Climate averages 1991–2020
Barra do Piraí weather
in October.
A warm, wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Barra do Piraí: daytime highs average 27.3°C and nights cool to about 18.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 112 mm of rain on roughly 14 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 36 min on an average October day.
The nearest other city in this atlas is Japeri (26 km away). In October its highs average 29.0°C, 1.6°C warmer than Barra do Piraí, with 114 mm of rain.
Among the 448 cities listed in Brazil, Barra do Piraí ranks joint 274th of 448 for the warmest October highs and joint 228th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; Barra do Piraí is 0.9°C cooler than that mean.
From October to November, average highs fall by 0.3°C to 27.0°C, and monthly rainfall rises from 112 mm to 202 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Japeri in OctoberBrazil · 26 kmHigh 29.0°C · Low 20.1°C · 114 mm rain
- Valença (Rio de Janeiro), Brazil in OctoberBrazil · 28 kmHigh 26.3°C · Low 17.2°C · 137 mm rain
- Volta Redonda in OctoberBrazil · 29 kmHigh 27.2°C · Low 17.7°C · 110 mm rain
- Seropédica in OctoberBrazil · 33 kmHigh 28.2°C · Low 19.4°C · 114 mm rain
- Barra Mansa in OctoberBrazil · 36 kmHigh 27.0°C · Low 17.6°C · 117 mm rain
- Queimados in OctoberBrazil · 39 kmHigh 28.3°C · Low 19.5°C · 96 mm rain
- Itaguaí in OctoberBrazil · 43 kmHigh 27.5°C · Low 20.1°C · 114 mm rain
- Nova Iguaçu in OctoberBrazil · 50 kmHigh 28.5°C · Low 19.8°C · 96 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.