Climate averages 1991–2020
Valença (Rio de Janeiro), Brazil 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 Valença (Rio de Janeiro), Brazil: daytime highs average 26.3°C and nights cool to about 17.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 137 mm of rain on roughly 16 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 35 min on an average October day.
The nearest other city in this atlas is Barra do Piraí (28 km away). In October its highs average 27.3°C, 1.1°C warmer than Valença (Rio de Janeiro), Brazil, with 112 mm of rain.
Among the 448 cities listed in Brazil, Valença (Rio de Janeiro), Brazil ranks joint 321st of 448 for the warmest October highs and joint 336th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; Valença (Rio de Janeiro), Brazil is 2.0°C cooler than that mean.
From October to November, average highs fall by 0.3°C to 26.0°C, and monthly rainfall rises from 137 mm to 244 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
Valença (Rio de Janeiro), Brazil climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.2°C20.0°C | 20.0°C | 302 | 22.3 | 13.313 h |
| February | 28.7°C20.0°C | 20.0°C | 221 | 17.9 | 12.813 h |
| March | 27.3°C19.4°C | 19.4°C | 220 | 20.9 | 12.212 h |
| April | 25.8°C17.8°C | 17.8°C | 95 | 13.1 | 11.612 h |
| May | 23.5°C15.1°C | 15.1°C | 54 | 9.1 | 11.111 h |
| June | 23.2°C13.5°C | 13.5°C | 26 | 5.3 | 10.811 h |
| July | 22.9°C13.0°C | 13.0°C | 26 | 5.3 | 10.911 h |
| August | 24.1°C13.7°C | 13.7°C | 30 | 6.3 | 11.411 h |
| September | 25.4°C15.6°C | 15.6°C | 76 | 10.8 | 11.912 h |
| October, selected | 26.3°C17.2°C | 17.2°C | 137 | 15.6 | 12.613 h |
| November | 26.0°C18.1°C | 18.1°C | 244 | 20.2 | 13.213 h |
| December | 27.4°C19.3°C | 19.3°C | 297 | 23.1 | 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
- Barra do Piraí in OctoberBrazil · 28 kmHigh 27.3°C · Low 18.4°C · 112 mm rain
- Japeri in OctoberBrazil · 44 kmHigh 29.0°C · Low 20.1°C · 114 mm rain
- Volta Redonda in OctoberBrazil · 52 kmHigh 27.2°C · Low 17.7°C · 110 mm rain
- Três Rios in OctoberBrazil · 53 kmHigh 27.8°C · Low 18.8°C · 107 mm rain
- Queimados in OctoberBrazil · 54 kmHigh 28.3°C · Low 19.5°C · 96 mm rain
- Seropédica in OctoberBrazil · 55 kmHigh 28.2°C · Low 19.4°C · 114 mm rain
- Barra Mansa in OctoberBrazil · 59 kmHigh 27.0°C · Low 17.6°C · 117 mm rain
- Petrópolis in OctoberBrazil · 61 kmHigh 24.8°C · Low 16.7°C · 137 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 Valença) is explained once on the Valença (Rio de Janeiro), Brazil year overview and on the Sources, method and limits page.