Average annual temperature is 28.3 °C
Absolute maximum temperature: 40.3 °C
Absolute minimum temperature: 20.1 °C
Number of sunny days: 204 days
Number of rainy days: 161 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) | 33.4 | 33.2 | 33.5 | 32.7 | 33.2 | 33.8 | 36.1 | 38.1 | 39.6 | 40.3 | 38.6 | 37.8 |
| Average daytime temperature (°C) | 30.9 | 31.0 | 30.5 | 30.9 | 31.6 | 32.7 | 34.0 | 35.6 | 37.3 | 38.6 | 36.1 | 34.8 |
| Average temperature (°C) | 26.1 | 26.3 | 26.0 | 26.2 | 26.8 | 27.1 | 28.1 | 29.7 | 31.1 | 32.6 | 30.3 | 29.6 |
| Average night temperature (°C) | 22.2 | 22.3 | 22.5 | 22.3 | 23.0 | 22.7 | 23.1 | 24.1 | 25.3 | 26.9 | 25.5 | 25.3 |
| Absolute minimum temperature (°C) | 20.6 | 21.1 | 20.6 | 20.1 | 21.8 | 21.1 | 21.5 | 22.5 | 23.6 | 25.4 | 23.2 | 23.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.5 | 12.3 | 12.1 | 11.9 | 11.8 | 11.7 | 11.7 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 10.6 | 10.3 | 9.1 | 10.1 | 10.1 | 10.3 | 10.8 | 11.2 | 11.3 | 11.2 | 10.8 | 10.1 |
| Precipitation (mm) | 64 | 112 | 175 | 57 | 14 | 0 | 0 | 0 | 0 | 0 | 24 | 23 |
| Sunny days | 3 | 6 | 1 | 8 | 16 | 28 | 29 | 30 | 29 | 26 | 15 | 13 |
| Rainy days | 28 | 22 | 30 | 22 | 15 | 2 | 2 | 1 | 1 | 5 | 15 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Piauí is at