Climate averages 1991–2020
Barra do Piraí weather
in July.
A warm, fairly dry month: the coolest and the joint 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Barra do Piraí: daytime highs average 24.0°C and nights cool to about 14.4°C. By daytime temperature it is the coolest month of the year.
Expect about 28 mm of rain on roughly 5 days, which makes July a fairly dry month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 54 min on an average July day.
The nearest other city in this atlas is Japeri (26 km away). In July its highs average 25.7°C, 1.7°C warmer than Barra do Piraí, with 40 mm of rain.
Among the 448 cities listed in Brazil, Barra do Piraí ranks joint 263rd of 448 for the warmest July highs and joint 173rd of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Barra do Piraí is 0.7°C cooler than that mean.
From July to August, average highs rise by 1.2°C to 25.3°C, and monthly rainfall falls from 28 mm to 27 mm.
The annual picture
July 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, selected | 24.0°C14.4°C | 14.4°C | 28 | 5.4 | 10.911 h |
| August | 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
July in nearby cities
- Japeri in JulyBrazil · 26 kmHigh 25.7°C · Low 16.0°C · 40 mm rain
- Valença (Rio de Janeiro), Brazil in JulyBrazil · 28 kmHigh 22.9°C · Low 13.0°C · 26 mm rain
- Volta Redonda in JulyBrazil · 29 kmHigh 23.7°C · Low 13.4°C · 28 mm rain
- Seropédica in JulyBrazil · 33 kmHigh 25.1°C · Low 15.5°C · 40 mm rain
- Barra Mansa in JulyBrazil · 36 kmHigh 23.5°C · Low 13.3°C · 28 mm rain
- Queimados in JulyBrazil · 39 kmHigh 25.2°C · Low 15.7°C · 34 mm rain
- Itaguaí in JulyBrazil · 43 kmHigh 24.7°C · Low 16.7°C · 40 mm rain
- Nova Iguaçu in JulyBrazil · 50 kmHigh 25.3°C · Low 15.9°C · 34 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.