August is one of the warmer months of the year in Halifax, with average highs near 21.1°C and lows around 15.4°C (mean 18.3°C). It is one of the drier months, averaging 87 mm of rainfall and 86% relative humidity across the period.
August is one of the warmer months of the year in Halifax. Across 45 years of records, the warmest August in Halifax was 2012 — when the month averaged 20°C — while the coldest was 1982 at 15.9°C. Typical August days reach 21.1°C with nights near 15.4°C. The long-term trend is warming, about 0.3°C per decade.
August is one of the drier months in Halifax, averaging 87 mm of rainfall. The wettest August on record was 2023 with 220 mm, while the driest was 1995 at 38 mm.
Relative humidity in Halifax during August averages 86%. The most humid August was 2015 at 90%, and the least humid was 1987 at 78%.
August receives about 5 kWh/m²/day of solar energy in Halifax. The sunniest Augusts were 1984 and 2025 at 5.6 kWh/m²/day, and the cloudiest were 1988 and 2003 at 4.3.
Average wind speed in Halifax during August is 2 m/s. The windiest Augusts were 1991 and 2008 at 2.4 m/s, while the calmest were 1993, 1996 and 2003, among others at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.6°C | 18.2°C | 18.0°C | 18.8°C | 18.9°C | +1.3°C |
| Avg High | 20.6°C | 21.2°C | 20.9°C | 21.6°C | 21.6°C | +1°C |
| Avg Low | 14.6°C | 15.1°C | 15.2°C | 16.0°C | 16.1°C | +1.5°C |
| Avg Rain | 83 mm | 64 mm | 111 mm | 76 mm | 111 mm | +28 mm |
August temperatures in Halifax have risen by about 1.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 7.5°C (1982) to a record high of 27.4°C (2010).
Rainfall in August is one of the drier months, averaging 87 mm, with a wettest year of 220 mm.
One of the best times to visit Halifax
August is one of the best times to visit Halifax. Expect days averaging 21.1°C and nights around 15.4°C (mean 18.3°C) — warmer than Halifax's yearly average — with higher rainfall (87 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 | 21.3°C | 18.2°C | 15.0°C | 25.0°C | 12.7°C | 68 mm | 83% | 2.1 m/s | 5.6 |
| 2024 | 21.3°C | 18.5°C | 15.7°C | 25.4°C | 10.8°C | 85 mm | 89% | 1.8 m/s | 5 |
| 2023 🌧️ | 21.1°C | 18.6°C | 16.2°C | 23.6°C | 12.4°C | 220 mm | 88% | 2 m/s | 4.6 |
| 2022 | 22.5°C | 19.9°C | 17.2°C | 25.2°C | 15.2°C | 94 mm | 89% | 1.9 m/s | 4.8 |
| 2021 | 22.1°C | 19.4°C | 16.7°C | 26.8°C | 13.4°C | 136 mm | 88% | 2 m/s | 4.9 |
| 2020 | 21.5°C | 18.6°C | 15.7°C | 24.9°C | 11.5°C | 65 mm | 85% | 2.3 m/s | 5.4 |
| 2019 | 21.5°C | 18.6°C | 15.7°C | 24.3°C | 12.5°C | 120 mm | 86% | 2.1 m/s | 5.3 |
| 2018 | 22.8°C | 19.9°C | 17.0°C | 25.8°C | 14.9°C | 55 mm | 88% | 1.8 m/s | 5.1 |
| 2017 | 21.1°C | 18.2°C | 15.3°C | 23.2°C | 11.9°C | 117 mm | 87% | 2.1 m/s | 5.3 |
| 2016 | 21.6°C | 18.8°C | 16.0°C | 24.0°C | 13.9°C | 80 mm | 87% | 2.3 m/s | 5.4 |
| 2015 | 22.2°C | 19.7°C | 17.3°C | 25.6°C | 14.5°C | 81 mm | 90% | 2.2 m/s | 4.9 |
| 2014 | 21.1°C | 18.4°C | 15.6°C | 24.0°C | 10.3°C | 44 mm | 85% | 2.1 m/s | 5.1 |
| 2013 | 20.5°C | 17.6°C | 14.7°C | 23.5°C | 10.8°C | 62 mm | 87% | 2.2 m/s | 5.4 |
| 2012 🔥 | 22.7°C | 20.0°C | 17.3°C | 25.5°C | 14.5°C | 61 mm | 87% | 2 m/s | 4.9 |
| 2011 | 20.5°C | 17.9°C | 15.4°C | 22.5°C | 12.6°C | 84 mm | 89% | 2.2 m/s | 5 |
| 2010 | 21.8°C | 18.8°C | 15.8°C | 27.4°C | 12.9°C | 52 mm | 83% | 2.1 m/s | 5.4 |
| 2009 | 21.6°C | 18.8°C | 16.1°C | 25.9°C | 11.1°C | 154 mm | 88% | 2.1 m/s | 4.9 |
