Climate averages 1991–2020
Itapecerica da Serra weather
in September.
A warm, 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 Itapecerica da Serra: daytime highs average 22.5°C and nights cool to about 13.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 108 mm of rain on roughly 13 days, which makes September a 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 Embu das Artes (8 km away). In September its highs average 24.0°C, 1.6°C warmer than Itapecerica da Serra, with 108 mm of rain.
Among the 448 cities listed in Brazil, Itapecerica da Serra ranks joint 388th of 448 for the warmest September highs and joint 351st of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Itapecerica da Serra is 5.1°C cooler than that mean.
From September to October, average highs rise by 1.0°C to 23.4°C, and monthly rainfall rises from 108 mm to 138 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
Itapecerica da Serra climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.2°C18.1°C | 18.1°C | 288 | 26.2 | 13.413 h |
| February | 25.5°C18.2°C | 18.2°C | 242 | 22.4 | 12.913 h |
| March | 24.5°C17.4°C | 17.4°C | 219 | 23.4 | 12.212 h |
| April | 23.2°C15.7°C | 15.7°C | 94 | 14.1 | 11.612 h |
| May | 20.7°C13.1°C | 13.1°C | 76 | 10.5 | 11.011 h |
| June | 20.3°C11.8°C | 11.8°C | 60 | 7.5 | 10.711 h |
| July | 20.1°C11.1°C | 11.1°C | 68 | 7.6 | 10.811 h |
| August | 21.3°C11.7°C | 11.7°C | 51 | 7.0 | 11.311 h |
| September, selected | 22.5°C13.3°C | 13.3°C | 108 | 12.5 | 11.912 h |
| October | 23.4°C14.8°C | 14.8°C | 138 | 16.7 | 12.613 h |
| November | 23.3°C15.5°C | 15.5°C | 186 | 20.1 | 13.213 h |
| December | 24.7°C17.2°C | 17.2°C | 222 | 23.2 | 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
- Embu das Artes in SeptemberBrazil · 8 kmHigh 24.0°C · Low 14.4°C · 108 mm rain
- Taboão da Serra in SeptemberBrazil · 12 kmHigh 23.7°C · Low 14.1°C · 108 mm rain
- Osasco in SeptemberBrazil · 21 kmHigh 24.5°C · Low 14.4°C · 84 mm rain
- Barueri in SeptemberBrazil · 23 kmHigh 24.8°C · Low 14.7°C · 86 mm rain
- São Paulo in SeptemberBrazil · 29 kmHigh 24.2°C · Low 14.5°C · 84 mm rain
- São Bernardo do Campo in SeptemberBrazil · 29 kmHigh 23.0°C · Low 14.2°C · 129 mm rain
- Santana de Parnaíba in SeptemberBrazil · 31 kmHigh 25.0°C · Low 14.8°C · 86 mm rain
- São Caetano do Sul in SeptemberBrazil · 32 kmHigh 23.7°C · Low 14.4°C · 90 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 Itapecerica da Serra) is explained once on the Itapecerica da Serra year overview and on the Sources, method and limits page.
Taboão da Serra and Embu das Artes lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.