Average annual temperature is 24.3 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: 6.9 °C
Number of sunny days: 155 days
Number of rainy days: 210 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) | 34.1 | 32.1 | 33.8 | 32.8 | 31.5 | 31.3 | 32.1 | 35.7 | 37.8 | 38.4 | 38.6 | 38.3 |
| Average daytime temperature (°C) | 30.2 | 29.6 | 30.7 | 28.9 | 27.8 | 25.3 | 27.9 | 30.2 | 32.0 | 33.2 | 33.7 | 33.7 |
| Average temperature (°C) | 25.4 | 24.7 | 25.3 | 23.3 | 21.7 | 18.7 | 21.1 | 23.5 | 25.6 | 27.3 | 27.3 | 27.9 |
| Average night temperature (°C) | 21.6 | 21.4 | 21.5 | 19.1 | 16.9 | 13.5 | 16.0 | 18.4 | 20.7 | 22.9 | 22.8 | 23.4 |
| Absolute minimum temperature (°C) | 18.2 | 18.3 | 20.0 | 13.5 | 11.4 | 6.9 | 8.9 | 14.9 | 11.5 | 16.4 | 13.8 | 19.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.3 | 12.8 | 12.2 | 11.6 | 11.1 | 10.8 | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 9.7 | 8.7 | 9.9 | 9.6 | 8.6 | 9.0 | 9.5 | 9.2 | 9.9 | 10.0 | 10.2 | 10.9 |
| Precipitation (mm) | 183 | 265 | 164 | 143 | 46 | 88 | 4 | 67 | 74 | 132 | 140 | 109 |
| Sunny days | 1 | 1 | 4 | 12 | 21 | 26 | 28 | 20 | 19 | 8 | 10 | 5 |
| Rainy days | 30 | 27 | 27 | 18 | 10 | 4 | 3 | 11 | 11 | 23 | 20 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rio Branco is at