Climate averages 1991–2020
Valença (Rio de Janeiro), Brazil weather
in January.
A hot, very wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Valença (Rio de Janeiro), Brazil: daytime highs average 28.2°C and nights cool to about 20.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 302 mm of rain on roughly 22 days, which makes January a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 19 min on an average January day.
The nearest other city in this atlas is Barra do Piraí (28 km away). In January its highs average 29.4°C, 1.2°C warmer than Valença (Rio de Janeiro), Brazil, with 282 mm of rain.
Among the 448 cities listed in Brazil, Valença (Rio de Janeiro), Brazil ranks joint 256th of 448 for the warmest January highs and 419th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Valença (Rio de Janeiro), Brazil is 0.3°C cooler than that mean.
From January to February, average highs rise by 0.5°C to 28.7°C, and monthly rainfall falls from 302 mm to 221 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Barra do Piraí in JanuaryBrazil · 28 kmHigh 29.4°C · Low 21.2°C · 282 mm rain
- Japeri in JanuaryBrazil · 44 kmHigh 31.3°C · Low 23.1°C · 273 mm rain
- Volta Redonda in JanuaryBrazil · 52 kmHigh 28.8°C · Low 20.3°C · 279 mm rain
- Três Rios in JanuaryBrazil · 53 kmHigh 29.6°C · Low 21.5°C · 232 mm rain
- Queimados in JanuaryBrazil · 54 kmHigh 30.8°C · Low 22.6°C · 235 mm rain
- Seropédica in JanuaryBrazil · 55 kmHigh 30.6°C · Low 22.6°C · 273 mm rain
- Barra Mansa in JanuaryBrazil · 59 kmHigh 28.6°C · Low 20.2°C · 282 mm rain
- Petrópolis in JanuaryBrazil · 61 kmHigh 26.9°C · Low 19.6°C · 315 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.