Climate averages 1991–2020
Barretos 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 Barretos: daytime highs average 31.0°C and nights cool to about 19.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 55 mm of rain on roughly 6 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 Bebedouro (45 km away). In September its highs average 30.5°C, 0.5°C cooler than Barretos, with 61 mm of rain.
Among the 448 cities listed in Brazil, Barretos ranks joint 97th of 448 for the warmest September highs and 189th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Barretos is 3.5°C warmer than that mean.
From September to October, average highs rise by 0.1°C to 31.1°C, and monthly rainfall rises from 55 mm to 105 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
Barretos climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.0°C21.5°C | 21.5°C | 259 | 23.1 | 13.213 h |
| February | 29.2°C21.4°C | 21.4°C | 190 | 19.4 | 12.813 h |
| March | 28.8°C21.0°C | 21.0°C | 171 | 19.2 | 12.212 h |
| April | 28.4°C19.5°C | 19.5°C | 63 | 8.6 | 11.612 h |
| May | 26.4°C16.7°C | 16.7°C | 35 | 5.0 | 11.211 h |
| June | 26.1°C15.6°C | 15.6°C | 21 | 2.5 | 10.911 h |
| July | 26.7°C15.5°C | 15.5°C | 13 | 1.8 | 11.011 h |
| August | 29.1°C17.1°C | 17.1°C | 15 | 2.2 | 11.411 h |
| September, selected | 31.0°C19.5°C | 19.5°C | 55 | 6.2 | 12.012 h |
| October | 31.1°C20.9°C | 20.9°C | 105 | 12.5 | 12.613 h |
| November | 29.6°C20.9°C | 20.9°C | 160 | 17.7 | 13.113 h |
| December | 29.1°C21.4°C | 21.4°C | 226 | 22.7 | 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
- Bebedouro in SeptemberBrazil · 45 kmHigh 30.5°C · Low 18.9°C · 61 mm rain
- Catanduva in SeptemberBrazil · 77 kmHigh 30.5°C · Low 19.0°C · 62 mm rain
- Jaboticabal in SeptemberBrazil · 82 kmHigh 29.8°C · Low 18.1°C · 70 mm rain
- Sertãozinho in SeptemberBrazil · 88 kmHigh 30.6°C · Low 18.8°C · 63 mm rain
- São José do Rio Preto in SeptemberBrazil · 89 kmHigh 30.7°C · Low 19.4°C · 59 mm rain
- Ribeirão Preto in SeptemberBrazil · 105 kmHigh 30.4°C · Low 18.6°C · 67 mm rain
- Uberaba in SeptemberBrazil · 112 kmHigh 30.1°C · Low 19.3°C · 58 mm rain
- Matão in SeptemberBrazil · 118 kmHigh 29.6°C · Low 18.2°C · 71 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 Barretos) is explained once on the Barretos year overview and on the Sources, method and limits page.