Climate averages 1991–2020
Santa Inês weather
in December.
A hot, wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Santa Inês: daytime highs average 32.3°C and nights cool to about 24.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 120 mm of rain on roughly 15 days, which makes December a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 20 min on an average December day.
The nearest other city in this atlas is Bacabal (91 km away). In December its highs average 32.6°C, about as warm as Santa Inês, with 131 mm of rain.
Among the 448 cities listed in Brazil, Santa Inês ranks joint 23rd of 448 for the warmest December highs and joint 105th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Santa Inês is 3.8°C warmer than that mean.
From December to January, average highs fall by 2.1°C to 30.2°C, and monthly rainfall rises from 120 mm to 253 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
Santa Inês climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.2°C23.6°C | 23.6°C | 253 | 25.4 | 12.312 h |
| February | 29.6°C23.4°C | 23.4°C | 278 | 26.0 | 12.212 h |
| March | 29.4°C23.3°C | 23.3°C | 341 | 29.5 | 12.112 h |
| April | 29.4°C23.4°C | 23.4°C | 310 | 27.9 | 12.012 h |
| May | 29.8°C23.5°C | 23.5°C | 163 | 21.5 | 12.012 h |
| June | 30.3°C23.3°C | 23.3°C | 55 | 11.6 | 11.912 h |
| July | 31.2°C23.1°C | 23.1°C | 32 | 6.4 | 11.912 h |
| August | 33.0°C23.6°C | 23.6°C | 11 | 2.8 | 12.012 h |
| September | 34.0°C24.3°C | 24.3°C | 12 | 2.1 | 12.112 h |
| October | 34.4°C24.8°C | 24.8°C | 19 | 4.0 | 12.212 h |
| November | 33.7°C24.8°C | 24.8°C | 49 | 8.0 | 12.312 h |
| December, selected | 32.3°C24.5°C | 24.5°C | 120 | 15.3 | 12.312 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
- Bacabal in DecemberBrazil · 91 kmHigh 32.6°C · Low 24.5°C · 131 mm rain
- Pinheiro in DecemberBrazil · 132 kmHigh 32.2°C · Low 24.6°C · 66 mm rain
- São Luís in DecemberBrazil · 174 kmHigh 30.4°C · Low 25.5°C · 73 mm rain
- Codó in DecemberBrazil · 188 kmHigh 32.9°C · Low 24.3°C · 112 mm rain
- São José de Ribamar in DecemberBrazil · 192 kmHigh 29.3°C · Low 25.8°C · 75 mm rain
- Barra do Corda in DecemberBrazil · 205 kmHigh 31.2°C · Low 23.5°C · 135 mm rain
- Chapadinha in DecemberBrazil · 224 kmHigh 33.8°C · Low 24.7°C · 63 mm rain
- Paragominas in DecemberBrazil · 232 kmHigh 32.3°C · Low 23.7°C · 113 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 Santa Inês) is explained once on the Santa Inês year overview and on the Sources, method and limits page.