Climate averages 1991–2020
Angra dos Reis weather
in September.
A warm, wet month: the 8th 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 Angra dos Reis: daytime highs average 25.4°C and nights cool to about 19.5°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 104 mm of rain on roughly 13 days, which makes September a wet month (the 5th 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 Barra Mansa (54 km away). In September its highs average 26.2°C, 0.8°C warmer than Angra dos Reis, with 69 mm of rain.
Among the 448 cities listed in Brazil, Angra dos Reis ranks joint 323rd of 448 for the warmest September highs and joint 347th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Angra dos Reis is 2.2°C cooler than that mean.
From September to October, average highs rise by 0.8°C to 26.2°C, and monthly rainfall rises from 104 mm to 136 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
Angra dos Reis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.0°C24.1°C | 24.1°C | 301 | 24.1 | 13.413 h |
| February | 29.5°C24.3°C | 24.3°C | 221 | 20.2 | 12.913 h |
| March | 28.4°C23.5°C | 23.5°C | 232 | 22.9 | 12.212 h |
| April | 27.1°C22.1°C | 22.1°C | 135 | 15.6 | 11.612 h |
| May | 25.1°C19.9°C | 19.9°C | 95 | 12.4 | 11.011 h |
| June | 24.7°C18.7°C | 18.7°C | 59 | 8.5 | 10.711 h |
| July | 24.2°C18.1°C | 18.1°C | 64 | 8.7 | 10.911 h |
| August | 24.8°C18.4°C | 18.4°C | 57 | 8.6 | 11.311 h |
| September, selected | 25.4°C19.5°C | 19.5°C | 104 | 13.2 | 11.912 h |
| October | 26.2°C20.7°C | 20.7°C | 136 | 16.7 | 12.613 h |
| November | 26.4°C21.5°C | 21.5°C | 203 | 20.2 | 13.213 h |
| December | 28.0°C23.0°C | 23.0°C | 244 | 22.7 | 13.514 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
- Barra Mansa in SeptemberBrazil · 54 kmHigh 26.2°C · Low 15.9°C · 69 mm rain
- Volta Redonda in SeptemberBrazil · 58 kmHigh 26.3°C · Low 15.9°C · 63 mm rain
- Itaguaí in SeptemberBrazil · 58 kmHigh 26.4°C · Low 18.6°C · 79 mm rain
- Resende in SeptemberBrazil · 61 kmHigh 25.2°C · Low 15.2°C · 115 mm rain
- Seropédica in SeptemberBrazil · 69 kmHigh 27.2°C · Low 17.8°C · 79 mm rain
- Barra do Piraí in SeptemberBrazil · 78 kmHigh 26.4°C · Low 16.9°C · 66 mm rain
- Japeri in SeptemberBrazil · 79 kmHigh 28.0°C · Low 18.5°C · 79 mm rain
- Cruzeiro in SeptemberBrazil · 82 kmHigh 26.5°C · Low 15.5°C · 79 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 Angra dos Reis) is explained once on the Angra dos Reis year overview and on the Sources, method and limits page.