Climate averages 1991–2020
Praia Grande weather
in September.
A warm, wet month: the 9th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Praia Grande: daytime highs average 24.3°C and nights cool to about 17.8°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 126 mm of rain on roughly 14 days, which makes September a wet month (the 5th 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 São Vicente (5 km away). In September its highs average 24.5°C, about as warm as Praia Grande, with 126 mm of rain.
Among the 448 cities listed in Brazil, Praia Grande ranks 354th of 448 for the warmest September highs and joint 370th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Praia Grande is 3.3°C cooler than that mean.
From September to October, average highs rise by 1.1°C to 25.4°C, and monthly rainfall rises from 126 mm to 153 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
Praia Grande climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C23.2°C | 23.2°C | 333 | 25.9 | 13.413 h |
| February | 29.0°C23.3°C | 23.3°C | 303 | 22.4 | 12.913 h |
| March | 28.0°C22.6°C | 22.6°C | 274 | 24.2 | 12.212 h |
| April | 26.8°C20.9°C | 20.9°C | 131 | 14.9 | 11.512 h |
| May | 24.6°C18.4°C | 18.4°C | 105 | 12.4 | 11.011 h |
| June | 24.0°C17.0°C | 17.0°C | 77 | 9.2 | 10.711 h |
| July | 23.4°C16.1°C | 16.1°C | 87 | 9.3 | 10.811 h |
| August | 23.7°C16.5°C | 16.5°C | 71 | 9.5 | 11.311 h |
| September, selected | 24.3°C17.8°C | 17.8°C | 126 | 14.0 | 11.912 h |
| October | 25.4°C19.4°C | 19.4°C | 153 | 17.2 | 12.613 h |
| November | 26.1°C20.3°C | 20.3°C | 190 | 19.2 | 13.313 h |
| December | 27.8°C22.1°C | 22.1°C | 234 | 22.2 | 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
- São Vicente in SeptemberBrazil · 5 kmHigh 24.5°C · Low 17.9°C · 126 mm rain
- Santos in SeptemberBrazil · 9 kmHigh 24.0°C · Low 18.0°C · 142 mm rain
- Ribeirão Pires in SeptemberBrazil · 33 kmHigh 23.2°C · Low 14.8°C · 129 mm rain
- São Bernardo do Campo in SeptemberBrazil · 38 kmHigh 23.0°C · Low 14.2°C · 129 mm rain
- Santo André in SeptemberBrazil · 40 kmHigh 23.0°C · Low 14.5°C · 129 mm rain
- Itanhaém in SeptemberBrazil · 44 kmHigh 23.8°C · Low 17.2°C · 141 mm rain
- São Caetano do Sul in SeptemberBrazil · 45 kmHigh 23.7°C · Low 14.4°C · 90 mm rain
- Ferraz de Vasconcelos in SeptemberBrazil · 52 kmHigh 24.1°C · Low 14.6°C · 89 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 Praia Grande) is explained once on the Praia Grande year overview and on the Sources, method and limits page.
São Vicente lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.