Climate averages 1991–2020
Cabo Frio weather
in August.
A warm, fairly dry month: the 11th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Cabo Frio: daytime highs average 23.4°C and nights cool to about 19.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 28 mm of rain on roughly 6 days, which makes August a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 20 min on an average August day.
The nearest other city in this atlas is São Pedro da Aldeia (9 km away). In August its highs average 23.4°C, about as warm as Cabo Frio, with 31 mm of rain.
Among the 448 cities listed in Brazil, Cabo Frio ranks joint 342nd of 448 for the warmest August highs and joint 182nd of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Cabo Frio is 2.8°C cooler than that mean.
From August to September, average highs rise by 0.5°C to 23.8°C, and monthly rainfall rises from 28 mm to 47 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Cabo Frio climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.2°C23.6°C | 23.6°C | 88 | 8.3 | 13.413 h |
| February | 27.6°C23.9°C | 23.9°C | 56 | 5.8 | 12.913 h |
| March | 27.1°C23.7°C | 23.7°C | 104 | 10.8 | 12.212 h |
| April | 26.1°C22.6°C | 22.6°C | 57 | 9.3 | 11.612 h |
| May | 24.3°C20.7°C | 20.7°C | 58 | 10.2 | 11.011 h |
| June | 23.7°C19.8°C | 19.8°C | 34 | 6.5 | 10.811 h |
| July | 23.3°C19.3°C | 19.3°C | 35 | 6.6 | 10.911 h |
| August, selected | 23.4°C19.4°C | 19.4°C | 28 | 6.2 | 11.311 h |
| September | 23.8°C20.0°C | 20.0°C | 47 | 6.9 | 11.912 h |
| October | 24.6°C20.9°C | 20.9°C | 54 | 7.8 | 12.613 h |
| November | 25.1°C21.7°C | 21.7°C | 101 | 10.7 | 13.213 h |
| December | 26.5°C22.9°C | 22.9°C | 96 | 9.8 | 13.514 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- São Pedro da Aldeia in AugustBrazil · 9 kmHigh 23.4°C · Low 19.0°C · 31 mm rain
- Araruama in AugustBrazil · 32 kmHigh 23.4°C · Low 19.1°C · 42 mm rain
- Rio das Ostras in AugustBrazil · 41 kmHigh 25.0°C · Low 17.8°C · 34 mm rain
- Saquarema in AugustBrazil · 45 kmHigh 23.8°C · Low 18.4°C · 36 mm rain
- Macaé in AugustBrazil · 61 kmHigh 24.6°C · Low 18.2°C · 31 mm rain
- Maricá in AugustBrazil · 81 kmHigh 25.1°C · Low 18.2°C · 38 mm rain
- Nova Friburgo in AugustBrazil · 85 kmHigh 22.6°C · Low 13.7°C · 50 mm rain
- Itaboraí in AugustBrazil · 87 kmHigh 24.9°C · Low 15.8°C · 43 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cabo Frio) is explained once on the Cabo Frio year overview and on the Sources, method and limits page.