Temperature
Cold by day, cold at night.
Cape Breton Island is usually most comfortable from June to September. Typical daytime highs range from 29–73°F across the year. Rain is frequent in many months.

Cold by day, cold at night.
Some precipitation is expected this month.
Sunshine is limited, with cloud often dominating.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 34° and nights feel near 29°.
Mostly cloudy skies this month.
Breezy November days can feel brisker in open spots.
November late afternoons are around 41°F, easing to about 39°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 29 | 15 | 4.8 | 14 | 4.1 | 83 |
| Feb | 29 | 14 | 4.5 | 12 | 6.1 | 82 |
| Mar | 36 | 21 | 4.2 | 13 | 7.5 | 78 |
| Apr | 46 | 31 | 3.8 | 13 | 8.3 | 77 |
| May | 58 | 40 | 3.1 | 11 | 9.3 | 75 |
| Jun | 66 | 49 | 3.6 | 12 | 10.3 | 78 |
| Jul | 73 | 58 | 4.1 | 13 | 10.8 | 81 |
| Aug | 73 | 58 | 4.0 | 12 | 10.3 | 81 |
| Sep | 66 | 52 | 4.2 | 11 | 8.6 | 82 |
| Oct | 55 | 43 | 5.0 | 13 | 6.5 | 82 |
| Nov | 45 | 34 | 4.9 | 14 | 4.6 | 83 |
| Dec | 36 | 24 | 5.6 | 15 | 3.4 | 83 |
Similar climates
Want a side-by-side climate view? Compare Cape Breton Island with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology