Climate averages 1991–2020
Rio Branco weather
in March.
A hot, very wet month: the joint 8th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a hot month in Rio Branco: daytime highs average 29.2°C and nights cool to about 22.8°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 249 mm of rain on roughly 27 days, which makes March a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average March day.
The nearest other city in this atlas is Riberalta (224 km away). In March its highs average 29.4°C, about as warm as Rio Branco, with 255 mm of rain.
Among the 448 cities listed in Brazil, Rio Branco ranks joint 111th of 448 for the warmest March highs and 391st of 448 for the driest March (rainfall, lowest first). The mean March high of those 448 cities is 27.9°C; Rio Branco is 1.2°C warmer than that mean.
From March to April, average highs fall by 0.2°C to 28.9°C, and monthly rainfall falls from 249 mm to 160 mm.
The annual picture
March 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, selected | 29.2°C22.8°C | 22.8°C | 249 | 27.2 | 12.212 h |
| April | 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
March in nearby cities
- Riberalta in MarchBolivia · 224 kmHigh 29.4°C · Low 23.3°C · 255 mm rain
- Puerto Maldonado in MarchPeru · 328 kmHigh 29.2°C · Low 22.8°C · 300 mm rain
- Porto Velho in MarchBrazil · 449 kmHigh 29.3°C · Low 23.4°C · 328 mm rain
- Ariquemes in MarchBrazil · 522 kmHigh 29.4°C · Low 22.8°C · 274 mm rain
- Cruzeiro do Sul in MarchBrazil · 595 kmHigh 29.4°C · Low 22.7°C · 282 mm rain
- Cusco in MarchPeru · 601 kmHigh 15.4°C · Low 8.1°C · 169 mm rain
- Trinidad in MarchBolivia · 626 kmHigh 29.3°C · Low 23.3°C · 234 mm rain
- Ji Paraná in MarchBrazil · 649 kmHigh 29.2°C · Low 22.8°C · 241 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.