July is one of the warmer months of the year in Cape Breton, with average highs near 21°C and lows around 14.4°C (mean 17.7°C). It is one of the drier months, averaging 76 mm of rainfall and 82% relative humidity across the period.
July is one of the warmer months of the year in Cape Breton. Across 45 years of records, the warmest Julys in Cape Breton were 2023 and 2024 — when the month averaged 19.8°C — while the coldest was 1986 at 15.3°C. Typical July days reach 21°C with nights near 14.4°C. The long-term trend is warming, about 0.3°C per decade.
July is one of the drier months in Cape Breton, averaging 76 mm of rainfall. The wettest July on record was 1983 with 173 mm, while the driest was 1987 at 13 mm.
Relative humidity in Cape Breton during July averages 82%. The most humid July was 2023 at 87%, and the least humid was 1991 at 72%.
July receives about 5.5 kWh/m²/day of solar energy in Cape Breton. The sunniest July was 1997 at 6.4 kWh/m²/day, and the cloudiest was 1988 at 4.5.
Average wind speed in Cape Breton during July is 5 m/s. The windiest July was 2014 at 6.5 m/s, while the calmest was 2020 at 4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.1°C | 17.5°C | 17.6°C | 18.0°C | 18.6°C | +1.5°C |
| Avg High | 20.5°C | 21.1°C | 20.7°C | 21.2°C | 21.8°C | +1.3°C |
| Avg Low | 13.7°C | 14.0°C | 14.4°C | 14.8°C | 15.4°C | +1.7°C |
| Avg Rain | 75 mm | 69 mm | 80 mm | 76 mm | 84 mm | +9 mm |
July temperatures in Cape Breton have risen by about 1.4°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8.3°C (1992) to a record high of 29.1°C (2025).
Rainfall in July is one of the drier months, averaging 76 mm, with a wettest year of 173 mm.
One of the best times to visit Cape Breton
July is one of the best times to visit Cape Breton. Expect days averaging 21°C and nights around 14.4°C (mean 17.7°C) — warmer than Cape Breton's yearly average — with moderate rainfall (76 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 | 23.0°C | 19.1°C | 15.3°C | 29.1°C | 13.1°C | 38 mm | 80% | 4.6 m/s | 5.6 |
| 2024 | 23.3°C | 19.8°C | 16.4°C | 26.9°C | 12.0°C | 51 mm | 84% | 4.3 m/s | 5.5 |
| 2023 🔥 | 22.6°C | 19.8°C | 17.0°C | 26.8°C | 13.0°C | 126 mm | 87% | 4.4 m/s | 5.1 |
| 2022 | 22.0°C | 18.6°C | 15.2°C | 28.0°C | 11.3°C | 100 mm | 82% | 5.2 m/s | 6.1 |
| 2021 | 19.5°C | 16.6°C | 13.7°C | 25.6°C | 10.0°C | 100 mm | 84% | 5.2 m/s | 4.6 |
| 2020 | 20.5°C | 17.5°C | 14.6°C | 27.0°C | 11.4°C | 88 mm | 85% | 4 m/s | 5.3 |
| 2019 | 20.5°C | 17.1°C | 13.8°C | 26.7°C | 10.1°C | 87 mm | 83% | 4.5 m/s | 5.9 |
| 2018 | 21.9°C | 18.4°C | 14.9°C | 25.8°C | 9.3°C | 45 mm | 85% | 5.1 m/s | 5.9 |
| 2017 | 21.0°C | 17.8°C | 14.6°C | 25.6°C | 11.2°C | 62 mm | 82% | 4.3 m/s | 6 |
| 2016 | 20.9°C | 17.8°C | 14.7°C | 27.0°C | 9.4°C | 70 mm | 83% | 5.1 m/s | 5.6 |
| 2015 | 19.1°C | 16.1°C | 13.1°C | 22.2°C | 11.7°C | 88 mm | 84% | 4.3 m/s | 4.8 |
| 2014 | 22.0°C | 18.9°C | 15.9°C | 24.9°C | 11.9°C | 46 mm | 85% | 6.5 m/s | 5.6 |
| 2013 | 22.9°C | 19.5°C | 16.2°C | 28.3°C | 11.4°C | 63 mm | 81% | 4.7 m/s | 5.5 |
| 2012 | 22.1°C | 18.8°C | 15.5°C | 25.4°C | 13.8°C | 80 mm | 81% | 4.4 m/s | 6 |
| 2011 | 19.7°C | 16.6°C | 13.4°C | 24.2°C | 11.1°C | 107 mm | 86% | 5.3 m/s | 4.9 |
| 2010 | 21.6°C | 18.7°C | 15.8°C | 24.8°C | 10.4°C | 113 mm | 85% | 5.3 m/s | 5.5 |
| 2009 | 20.2°C | 17.3°C | 14.3°C | 26.1°C | 9.4°C | 81 mm | 85% | 4.9 m/s | 5.4 |
| 2008 | 22.4°C | 19.3°C | 16.2°C | 27.2°C | 13.3°C | 61 mm | 87% | 4.5 m/s | 5.8 |
