Average annual temperature is 23.2 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: 15.0 °C
Number of sunny days: 32 days
Number of rainy days: 333 days
Look at detailed online map of Rio Branco
* Weather data for Rio Branco Brazil is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.1 | 31.2 | 29.6 | 31.7 | 27.9 | 26.8 | 30.1 | 30.6 | 31.6 | 33.2 | 33.4 | 33.3 |
| Average daytime temperature (°C) | 27.9 | 29.2 | 28.3 | 28.0 | 26.1 | 25.0 | 24.9 | 26.3 | 27.2 | 28.9 | 29.6 | 30.7 |
| Average temperature (°C) | 24.1 | 24.7 | 24.0 | 23.9 | 22.3 | 21.2 | 20.7 | 21.8 | 22.6 | 23.9 | 24.6 | 25.3 |
| Average night temperature (°C) | 21.3 | 21.3 | 20.9 | 21.2 | 19.8 | 18.2 | 17.6 | 18.6 | 19.5 | 20.5 | 21.0 | 21.6 |
| Absolute minimum temperature (°C) | 19.6 | 20.3 | 19.2 | 19.4 | 16.7 | 16.1 | 15.0 | 15.2 | 16.4 | 18.2 | 17.8 | 19.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 13.0 |
| Daylight mean duration (h) | 12.9 | 12.6 | 12.2 | 11.8 | 11.4 | 11.2 | 11.3 | 11.6 | 12.0 | 12.4 | 12.8 | 13.0 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 10.3 | 10.8 | 10.6 | 9.1 | 8.9 | 9.3 | 8.7 | 9.5 | 9.6 | 9.9 | 10.4 | 11.0 |
| Precipitation (mm) | 111 | 53 | 75 | 162 | 68 | 39 | 92 | 71 | 78 | 70 | 91 | 100 |
| Sunny days | 0 | 0 | 0 | 1 | 1 | 4 | 3 | 6 | 2 | 5 | 4 | 6 |
| Rainy days | 31 | 28 | 31 | 29 | 30 | 26 | 28 | 25 | 28 | 26 | 26 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rio Branco is at