Climate averages 1991–2020
Barra do Piraí weather
in August.
A warm, fairly dry month: the 9th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Barra do Piraí: daytime highs average 25.3°C and nights cool to about 15.1°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 27 mm of rain on roughly 5 days, which makes August a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 21 min on an average August day.
The nearest other city in this atlas is Japeri (26 km away). In August its highs average 26.9°C, 1.6°C warmer than Barra do Piraí, with 35 mm of rain.
Among the 448 cities listed in Brazil, Barra do Piraí ranks joint 251st of 448 for the warmest August highs and joint 179th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Barra do Piraí is 0.9°C cooler than that mean.
From August to September, average highs rise by 1.1°C to 26.4°C, and monthly rainfall rises from 27 mm to 66 mm.
The annual picture
August 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 do Piraí climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.4°C21.2°C | 21.2°C | 282 | 22.0 | 13.313 h |
| February | 30.0°C21.3°C | 21.3°C | 202 | 17.7 | 12.913 h |
| March | 28.4°C20.6°C | 20.6°C | 195 | 20.5 | 12.212 h |
| April | 26.8°C19.0°C | 19.0°C | 89 | 12.3 | 11.612 h |
| May | 24.5°C16.3°C | 16.3°C | 53 | 9.1 | 11.111 h |
| June | 24.2°C14.9°C | 14.9°C | 28 | 5.4 | 10.811 h |
| July | 24.0°C14.4°C | 14.4°C | 28 | 5.4 | 10.911 h |
| August, selected | 25.3°C15.1°C | 15.1°C | 27 | 5.4 | 11.311 h |
| September | 26.4°C16.9°C | 16.9°C | 66 | 9.9 | 11.912 h |
| October | 27.3°C18.4°C | 18.4°C | 112 | 13.9 | 12.613 h |
| November | 27.0°C19.2°C | 19.2°C | 202 | 19.1 | 13.213 h |
| December | 28.5°C20.5°C | 20.5°C | 248 | 22.1 | 13.513 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
August in nearby cities
- Japeri in AugustBrazil · 26 kmHigh 26.9°C · Low 16.6°C · 35 mm rain
- Valença (Rio de Janeiro), Brazil in AugustBrazil · 28 kmHigh 24.1°C · Low 13.7°C · 30 mm rain
- Volta Redonda in AugustBrazil · 29 kmHigh 25.1°C · Low 14.1°C · 26 mm rain
- Seropédica in AugustBrazil · 33 kmHigh 26.2°C · Low 16.0°C · 35 mm rain
- Barra Mansa in AugustBrazil · 36 kmHigh 24.9°C · Low 14.0°C · 27 mm rain
- Queimados in AugustBrazil · 39 kmHigh 26.3°C · Low 16.2°C · 32 mm rain
- Itaguaí in AugustBrazil · 43 kmHigh 25.6°C · Low 17.1°C · 35 mm rain
- Nova Iguaçu in AugustBrazil · 50 kmHigh 26.4°C · Low 16.4°C · 32 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 do Piraí) is explained once on the Barra do Piraí year overview and on the Sources, method and limits page.