Climate averages 1991–2020
Ribeirão Preto weather
in September.
A hot, moderately wet month: the 2nd warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Ribeirão Preto: daytime highs average 30.4°C and nights cool to about 18.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 67 mm of rain on roughly 7 days, which makes September a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Sertãozinho (19 km away). In September its highs average 30.6°C, about as warm as Ribeirão Preto, with 63 mm of rain.
Among the 448 cities listed in Brazil, Ribeirão Preto ranks joint 117th of 448 for the warmest September highs and joint 244th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Ribeirão Preto is 2.9°C warmer than that mean.
From September to October, average highs rise by 0.1°C to 30.5°C, and monthly rainfall rises from 67 mm to 113 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
Ribeirão 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°C20.9°C | 20.9°C | 254 | 23.1 | 13.313 h |
| February | 29.1°C20.8°C | 20.8°C | 177 | 18.5 | 12.813 h |
| March | 28.6°C20.2°C | 20.2°C | 158 | 18.5 | 12.212 h |
| April | 28.0°C18.6°C | 18.6°C | 65 | 9.1 | 11.612 h |
| May | 26.0°C15.8°C | 15.8°C | 45 | 5.6 | 11.111 h |
| June | 25.7°C14.4°C | 14.4°C | 27 | 2.9 | 10.911 h |
| July | 26.2°C14.3°C | 14.3°C | 19 | 2.3 | 11.011 h |
| August | 28.6°C15.9°C | 15.9°C | 19 | 2.8 | 11.411 h |
| September, selected | 30.4°C18.6°C | 18.6°C | 67 | 6.8 | 12.012 h |
| October | 30.5°C20.0°C | 20.0°C | 113 | 12.9 | 12.613 h |
| November | 29.2°C20.1°C | 20.1°C | 168 | 17.4 | 13.113 h |
| December | 28.9°C20.8°C | 20.8°C | 221 | 22.3 | 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
- Sertãozinho in SeptemberBrazil · 19 kmHigh 30.6°C · Low 18.8°C · 63 mm rain
- Jaboticabal in SeptemberBrazil · 54 kmHigh 29.8°C · Low 18.1°C · 70 mm rain
- Bebedouro in SeptemberBrazil · 74 kmHigh 30.5°C · Low 18.9°C · 61 mm rain
- Matão in SeptemberBrazil · 75 kmHigh 29.6°C · Low 18.2°C · 71 mm rain
- Araraquara in SeptemberBrazil · 78 kmHigh 28.6°C · Low 17.3°C · 67 mm rain
- Franca in SeptemberBrazil · 83 kmHigh 27.8°C · Low 16.4°C · 64 mm rain
- São Sebastião do Paraíso in SeptemberBrazil · 90 kmHigh 27.2°C · Low 16.5°C · 76 mm rain
- São Carlos in SeptemberBrazil · 94 kmHigh 27.5°C · Low 15.8°C · 65 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 Ribeirão Preto) is explained once on the Ribeirão Preto year overview and on the Sources, method and limits page.