| 2008 | 20.6°C | 18.0°C | 15.4°C | 26.3°C | 13.1°C | 162 mm | 89% | 2.4 m/s | 4.4 |
| 2007 | 20.4°C | 17.4°C | 14.3°C | 24.3°C | 10.1°C | 136 mm | 87% | 1.8 m/s | 5.2 |
| 2006 | 20.0°C | 17.1°C | 14.2°C | 24.7°C | 11.1°C | 76 mm | 85% | 2.2 m/s | 5.3 |
| 2005 | 21.0°C | 18.2°C | 15.4°C | 23.1°C | 12.2°C | 50 mm | 88% | 1.9 m/s | 5.1 |
| 2004 | 20.7°C | 17.9°C | 15.2°C | 24.1°C | 11.9°C | 120 mm | 89% | 2 m/s | 5.1 |
| 2003 | 20.5°C | 17.7°C | 14.9°C | 23.5°C | 10.3°C | 163 mm | 89% | 1.7 m/s | 4.3 |
| 2002 | 22.2°C | 18.9°C | 15.6°C | 26.7°C | 11.9°C | 57 mm | 83% | 1.9 m/s | 5.3 |
| 2001 | 21.3°C | 18.4°C | 15.5°C | 23.5°C | 10.8°C | 68 mm | 88% | 2 m/s | 4.7 |
| 2000 | 20.7°C | 17.9°C | 15.1°C | 24.6°C | 12.4°C | 121 mm | 87% | 2.1 m/s | 4.8 |
| 1999 | 21.9°C | 18.8°C | 15.6°C | 25.4°C | 12.8°C | 70 mm | 81% | 2.2 m/s | 4.9 |
| 1998 | 21.8°C | 18.5°C | 15.2°C | 25.1°C | 12.1°C | 55 mm | 83% | 2 m/s | 5.3 |
| 1997 | 20.1°C | 17.3°C | 14.5°C | 23.7°C | 11.2°C | 51 mm | 86% | 2 m/s | 4.5 |
| 1996 | 20.8°C | 17.9°C | 15.0°C | 25.0°C | 12.3°C | 47 mm | 87% | 1.7 m/s | 4.8 |
| 1995 | 20.9°C | 17.7°C | 14.6°C | 25.7°C | 11.6°C | 38 mm | 84% | 2.1 m/s | 5.4 |
| 1994 | 20.9°C | 18.1°C | 15.3°C | 24.4°C | 11.2°C | 86 mm | 87% | 2.2 m/s | 4.7 |
| 1993 | 20.7°C | 17.8°C | 14.8°C | 24.9°C | 12.0°C | 58 mm | 86% | 1.7 m/s | 5 |
| 1992 | 20.4°C | 17.5°C | 14.5°C | 24.8°C | 11.7°C | 58 mm | 86% | 2 m/s | 5.4 |
| 1991 | 21.5°C | 18.6°C | 15.6°C | 25.3°C | 11.1°C | 131 mm | 85% | 2.4 m/s | 4.9 |
| 1990 | 22.5°C | 19.4°C | 16.3°C | 26.0°C | 12.2°C | 49 mm | 85% | 1.7 m/s | 5 |
| 1989 | 20.4°C | 17.7°C | 15.0°C | 23.4°C | 9.6°C | 46 mm | 85% | 2.2 m/s | 5.2 |
| 1988 | 21.3°C | 18.3°C | 15.2°C | 24.4°C | 10.8°C | 40 mm | 87% | 2 m/s | 4.3 |
| 1987 | 21.2°C | 17.7°C | 14.2°C | 27.1°C | 9.7°C | 44 mm | 78% | 2 m/s | 5.2 |
| 1986 | 19.7°C | 17.0°C | 14.3°C | 22.7°C | 9.6°C | 120 mm | 87% | 2 m/s | 5 |
| 1985 | 20.0°C | 17.0°C | 14.1°C | 23.9°C | 11.1°C | 152 mm | 86% | 1.8 m/s | 5 |
| 1984 | 22.1°C | 19.1°C | 16.2°C | 24.4°C | 12.0°C | 83 mm | 88% | 1.8 m/s | 5.6 |
| 1983 | 20.5°C | 17.9°C | 15.3°C | 24.1°C | 12.1°C | 127 mm | 87% | 2.3 m/s | — |
| 1982 ❄️ | 18.5°C | 15.9°C | 13.2°C | 22.7°C | 7.5°C | 83 mm | 87% | 2.1 m/s | — |
| 1981 | 21.3°C | 17.8°C | 14.3°C | 25.0°C | 10.9°C | 52 mm | 81% | 2.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.1°C with lows near 15.4°C (mean 18.3°C), based on 45 years of NASA POWER data.
August averages 87 mm of rainfall in Halifax, one of the drier months. The wettest on record was 220 mm in 2023.
The hottest August reached 27.4°C in 2010. The coldest dipped to 7.5°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.4°C. Daytime highs moved from 20.5°C to 21.7°C and overnight lows from 14.6°C to 16.2°C over the same span.
August is one of the warmer months of the year in Halifax and one of the drier months, so plan for around 21.1°C daytime highs and 15.4°C at night.
Not quite — August is the 12th coolest month in Halifax, averaging 18.3°C.
For August in Halifax, pack light layers you can adjust through the day, with typical highs of 21.1°C and lows of 15.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 86% — quite humid.
Average wind speed in August is 2 m/s. The windiest August on record averaged 2.4 m/s (1991).
The wettest August on record was 2023 with 220 mm. On average, August sees 87 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 Halifax 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.
