Climate averages 1991–2020
São Roque weather
in September.
A warm, moderately wet month: the 8th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in São Roque: daytime highs average 24.6°C and nights cool to about 14.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 82 mm of rain on roughly 9 days, which makes September a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 56 min on an average September day.
The nearest other city in this atlas is Ibiúna (17 km away). In September its highs average 23.5°C, 1.1°C cooler than São Roque, with 99 mm of rain.
Among the 448 cities listed in Brazil, São Roque ranks 346th of 448 for the warmest September highs and joint 292nd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; São Roque is 2.9°C cooler than that mean.
From September to October, average highs rise by 0.9°C to 25.5°C, and monthly rainfall rises from 82 mm to 108 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 Roque climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.5°C19.0°C | 19.0°C | 229 | 22.2 | 13.413 h |
| February | 26.8°C19.1°C | 19.1°C | 162 | 19.0 | 12.913 h |
| March | 25.9°C18.3°C | 18.3°C | 125 | 17.9 | 12.212 h |
| April | 24.7°C16.7°C | 16.7°C | 60 | 8.5 | 11.612 h |
| May | 22.1°C14.0°C | 14.0°C | 59 | 6.9 | 11.011 h |
| June | 21.4°C12.9°C | 12.9°C | 48 | 5.2 | 10.711 h |
| July | 21.5°C12.2°C | 12.2°C | 45 | 4.9 | 10.811 h |
| August | 23.2°C12.9°C | 12.9°C | 37 | 4.7 | 11.311 h |
| September, selected | 24.6°C14.6°C | 14.6°C | 82 | 8.9 | 11.912 h |
| October | 25.5°C16.1°C | 16.1°C | 108 | 13.0 | 12.613 h |
| November | 25.3°C16.7°C | 16.7°C | 141 | 15.6 | 13.213 h |
| December | 26.3°C18.2°C | 18.2°C | 178 | 20.0 | 13.614 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
- Ibiúna in SeptemberBrazil · 17 kmHigh 23.5°C · Low 14.0°C · 99 mm rain
- Santana de Parnaíba in SeptemberBrazil · 24 kmHigh 25.0°C · Low 14.8°C · 86 mm rain
- Barueri in SeptemberBrazil · 27 kmHigh 24.8°C · Low 14.7°C · 86 mm rain
- Votorantim in SeptemberBrazil · 31 kmHigh 26.3°C · Low 15.5°C · 75 mm rain
- Embu das Artes in SeptemberBrazil · 32 kmHigh 24.0°C · Low 14.4°C · 108 mm rain
- Sorocaba in SeptemberBrazil · 33 kmHigh 25.9°C · Low 15.0°C · 75 mm rain
- Itu in SeptemberBrazil · 34 kmHigh 26.3°C · Low 15.3°C · 82 mm rain
- Osasco in SeptemberBrazil · 35 kmHigh 24.5°C · Low 14.4°C · 84 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 Roque) is explained once on the São Roque year overview and on the Sources, method and limits page.