Climate averages 1991–2020
Rio Branco weather
in April.
A hot, wet month: the joint 10th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Rio Branco: daytime highs average 28.9°C and nights cool to about 22.4°C. By daytime temperature it is the joint 10th warmest of the 12 months.
Expect about 160 mm of rain on roughly 23 days, which makes April a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average April day.
The nearest other city in this atlas is Riberalta (224 km away). In April its highs average 29.1°C, about as warm as Rio Branco, with 174 mm of rain.
Among the 448 cities listed in Brazil, Rio Branco ranks joint 95th of 448 for the warmest April highs and 381st of 448 for the driest April (rainfall, lowest first). The mean April high of those 448 cities is 27.0°C; Rio Branco is 2.0°C warmer than that mean.
From April to May, average highs fall by 0.5°C to 28.4°C, and monthly rainfall falls from 160 mm to 76 mm.
The annual picture
April 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
Rio Branco climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.4°C22.9°C | 22.9°C | 255 | 27.6 | 12.613 h |
| February | 29.2°C22.8°C | 22.8°C | 243 | 25.3 | 12.412 h |
| March | 29.2°C22.8°C | 22.8°C | 249 | 27.2 | 12.212 h |
| April, selected | 28.9°C22.4°C | 22.4°C | 160 | 22.7 | 11.912 h |
| May | 28.4°C21.6°C | 21.6°C | 76 | 15.4 | 11.712 h |
| June | 28.9°C20.9°C | 20.9°C | 30 | 6.8 | 11.612 h |
| July | 30.4°C20.4°C | 20.4°C | 21 | 4.2 | 11.612 h |
| August | 32.1°C21.4°C | 21.4°C | 38 | 6.3 | 11.812 h |
| September | 32.4°C22.7°C | 22.7°C | 76 | 11.9 | 12.012 h |
| October | 31.5°C23.0°C | 23.0°C | 137 | 19.5 | 12.312 h |
| November | 30.1°C22.9°C | 22.9°C | 199 | 22.9 | 12.613 h |
| December | 29.5°C23.0°C | 23.0°C | 246 | 26.3 | 12.713 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
April in nearby cities
- Riberalta in AprilBolivia · 224 kmHigh 29.1°C · Low 22.9°C · 174 mm rain
- Puerto Maldonado in AprilPeru · 328 kmHigh 28.9°C · Low 22.3°C · 168 mm rain
- Porto Velho in AprilBrazil · 449 kmHigh 29.2°C · Low 23.3°C · 228 mm rain
- Ariquemes in AprilBrazil · 522 kmHigh 29.4°C · Low 22.7°C · 185 mm rain
- Cruzeiro do Sul in AprilBrazil · 595 kmHigh 29.0°C · Low 22.5°C · 221 mm rain
- Cusco in AprilPeru · 601 kmHigh 15.3°C · Low 7.4°C · 76 mm rain
- Trinidad in AprilBolivia · 626 kmHigh 29.0°C · Low 22.6°C · 142 mm rain
- Ji Paraná in AprilBrazil · 649 kmHigh 29.2°C · Low 22.6°C · 148 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 Rio Branco) is explained once on the Rio Branco year overview and on the Sources, method and limits page.