Average annual temperature is 22.8 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: 10.9 °C
Number of sunny days: 177 days
Number of rainy days: 188 days
Look at detailed online map of Piauí
* Weather data for Piauí 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) | 29.3 | 33.2 | 32.7 | 32.9 | 28.1 | 26.9 | 30.0 | 33.7 | 36.8 | 36.4 | 38.6 | 35.0 |
| Average daytime temperature (°C) | 27.5 | 30.5 | 30.6 | 28.1 | 25.6 | 24.7 | 25.0 | 27.6 | 30.1 | 31.1 | 33.0 | 31.9 |
| Average temperature (°C) | 22.6 | 24.2 | 24.3 | 22.8 | 20.3 | 19.2 | 19.2 | 21.0 | 23.2 | 24.6 | 26.2 | 25.6 |
| Average night temperature (°C) | 18.9 | 18.6 | 18.7 | 18.6 | 16.3 | 14.8 | 14.6 | 15.6 | 17.5 | 19.2 | 19.7 | 20.2 |
| Absolute minimum temperature (°C) | 16.3 | 16.9 | 15.9 | 16.7 | 12.4 | 12.1 | 11.3 | 10.9 | 14.6 | 16.6 | 15.4 | 18.4 |
| 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 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.0 | 12.6 | 12.2 | 11.7 | 11.3 | 11.1 | 11.2 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 |
| 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 | 13.0 |
| Sunshine mean duration (h) | 9.1 | 11.5 | 11.0 | 8.6 | 9.1 | 9.3 | 9.0 | 9.3 | 9.9 | 9.9 | 11.4 | 10.8 |
| Precipitation (mm) | 174 | 12 | 10 | 100 | 23 | 6 | 14 | 12 | 6 | 60 | 13 | 118 |
| Sunny days | 2 | 14 | 13 | 7 | 15 | 18 | 17 | 20 | 24 | 15 | 19 | 13 |
| Rainy days | 29 | 14 | 18 | 23 | 16 | 12 | 14 | 11 | 6 | 16 | 11 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Piauí is at