Average annual temperature is 20.7 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: 5.9 °C
Number of sunny days: 150 days
Number of rainy days: 215 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) | 31.4 | 29.9 | 29.9 | 29.3 | 28.1 | 27.3 | 26.6 | 29.4 | 33.8 | 31.4 | 33.9 | 33.5 |
| Average daytime temperature (°C) | 27.5 | 26.3 | 27.7 | 25.1 | 24.5 | 22.0 | 22.3 | 24.1 | 27.6 | 27.0 | 27.5 | 29.9 |
| Average temperature (°C) | 22.7 | 21.9 | 22.7 | 20.0 | 18.7 | 16.6 | 16.9 | 18.4 | 21.7 | 22.1 | 22.6 | 24.5 |
| Average night temperature (°C) | 18.5 | 18.7 | 18.9 | 15.7 | 13.7 | 12.0 | 12.7 | 13.9 | 17.0 | 18.2 | 18.6 | 20.0 |
| Absolute minimum temperature (°C) | 14.6 | 16.7 | 17.5 | 10.2 | 8.7 | 5.9 | 6.3 | 7.8 | 8.1 | 13.9 | 10.4 | 16.9 |
| 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 | 10.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.4 | 12.9 | 12.2 | 11.5 | 10.9 | 10.7 | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 10.1 | 8.7 | 10.0 | 9.4 | 9.0 | 8.1 | 8.4 | 9.1 | 9.6 | 8.3 | 8.5 | 11.5 |
| Precipitation (mm) | 202 | 339 | 161 | 109 | 46 | 122 | 100 | 115 | 121 | 443 | 232 | 82 |
| Sunny days | 4 | 3 | 7 | 16 | 22 | 23 | 20 | 15 | 12 | 7 | 7 | 14 |
| Rainy days | 27 | 25 | 24 | 14 | 9 | 7 | 11 | 16 | 18 | 24 | 23 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rio Branco is at