Temperature
Warm by day, mild at night.
Cabo Frio is usually most comfortable in July and August. Typical daytime highs range from 76–84°F across the year. Rain varies by season.

Warm by day, mild at night.
Rain is frequent. About 16 wet days, more than in most months.
Cloudier spells limit sunshine.
Warm days, with humid periods.
In November, afternoons feel about 79° and nights feel near 74°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 77°F, easing to about 74°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 83 | 75 | 7.0 | 16 | 10.4 | 83 |
| Feb | 84 | 75 | 4.9 | 12 | 10.7 | 83 |
| Mar | 83 | 74 | 6.5 | 17 | 10.2 | 83 |
| Apr | 81 | 72 | 3.4 | 12 | 10.2 | 82 |
| May | 78 | 68 | 2.9 | 11 | 9.5 | 81 |
| Jun | 77 | 66 | 1.7 | 7 | 9.3 | 82 |
| Jul | 76 | 65 | 1.8 | 8 | 8.9 | 80 |
| Aug | 76 | 66 | 1.7 | 7 | 9.7 | 79 |
| Sep | 77 | 67 | 2.9 | 10 | 9.7 | 79 |
| Oct | 78 | 70 | 3.7 | 11 | 10.1 | 81 |
| Nov | 79 | 71 | 6.8 | 16 | 10.2 | 82 |
| Dec | 82 | 74 | 7.4 | 17 | 10.7 | 84 |
Similar climates
Want a side-by-side climate view? Compare Cabo Frio with Rio de Janeiro.
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