Climate averages 1991–2020
Barra da Tijuca weather
in September.
A warm, moderately wet month: the 8th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Barra da Tijuca: daytime highs average 27.5°C and nights cool to about 19.0°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 75 mm of rain on roughly 11 days, which makes September a moderately wet month (the 4th 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 Rio de Janeiro (21 km away). In September its highs average 26.8°C, 0.6°C cooler than Barra da Tijuca, with 75 mm of rain.
Among the 448 cities listed in Brazil, Barra da Tijuca ranks joint 212th of 448 for the warmest September highs and joint 264th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Barra da Tijuca is 0.1°C cooler than that mean.
From September to October, average highs rise by 1.1°C to 28.5°C, and monthly rainfall rises from 75 mm to 92 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
Barra da Tijuca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.2°C23.9°C | 23.9°C | 170 | 16.4 | 13.413 h |
| February | 31.7°C24.0°C | 24.0°C | 118 | 13.3 | 12.913 h |
| March | 30.1°C23.3°C | 23.3°C | 145 | 16.7 | 12.212 h |
| April | 28.5°C21.7°C | 21.7°C | 88 | 12.0 | 11.612 h |
| May | 26.2°C19.1°C | 19.1°C | 76 | 11.1 | 11.011 h |
| June | 25.8°C17.7°C | 17.7°C | 48 | 7.3 | 10.711 h |
| July | 25.5°C17.0°C | 17.0°C | 51 | 7.9 | 10.911 h |
| August | 26.5°C17.5°C | 17.5°C | 41 | 7.5 | 11.311 h |
| September, selected | 27.5°C19.0°C | 19.0°C | 75 | 10.5 | 11.912 h |
| October | 28.5°C20.5°C | 20.5°C | 92 | 11.7 | 12.613 h |
| November | 28.6°C21.5°C | 21.5°C | 139 | 15.8 | 13.213 h |
| December | 30.2°C23.0°C | 23.0°C | 151 | 16.2 | 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
- Rio de Janeiro in SeptemberBrazil · 21 kmHigh 26.8°C · Low 18.6°C · 75 mm rain
- Duque de Caxias in SeptemberBrazil · 24 kmHigh 27.1°C · Low 18.2°C · 86 mm rain
- Belford Roxo in SeptemberBrazil · 26 kmHigh 27.3°C · Low 18.3°C · 66 mm rain
- Nova Iguaçu in SeptemberBrazil · 28 kmHigh 27.4°C · Low 18.1°C · 66 mm rain
- Queimados in SeptemberBrazil · 37 kmHigh 27.2°C · Low 17.8°C · 66 mm rain
- São Gonçalo in SeptemberBrazil · 37 kmHigh 26.3°C · Low 18.1°C · 85 mm rain
- Itaguaí in SeptemberBrazil · 45 kmHigh 26.4°C · Low 18.6°C · 79 mm rain
- Seropédica in SeptemberBrazil · 45 kmHigh 27.2°C · Low 17.8°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 Barra da Tijuca) is explained once on the Barra da Tijuca year overview and on the Sources, method and limits page.
Rio de Janeiro lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.