Climate averages 1991–2020
Cabo Frio weather
in December.
A warm, wet month: the 4th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Cabo Frio: daytime highs average 26.5°C and nights cool to about 22.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 96 mm of rain on roughly 10 days, which makes December a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 30 min on an average December day.
The nearest other city in this atlas is São Pedro da Aldeia (9 km away). In December its highs average 26.5°C, about as warm as Cabo Frio, with 142 mm of rain.
Among the 448 cities listed in Brazil, Cabo Frio ranks joint 357th of 448 for the warmest December highs and joint 85th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Cabo Frio is 2.0°C cooler than that mean.
From December to January, average highs rise by 0.7°C to 27.2°C, and monthly rainfall falls from 96 mm to 88 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- São Pedro da Aldeia in DecemberBrazil · 9 kmHigh 26.5°C · Low 22.7°C · 142 mm rain
- Araruama in DecemberBrazil · 32 kmHigh 26.6°C · Low 22.9°C · 189 mm rain
- Rio das Ostras in DecemberBrazil · 41 kmHigh 28.4°C · Low 22.4°C · 222 mm rain
- Saquarema in DecemberBrazil · 45 kmHigh 27.4°C · Low 22.7°C · 122 mm rain
- Macaé in DecemberBrazil · 61 kmHigh 28.0°C · Low 22.6°C · 149 mm rain
- Maricá in DecemberBrazil · 81 kmHigh 29.0°C · Low 23.0°C · 123 mm rain
- Nova Friburgo in DecemberBrazil · 85 kmHigh 26.2°C · Low 19.1°C · 352 mm rain
- Itaboraí in DecemberBrazil · 87 kmHigh 28.7°C · Low 21.6°C · 255 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.