Climate averages 1991–2020
Casa Nova weather
in September.
A hot, very dry month: the 4th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Casa Nova: daytime highs average 32.8°C and nights cool to about 21.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 1.0 mm of rain on fewer than one day, which makes September a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average September day.
The nearest other city in this atlas is Petrolina (58 km away). In September its highs average 32.4°C, about as warm as Casa Nova, with 1.0 mm of rain.
Among the 448 cities listed in Brazil, Casa Nova ranks 53rd of 448 for the warmest September highs and joint 4th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Casa Nova is 5.3°C warmer than that mean.
From September to October, average highs rise by 1.4°C to 34.2°C, and monthly rainfall rises from 1.0 mm to 9.5 mm.
The annual picture
September 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
Casa Nova climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.3°C23.7°C | 23.7°C | 97 | 10.4 | 12.613 h |
| February | 31.9°C23.5°C | 23.5°C | 82 | 11.1 | 12.412 h |
| March | 31.8°C23.6°C | 23.6°C | 96 | 11.9 | 12.212 h |
| April | 31.8°C23.3°C | 23.3°C | 43 | 7.4 | 11.912 h |
| May | 31.3°C22.5°C | 22.5°C | 10 | 2.3 | 11.712 h |
| June | 30.1°C21.3°C | 21.3°C | 2.4 | 0.4 | 11.612 h |
| July | 29.7°C20.3°C | 20.3°C | 2.2 | 0.2 | 11.612 h |
| August | 30.7°C20.1°C | 20.1°C | 0.7 | 0.1 | 11.812 h |
| September, selected | 32.8°C21.2°C | 21.2°C | 1.0 | 0.1 | 12.012 h |
| October | 34.2°C22.8°C | 22.8°C | 9.5 | 1.5 | 12.312 h |
| November | 33.8°C23.7°C | 23.7°C | 34 | 4.5 | 12.513 h |
| December | 33.2°C24.0°C | 24.0°C | 56 | 6.9 | 12.613 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
September in nearby cities
- Petrolina in SeptemberBrazil · 58 kmHigh 32.4°C · Low 20.3°C · 1.0 mm rain
- Campo Formoso in SeptemberBrazil · 165 kmHigh 27.0°C · Low 17.8°C · 29 mm rain
- Senhor do Bonfim in SeptemberBrazil · 167 kmHigh 27.1°C · Low 17.7°C · 29 mm rain
- Araripina in SeptemberBrazil · 185 kmHigh 31.1°C · Low 19.3°C · 1.2 mm rain
- Jacobina in SeptemberBrazil · 229 kmHigh 27.2°C · Low 18.3°C · 29 mm rain
- Picos in SeptemberBrazil · 239 kmHigh 35.7°C · Low 24.2°C · 1.7 mm rain
- Irecê in SeptemberBrazil · 256 kmHigh 30.0°C · Low 18.3°C · 2.2 mm rain
- Crato in SeptemberBrazil · 276 kmHigh 32.7°C · Low 21.0°C · 2.1 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 Casa Nova) is explained once on the Casa Nova year overview and on the Sources, method and limits page.