Climate averages 1991–2020
Petrolina weather
in August.
A hot, very dry month: the 10th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Petrolina: daytime highs average 30.1°C and nights cool to about 19.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 1.2 mm of rain on fewer than one day, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 48 min on an average August day.
The nearest other city in this atlas is Casa Nova (58 km away). In August its highs average 30.7°C, 0.7°C warmer than Petrolina, with almost no rain (under 1 mm).
Among the 448 cities listed in Brazil, Petrolina ranks joint 85th of 448 for the warmest August highs and 11th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Petrolina is 3.9°C warmer than that mean.
From August to September, average highs rise by 2.3°C to 32.4°C, and monthly rainfall falls from 1.2 mm to 1.0 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- Casa Nova in AugustBrazil · 58 kmHigh 30.7°C · Low 20.1°C · 0.7 mm rain
- Senhor do Bonfim in AugustBrazil · 123 kmHigh 24.6°C · Low 16.9°C · 47 mm rain
- Campo Formoso in AugustBrazil · 125 kmHigh 24.6°C · Low 17.1°C · 47 mm rain
- Jacobina in AugustBrazil · 198 kmHigh 24.8°C · Low 17.5°C · 44 mm rain
- Araripina in AugustBrazil · 203 kmHigh 28.9°C · Low 18.0°C · 1.4 mm rain
- Paulo Afonso in AugustBrazil · 251 kmHigh 28.0°C · Low 19.3°C · 18 mm rain
- Irecê in AugustBrazil · 259 kmHigh 27.8°C · Low 17.2°C · 0.9 mm rain
- Crato in AugustBrazil · 269 kmHigh 30.7°C · Low 19.9°C · 3.3 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.