Average annual temperature is 24.0 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: 6.4 °C
Number of sunny days: 173 days
Number of rainy days: 192 days
Look at detailed online map of Arco Íris
* Weather data for Arco Íris 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) | 31.9 | 30.9 | 32.6 | 31.8 | 29.7 | 30.1 | 31.7 | 36.7 | 40.2 | 38.7 | 39.1 | 38.5 |
| Average daytime temperature (°C) | 28.9 | 28.9 | 29.6 | 27.5 | 26.7 | 24.8 | 28.3 | 31.1 | 34.8 | 33.6 | 33.4 | 34.8 |
| Average temperature (°C) | 24.2 | 24.0 | 24.4 | 22.3 | 20.3 | 18.1 | 21.0 | 23.7 | 27.0 | 26.9 | 27.1 | 28.5 |
| Average night temperature (°C) | 20.5 | 20.7 | 20.6 | 18.3 | 15.0 | 12.9 | 14.7 | 17.4 | 20.6 | 22.0 | 21.9 | 22.8 |
| Absolute minimum temperature (°C) | 18.1 | 19.5 | 18.2 | 13.3 | 10.6 | 6.4 | 8.7 | 13.4 | 11.2 | 18.1 | 14.8 | 20.6 |
| 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 | 10.9 | 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) | 9.0 | 8.1 | 9.2 | 9.1 | 9.4 | 9.0 | 9.9 | 9.4 | 10.1 | 9.7 | 10.6 | 11.7 |
| Precipitation (mm) | 233 | 266 | 149 | 122 | 23 | 84 | 1 | 15 | 29 | 221 | 97 | 68 |
| Sunny days | 1 | 0 | 5 | 13 | 27 | 25 | 29 | 23 | 19 | 9 | 11 | 11 |
| Rainy days | 30 | 28 | 26 | 17 | 4 | 5 | 2 | 8 | 11 | 22 | 19 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Arco Íris is at