Climate averages 1991–2020
Petrolina weather
in July.
A hot, very dry month: the coolest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Petrolina: daytime highs average 29.0°C and nights cool to about 19.6°C. By daytime temperature it is the coolest month of the year.
Expect about 2.8 mm of rain on fewer than one day, which makes July a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 38 min on an average July day.
The nearest other city in this atlas is Casa Nova (58 km away). In July its highs average 29.7°C, 0.7°C warmer than Petrolina, with 2.2 mm of rain.
Among the 448 cities listed in Brazil, Petrolina ranks joint 83rd of 448 for the warmest July highs and joint 43rd of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Petrolina is 4.3°C warmer than that mean.
From July to August, average highs rise by 1.1°C to 30.1°C, and monthly rainfall falls from 2.8 mm to 1.2 mm.
The annual picture
July 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, selected | 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 | 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
July in nearby cities
- Casa Nova in JulyBrazil · 58 kmHigh 29.7°C · Low 20.3°C · 2.2 mm rain
- Senhor do Bonfim in JulyBrazil · 123 kmHigh 23.8°C · Low 17.2°C · 55 mm rain
- Campo Formoso in JulyBrazil · 125 kmHigh 23.9°C · Low 17.4°C · 55 mm rain
- Jacobina in JulyBrazil · 198 kmHigh 24.2°C · Low 17.7°C · 46 mm rain
- Araripina in JulyBrazil · 203 kmHigh 27.4°C · Low 18.1°C · 4.3 mm rain
- Paulo Afonso in JulyBrazil · 251 kmHigh 27.2°C · Low 19.6°C · 21 mm rain
- Irecê in JulyBrazil · 259 kmHigh 26.9°C · Low 17.2°C · 1.7 mm rain
- Crato in JulyBrazil · 269 kmHigh 29.2°C · Low 20.0°C · 7.2 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.