Climate averages 1991–2020
Petrolina weather
in December.
A hot, moderately wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Petrolina: daytime highs average 33.4°C and nights cool to about 23.2°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 50 mm of rain on roughly 6 days, which makes December a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 40 min on an average December day.
The nearest other city in this atlas is Casa Nova (58 km away). In December its highs average 33.2°C, about as warm as Petrolina, with 56 mm of rain.
Among the 448 cities listed in Brazil, Petrolina ranks 15th of 448 for the warmest December highs and 63rd of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Petrolina is 5.0°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 32.6°C, and monthly rainfall rises from 50 mm to 80 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
Petrolina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.6°C23.0°C | 23.0°C | 80 | 8.7 | 12.613 h |
| February | 32.3°C22.9°C | 22.9°C | 67 | 9.5 | 12.412 h |
| March | 32.1°C22.9°C | 22.9°C | 79 | 10.1 | 12.212 h |
| April | 31.9°C22.6°C | 22.6°C | 32 | 6.0 | 11.912 h |
| May | 31.0°C21.8°C | 21.8°C | 10 | 2.0 | 11.712 h |
| June | 29.5°C20.6°C | 20.6°C | 3.4 | 0.7 | 11.612 h |
| July | 29.0°C19.6°C | 19.6°C | 2.8 | 0.4 | 11.612 h |
| August | 30.1°C19.4°C | 19.4°C | 1.2 | 0.2 | 11.812 h |
| September | 32.4°C20.3°C | 20.3°C | 1.0 | 0.1 | 12.012 h |
| October | 34.0°C21.8°C | 21.8°C | 10 | 1.5 | 12.312 h |
| November | 33.8°C22.8°C | 22.8°C | 32 | 3.9 | 12.513 h |
| December, selected | 33.4°C23.2°C | 23.2°C | 50 | 6.2 | 12.713 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
- Casa Nova in DecemberBrazil · 58 kmHigh 33.2°C · Low 24.0°C · 56 mm rain
- Senhor do Bonfim in DecemberBrazil · 123 kmHigh 29.7°C · Low 20.3°C · 66 mm rain
- Campo Formoso in DecemberBrazil · 125 kmHigh 29.6°C · Low 20.3°C · 66 mm rain
- Jacobina in DecemberBrazil · 198 kmHigh 29.9°C · Low 21.0°C · 65 mm rain
- Araripina in DecemberBrazil · 203 kmHigh 31.4°C · Low 22.3°C · 54 mm rain
- Paulo Afonso in DecemberBrazil · 251 kmHigh 33.9°C · Low 22.6°C · 19 mm rain
- Irecê in DecemberBrazil · 259 kmHigh 30.0°C · Low 20.4°C · 82 mm rain
- Crato in DecemberBrazil · 269 kmHigh 32.9°C · Low 23.0°C · 36 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 Petrolina) is explained once on the Petrolina year overview and on the Sources, method and limits page.