Climate Insights for Rio Branco

The climate in Rio Branco is hot. The average annual temperature is 26°C and approximately 1,814 mm of precipitation falls per year. February is the wettest month, receiving around 284 mm of rainfall. Rio Branco sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Rio Branco is hot. The average annual temperature is 79°F and approximately 71.4 in of precipitation falls per year. February is the wettest month, receiving around 11.2 in of rainfall. Rio Branco sits near the equator, so seasonal temperature differences are minimal throughout the year.

Rio Branco sees moderate temperature variation throughout the year, ranging from 19°C to 34°C. The warmest month is September, when average highs reach 34°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 19°C and an average of 25°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Rio Branco sees moderate temperature variation throughout the year, ranging from 66°F to 94°F. The warmest month is September, when average highs reach 94°F and the mean temperature sits around 81°F. July is the coolest month, with minimum temperatures around 66°F and an average of 77°F. On average, daily temperatures fluctuate by about 17°F between overnight lows and afternoon highs.

Rio Branco is a fairly wet location, receiving approximately 1,814 mm of precipitation annually, which averages out to around 151 mm per month. The wettest month is February, averaging 284 mm of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 13 mm. That's 271 mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Rio Branco is a fairly wet location, receiving approximately 71.4 in of precipitation annually, which averages out to around 5.9 in per month. The wettest month is February, averaging 11.2 in of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 0.5 in. That's 10.7 in less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Rio Branco is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.Rio Branco is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is August, averaging 4mph, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 3mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.

The best time to visit Rio Branco is during June and July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 21 mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 34°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Rio Branco is during June and July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 76°F with modest rainfall averaging 0.8 in per month. By contrast, September can be uncomfortably hot with temperatures reaching 94°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Rio Branco based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Rio Branco based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.