| 2007 | 21.3°C | 18.2°C | 15.1°C | 28.2°C | 10.6°C | 134 mm | 85% | 5 m/s | 5.1 |
| 2006 | 21.8°C | 18.5°C | 15.3°C | 25.2°C | 12.2°C | 85 mm | 85% | 5.5 m/s | 5.2 |
| 2005 | 20.8°C | 17.4°C | 13.9°C | 26.2°C | 9.4°C | 61 mm | 82% | 4.5 m/s | 5.2 |
| 2004 | 20.5°C | 17.2°C | 14.0°C | 27.2°C | 10.5°C | 56 mm | 84% | 4.5 m/s | 4.9 |
| 2003 | 21.4°C | 18.2°C | 15.1°C | 25.4°C | 10.8°C | 88 mm | 85% | 5.4 m/s | 5.3 |
| 2002 | 19.1°C | 15.9°C | 12.7°C | 25.7°C | 10.6°C | 60 mm | 84% | 5.1 m/s | 5.7 |
| 2001 | 20.0°C | 16.8°C | 13.5°C | 24.8°C | 11.1°C | 76 mm | 81% | 4.9 m/s | 5.9 |
| 2000 | 19.7°C | 16.7°C | 13.7°C | 22.8°C | 11.1°C | 96 mm | 83% | 5.1 m/s | 5.5 |
| 1999 | 22.0°C | 18.8°C | 15.6°C | 25.7°C | 12.2°C | 140 mm | 81% | 4.9 m/s | 5.7 |
| 1998 | 20.6°C | 17.4°C | 14.2°C | 26.6°C | 10.9°C | 137 mm | 85% | 5 m/s | 5.7 |
| 1997 | 21.2°C | 17.3°C | 13.3°C | 25.5°C | 10.6°C | 62 mm | 79% | 5 m/s | 6.4 |
| 1996 | 20.1°C | 16.9°C | 13.7°C | 24.6°C | 12.2°C | 100 mm | 82% | 6 m/s | 4.8 |
| 1995 | 22.4°C | 18.5°C | 14.6°C | 27.3°C | 10.0°C | 54 mm | 74% | 5.6 m/s | 5.6 |
| 1994 | 22.7°C | 19.1°C | 15.6°C | 27.6°C | 11.3°C | 33 mm | 81% | 5.4 m/s | 5.7 |
| 1993 | 18.7°C | 15.5°C | 12.3°C | 24.7°C | 9.5°C | 47 mm | 80% | 5.4 m/s | 4.9 |
| 1992 | 19.0°C | 15.5°C | 12.1°C | 23.7°C | 8.3°C | 49 mm | 79% | 4.9 m/s | 6.1 |
| 1991 | 22.4°C | 18.2°C | 13.9°C | 28.4°C | 8.9°C | 37 mm | 72% | 4.5 m/s | 5.9 |
| 1990 | 21.9°C | 18.1°C | 14.3°C | 28.5°C | 9.8°C | 28 mm | 76% | 4.4 m/s | 5.6 |
| 1989 | 20.4°C | 16.8°C | 13.2°C | 26.7°C | 10.1°C | 41 mm | 79% | 5.3 m/s | 6 |
| 1988 | 20.5°C | 16.9°C | 13.3°C | 25.0°C | 9.0°C | 78 mm | 86% | 4.5 m/s | 4.5 |
| 1987 | 21.7°C | 18.0°C | 14.3°C | 25.3°C | 10.0°C | 13 mm | 77% | 4.7 m/s | 5.8 |
| 1986 ❄️ | 18.6°C | 15.3°C | 12.0°C | 25.3°C | 9.1°C | 68 mm | 81% | 5.1 m/s | 5.1 |
| 1985 | 20.8°C | 17.1°C | 13.4°C | 24.4°C | 8.7°C | 52 mm | 84% | 5.9 m/s | 6 |
| 1984 | 21.6°C | 18.2°C | 14.8°C | 25.0°C | 10.7°C | 51 mm | 84% | 5.9 m/s | 5.1 |
| 1983 🌧️ | 20.3°C | 17.5°C | 14.7°C | 22.7°C | 12.8°C | 173 mm | 85% | 5.9 m/s | — |
| 1982 | 20.7°C | 17.1°C | 13.5°C | 24.7°C | 9.3°C | 46 mm | 84% | 5.5 m/s | — |
| 1981 | 20.3°C | 17.0°C | 13.7°C | 24.5°C | 11.8°C | 150 mm | 84% | 5.2 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 21°C with lows near 14.4°C (mean 17.7°C), based on 45 years of NASA POWER data.
July averages 76 mm of rainfall in Cape Breton, one of the drier months. The wettest on record was 173 mm in 1983.
The hottest July reached 29.1°C in 2025. The coldest dipped to 8.3°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.4°C. Daytime highs moved from 20.7°C to 22.1°C and overnight lows from 14°C to 15.5°C over the same span.
July is one of the warmer months of the year in Cape Breton and one of the drier months, so plan for around 21°C daytime highs and 14.4°C at night.
Not quite — July is the 11th coolest month in Cape Breton, averaging 17.7°C.
For July in Cape Breton, pack light layers you can adjust through the day, with typical highs of 21°C and lows of 14.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 82% — quite humid.
Average wind speed in July is 5 m/s. The windiest July on record averaged 6.5 m/s (2014).
The wettest July on record was 1983 with 173 mm. On average, July sees 76 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 Cape Breton behaves each July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
