Climate averages 1991–2020
Valença (Rio de Janeiro), Brazil weather
in May.
A warm, moderately wet month: the 10th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Valença (Rio de Janeiro), Brazil: daytime highs average 23.5°C and nights cool to about 15.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 54 mm of rain on roughly 9 days, which makes May a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 04 min on an average May day.
The nearest other city in this atlas is Barra do Piraí (28 km away). In May its highs average 24.5°C, 1.0°C warmer than Valença (Rio de Janeiro), Brazil, with 53 mm of rain.
Among the 448 cities listed in Brazil, Valença (Rio de Janeiro), Brazil ranks joint 306th of 448 for the warmest May highs and joint 142nd of 448 for the driest May (rainfall, lowest first). The mean May high of those 448 cities is 25.3°C; Valença (Rio de Janeiro), Brazil is 1.8°C cooler than that mean.
From May to June, average highs fall by 0.4°C to 23.2°C, and monthly rainfall falls from 54 mm to 26 mm.
The annual picture
May 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, selected | 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
May in nearby cities
- Barra do Piraí in MayBrazil · 28 kmHigh 24.5°C · Low 16.3°C · 53 mm rain
- Japeri in MayBrazil · 44 kmHigh 26.3°C · Low 18.1°C · 67 mm rain
- Volta Redonda in MayBrazil · 52 kmHigh 24.2°C · Low 15.6°C · 49 mm rain
- Três Rios in MayBrazil · 53 kmHigh 25.1°C · Low 16.7°C · 35 mm rain
- Queimados in MayBrazil · 54 kmHigh 25.8°C · Low 17.7°C · 58 mm rain
- Seropédica in MayBrazil · 55 kmHigh 25.7°C · Low 17.8°C · 67 mm rain
- Barra Mansa in MayBrazil · 59 kmHigh 24.1°C · Low 15.5°C · 47 mm rain
- Petrópolis in MayBrazil · 61 kmHigh 22.0°C · Low 14.8°C · 70 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.