Climate averages 1991–2020
Petrolina weather
in January.
A hot, moderately wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Petrolina: daytime highs average 32.6°C and nights cool to about 23.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 80 mm of rain on roughly 9 days, which makes January a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 36 min on an average January day.
The nearest other city in this atlas is Casa Nova (58 km away). In January its highs average 32.3°C, about as warm as Petrolina, with 97 mm of rain.
Among the 448 cities listed in Brazil, Petrolina ranks 8th of 448 for the warmest January highs and joint 51st of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Petrolina is 4.1°C warmer than that mean.
From January to February, average highs fall by 0.3°C to 32.3°C, and monthly rainfall falls from 80 mm to 67 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Casa Nova in JanuaryBrazil · 58 kmHigh 32.3°C · Low 23.7°C · 97 mm rain
- Senhor do Bonfim in JanuaryBrazil · 123 kmHigh 29.7°C · Low 20.6°C · 77 mm rain
- Campo Formoso in JanuaryBrazil · 125 kmHigh 29.5°C · Low 20.6°C · 77 mm rain
- Jacobina in JanuaryBrazil · 198 kmHigh 30.0°C · Low 21.2°C · 81 mm rain
- Araripina in JanuaryBrazil · 203 kmHigh 29.6°C · Low 21.6°C · 162 mm rain
- Paulo Afonso in JanuaryBrazil · 251 kmHigh 33.5°C · Low 22.8°C · 38 mm rain
- Irecê in JanuaryBrazil · 259 kmHigh 29.9°C · Low 20.3°C · 100 mm rain
- Crato in JanuaryBrazil · 269 kmHigh 30.9°C · Low 22.4°C · 126 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.