Climate averages 1991–2020
São José do Rio Preto weather
in September.
A hot, moderately wet month: the 2nd warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in São José do Rio Preto: daytime highs average 30.7°C and nights cool to about 19.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 59 mm of rain on roughly 7 days, which makes September a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average September day.
The nearest other city in this atlas is Catanduva (55 km away). In September its highs average 30.5°C, about as warm as São José do Rio Preto, with 62 mm of rain.
Among the 448 cities listed in Brazil, São José do Rio Preto ranks joint 105th of 448 for the warmest September highs and joint 203rd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; São José do Rio Preto is 3.2°C warmer than that mean.
From September to October, average highs rise by 0.1°C to 30.8°C, and monthly rainfall rises from 59 mm to 119 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
São José do Rio Preto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C21.7°C | 21.7°C | 271 | 23.5 | 13.213 h |
| February | 29.1°C21.6°C | 21.6°C | 204 | 20.7 | 12.813 h |
| March | 28.6°C21.1°C | 21.1°C | 184 | 20.1 | 12.212 h |
| April | 28.2°C19.6°C | 19.6°C | 70 | 9.4 | 11.612 h |
| May | 26.2°C16.8°C | 16.8°C | 47 | 4.9 | 11.111 h |
| June | 25.9°C15.9°C | 15.9°C | 26 | 3.1 | 10.911 h |
| July | 26.5°C15.8°C | 15.8°C | 15 | 2.3 | 11.011 h |
| August | 29.0°C17.2°C | 17.2°C | 19 | 2.6 | 11.411 h |
| September, selected | 30.7°C19.4°C | 19.4°C | 59 | 6.9 | 12.012 h |
| October | 30.8°C20.8°C | 20.8°C | 119 | 13.2 | 12.613 h |
| November | 29.4°C20.8°C | 20.8°C | 172 | 17.6 | 13.113 h |
| December | 29.0°C21.5°C | 21.5°C | 234 | 22.9 | 13.413 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
- Catanduva in SeptemberBrazil · 55 kmHigh 30.5°C · Low 19.0°C · 62 mm rain
- Votuporanga in SeptemberBrazil · 76 kmHigh 31.1°C · Low 19.5°C · 54 mm rain
- Barretos in SeptemberBrazil · 89 kmHigh 31.0°C · Low 19.5°C · 55 mm rain
- Bebedouro in SeptemberBrazil · 95 kmHigh 30.5°C · Low 18.9°C · 61 mm rain
- Lins in SeptemberBrazil · 103 kmHigh 30.3°C · Low 18.8°C · 61 mm rain
- Fernandópolis in SeptemberBrazil · 108 kmHigh 31.0°C · Low 19.6°C · 52 mm rain
- Birigui in SeptemberBrazil · 112 kmHigh 30.8°C · Low 18.9°C · 58 mm rain
- Araçatuba in SeptemberBrazil · 118 kmHigh 31.0°C · Low 19.2°C · 61 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 São José do Rio Preto) is explained once on the São José do Rio Preto year overview and on the Sources, method and limits page.