Climate averages 1991–2020
São Cristóvão weather
in December.
A hot, fairly dry month: the 4th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in São Cristóvão: daytime highs average 28.8°C and nights cool to about 24.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 33 mm of rain on roughly 10 days, which makes December a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average December day.
The nearest other city in this atlas is Aracaju (19 km away). In December its highs average 29.1°C, about as warm as São Cristóvão, with 30 mm of rain.
Among the 448 cities listed in Brazil, São Cristóvão ranks joint 192nd of 448 for the warmest December highs and joint 44th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; São Cristóvão is 0.3°C warmer than that mean.
From December to January, average highs rise by 0.1°C to 28.9°C, and monthly rainfall rises from 33 mm to 56 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 Cristóvão climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C24.4°C | 24.4°C | 56 | 15.1 | 12.713 h |
| February | 29.0°C24.6°C | 24.6°C | 64 | 16.6 | 12.512 h |
| March | 29.2°C24.7°C | 24.7°C | 71 | 18.1 | 12.212 h |
| April | 28.4°C24.3°C | 24.3°C | 112 | 20.3 | 11.912 h |
| May | 27.2°C23.6°C | 23.6°C | 157 | 22.9 | 11.612 h |
| June | 26.0°C22.7°C | 22.7°C | 148 | 24.0 | 11.511 h |
| July | 25.3°C22.0°C | 22.0°C | 125 | 23.9 | 11.512 h |
| August | 25.2°C21.8°C | 21.8°C | 98 | 22.1 | 11.712 h |
| September | 26.0°C22.3°C | 22.3°C | 64 | 17.2 | 12.012 h |
| October | 27.2°C23.2°C | 23.2°C | 52 | 13.9 | 12.312 h |
| November | 28.1°C23.8°C | 23.8°C | 41 | 11.1 | 12.613 h |
| December, selected | 28.8°C24.3°C | 24.3°C | 33 | 10.1 | 12.813 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
- Aracaju in DecemberBrazil · 19 kmHigh 29.1°C · Low 24.4°C · 30 mm rain
- Itabaiana in DecemberBrazil · 44 kmHigh 31.2°C · Low 22.5°C · 32 mm rain
- Lagarto in DecemberBrazil · 50 kmHigh 31.3°C · Low 22.6°C · 33 mm rain
- Arapiraca in DecemberBrazil · 152 kmHigh 32.0°C · Low 22.4°C · 17 mm rain
- Alagoinhas in DecemberBrazil · 182 kmHigh 31.7°C · Low 22.7°C · 45 mm rain
- Serrinha in DecemberBrazil · 209 kmHigh 31.7°C · Low 21.5°C · 37 mm rain
- Paulo Afonso in DecemberBrazil · 210 kmHigh 33.9°C · Low 22.6°C · 19 mm rain
- Dias d'Ávila in DecemberBrazil · 214 kmHigh 31.2°C · Low 23.4°C · 59 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 Cristóvão) is explained once on the São Cristóvão year overview and on the Sources, method and limits page.