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Hourly Forecast
Daylight Hours
05:24
Sunrise
17:23
Sunset
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Waxing Gibbous
12:34
Moonrise
00:49
Moonset
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View stargazing scoreWeather in Rio Branco today, September 20, 2026
Expect unsettled, showery conditions in Rio Branco on September 20, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans.
Temperatures climb from an overnight low near 23°C toward a daytime high of about 35°C. The air stays humid, with relative humidity between 46% and 86% and the peak around 23:00. A lighter breeze peaks around 12:00 near 2.9 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 70% around 14:00. Cloud also stays substantial, close to 41% near 13:00. Expect visibility around 16.1 km. The sun rises at 05:24 and sets at 17:23, for a total of 11 hours 59 minutes of sunlight today.
The practical takeaway for Rio Branco on September 20, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 35°C.
Frequently asked questions about weather in Rio Branco
How warm does it get in Rio Branco?
The warmest month in Rio Branco is September, with average high temperatures of 34°C. The average temperature during this period is around 27°C.
How cold does it get in Rio Branco?
The coldest month in Rio Branco is July, with average low temperatures of 19°C. The average temperature during this period is around 25°C.
What is the wettest time of year in Rio Branco?
The wettest month in Rio Branco is February, with an average of 284mm of precipitation.
What is the driest time of year in Rio Branco?
The driest month in Rio Branco is July, with an average of 13mm of precipitation.
