Climate averages 1991–2020
São Cristóvão weather
by month.
See how the year changes. March has the highest average daily maximum; December has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year São Cristóvão averages a daytime high of 27.4°C and a nighttime low of 23.5°C, with about 1,020 mm of rain on roughly 215 days. March is the warmest month (average high 29.2°C) and August the coolest (25.2°C). May is the wettest month with 157 mm; December is the driest with 33 mm.
The annual picture
A year in São Cristóvão
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 | 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
Nearby cities
- AracajuBrazil · 19 kmHigh 27.6°C · Low 23.6°C · 1,116 mm rain a year
- ItabaianaBrazil · 44 kmHigh 28.7°C · Low 21.4°C · 674 mm rain a year
- LagartoBrazil · 50 kmHigh 28.9°C · Low 21.6°C · 656 mm rain a year
- ArapiracaBrazil · 152 kmHigh 29.2°C · Low 21.3°C · 525 mm rain a year
- AlagoinhasBrazil · 182 kmHigh 29.3°C · Low 21.5°C · 710 mm rain a year
- SerrinhaBrazil · 209 kmHigh 29.4°C · Low 20.4°C · 463 mm rain a year
- Paulo AfonsoBrazil · 210 kmHigh 31.3°C · Low 21.5°C · 288 mm rain a year
- Dias d'ÁvilaBrazil · 214 kmHigh 28.9°C · Low 22.4°C · 1,035 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -11.00°, -37.20° (2 km from the city centre), adjusted down by 0.1°C for the difference between the city's elevation (38 m) and the cell's (27 m). Rain comes from the 0.25° cell at -11.00°, -37.25°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.