Climate averages 1991–2020
São Pedro da Aldeia weather
in December.
A warm, wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in São Pedro da Aldeia: daytime highs average 26.5°C and nights cool to about 22.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 142 mm of rain on roughly 13 days, which makes December a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 30 min on an average December day.
The nearest other city in this atlas is Cabo Frio (9 km away). In December its highs average 26.5°C, about as warm as São Pedro da Aldeia, with 96 mm of rain.
Among the 448 cities listed in Brazil, São Pedro da Aldeia ranks joint 357th of 448 for the warmest December highs and 129th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; São Pedro da Aldeia is 1.9°C cooler than that mean.
From December to January, average highs rise by 0.8°C to 27.3°C, and monthly rainfall falls from 142 mm to 130 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
São Pedro da Aldeia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C23.4°C | 23.4°C | 130 | 11.0 | 13.413 h |
| February | 27.7°C23.7°C | 23.7°C | 88 | 8.2 | 12.913 h |
| March | 27.1°C23.4°C | 23.4°C | 125 | 13.1 | 12.212 h |
| April | 26.0°C22.2°C | 22.2°C | 64 | 10.0 | 11.612 h |
| May | 24.1°C20.3°C | 20.3°C | 57 | 9.7 | 11.011 h |
| June | 23.6°C19.3°C | 19.3°C | 32 | 6.0 | 10.811 h |
| July | 23.2°C18.8°C | 18.8°C | 33 | 6.6 | 10.911 h |
| August | 23.4°C19.0°C | 19.0°C | 31 | 6.4 | 11.311 h |
| September | 23.9°C19.7°C | 19.7°C | 56 | 8.3 | 11.912 h |
| October | 24.7°C20.7°C | 20.7°C | 75 | 9.0 | 12.613 h |
| November | 25.2°C21.4°C | 21.4°C | 139 | 13.3 | 13.213 h |
| December, selected | 26.5°C22.7°C | 22.7°C | 142 | 13.3 | 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
- Cabo Frio in DecemberBrazil · 9 kmHigh 26.5°C · Low 22.9°C · 96 mm rain
- Araruama in DecemberBrazil · 25 kmHigh 26.6°C · Low 22.9°C · 189 mm rain
- Saquarema in DecemberBrazil · 38 kmHigh 27.4°C · Low 22.7°C · 122 mm rain
- Rio das Ostras in DecemberBrazil · 38 kmHigh 28.4°C · Low 22.4°C · 222 mm rain
- Macaé in DecemberBrazil · 60 kmHigh 28.0°C · Low 22.6°C · 149 mm rain
- Maricá in DecemberBrazil · 74 kmHigh 29.0°C · Low 23.0°C · 123 mm rain
- Nova Friburgo in DecemberBrazil · 76 kmHigh 26.2°C · Low 19.1°C · 352 mm rain
- Itaboraí in DecemberBrazil · 78 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 São Pedro da Aldeia) is explained once on the São Pedro da Aldeia year overview and on the Sources, method and limits page.