Rio Branco Weather & Climate: Best Time to Visit
Rio Branco, Acre, Brazil, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 32°C (90°F), peaking in September at 35°C (95°F) and dipping in July to 31°C (88°F).
The city has a wet climate, receiving around 1857 mm (73 in) of rainfall per year. Despite the high annual total, it has distinct dry (June to July) and wet (November to April) seasons. February is the wettest month. Sunshine peaks in July, when the city sees around 7.4 hours of sunshine per day.
Monthly Temperature in Rio Branco
With minimal seasonal shifts, Rio Branco experiences a constant climate year-round. On average, daytime temperatures range from a very warm 35°C (95°F) in September to a very warm 31°C (88°F) in July.
Nighttime temperatures range from 23°C (73°F) in September to 20°C (68°F) in July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rio Branco
Rio Branco has a notably wet climate with abundant precipitation, recording 1857 mm (73 in) of rainfall per year. The seasons in Rio Branco bring significant changes in precipitation. The wettest month, February, receives heavy rainfall, with an average of 275 mm (11 in) of precipitation. This rainfall is distributed across 25 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 26 mm (1 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Rio Branco Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Rio Branco
In Rio Branco, summer days are longer and more sunny, with daily sunshine hours peaking at 7.4 hours in July. As the darker season arrives, the brightness of the sun becomes less. February sees a soft sun for only 3.0 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Rio Branco by Month
The city experiences its highest humidity in January, reaching 87%. In August, the humidity drops to its lowest level at 77%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Rio Branco 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Rio Branco
With its warm weather, Rio Branco experiences temperatures from 31°C (88°F) to 35°C (95°F) throughout the year. May, June, July, August and September offers the driest weather, which makes it a good time to visit.It's smart to plan your activities during the cooler morning hours or take advantage of the refreshing evenings.
Note that January, February, March, April, November and December make up the rainy season, with heavier precipitation expected. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
