Climate in Rio Branco, Brazil

Rio Branco, Brazil has a tropical climate. The annual average temperature is about 26.3°C and the city receives roughly 1501 mm of precipitation across 134 rainy days a year, with around 1300 hours of sunshine. The warmest month is Jan (highs near 31.3°C) and the coldest is Jul (lows near 21.4°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Rio Branco is classified as Tropical. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Rio Branco receives about 1501 mm of precipitation a year over roughly 134 rainy days. The wettest month is Apr and the driest is Aug.

Rio Branco sees an estimated 1300 hours of sunshine a year, concentrated in the warmer months around Jan.

By temperature and rainfall, the most comfortable months in Rio Branco are Jul, Aug, Jun. Conditions vary year to year — verify with a current forecast before booking.

Rio Branco has a climate comfort score of 65/100, a comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.