
| 1993 | 23.8°C | 18.8°C | 13.8°C | 29.1°C | 7.0°C | 100 mm | 79% | 0.5 m/s | 5 |
| 1992 | 20.2°C | 15.7°C | 11.2°C | 26.7°C | 6.5°C | 121 mm | 80% | 0.5 m/s | 4.7 |
| 1991 | 22.8°C | 18.2°C | 13.5°C | 28.1°C | 7.2°C | 66 mm | 80% | 0.5 m/s | 5 |
| 1990 | 22.6°C | 17.6°C | 12.5°C | 29.1°C | 7.3°C | 54 mm | 81% | 0.5 m/s | 5 |
| 1989 | 21.7°C | 16.7°C | 11.7°C | 27.2°C | 4.6°C | 83 mm | 80% | 0.5 m/s | 4.6 |
| 1988 🌧️ | 22.9°C | 18.5°C | 14.0°C | 30.5°C | 7.2°C | 195 mm | 83% | 0.5 m/s | 4.4 |
| 1987 | 22.0°C | 17.0°C | 12.0°C | 28.2°C | 6.0°C | 109 mm | 77% | 0.6 m/s | 4.9 |
| 1986 | 20.6°C | 15.8°C | 10.9°C | 26.3°C | 4.9°C | 60 mm | 80% | 0.6 m/s | 5.2 |
| 1985 | 21.0°C | 16.5°C | 12.0°C | 25.9°C | 7.4°C | 57 mm | 81% | 0.5 m/s | 4.8 |
| 1984 | 22.8°C | 18.0°C | 13.3°C | 28.0°C | 7.6°C | 89 mm | 82% | 0.5 m/s | 4.8 |
| 1983 | 23.5°C | 18.9°C | 14.3°C | 26.9°C | 9.6°C | 104 mm | 80% | 0.5 m/s | — |
| 1982 ❄️ | 19.4°C | 14.8°C | 10.2°C | 25.0°C | 3.7°C | 76 mm | 80% | 0.5 m/s | — |
| 1981 | 22.6°C | 17.7°C | 12.7°C | 26.8°C | 7.3°C | 114 mm | 80% | 0.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 22.7°C with lows near 13°C (mean 17.9°C), based on 45 years of NASA POWER data.
August averages 83 mm of rainfall in North Bay, about average for rainfall. The wettest on record was 195 mm in 1988.
The hottest August reached 31.9°C in 2021. The coldest dipped to 3.7°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.1°C. Daytime highs moved from 21.9°C to 24.6°C and overnight lows from 12.5°C to 14°C over the same span.
August is one of the warmer months of the year in North Bay and about average for rainfall, so plan for around 22.7°C daytime highs and 13°C at night.
Not quite — August is the 11th coolest month in North Bay, averaging 17.9°C.
For August in North Bay, pack light layers you can adjust through the day, with typical highs of 22.7°C and lows of 13°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 78% — quite humid.
Average wind speed in August is 0.5 m/s. The windiest August on record averaged 0.6 m/s (1986).
The wettest August on record was 1988 with 195 mm. On average, August sees 83 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 North Bay 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.
