Average annual temperature is 21.6 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 10.0 °C
Number of sunny days: 115 days
Number of rainy days: 250 days
Look at detailed online map of Piraí
* Weather data for Piraí 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) | 32.6 | 33.0 | 32.3 | 29.1 | 27.3 | 26.7 | 29.8 | 33.8 | 36.2 | 34.8 | 38.3 | 34.6 |
| Average daytime temperature (°C) | 28.0 | 29.8 | 29.0 | 25.3 | 23.6 | 23.7 | 23.5 | 25.3 | 29.2 | 27.5 | 29.8 | 29.3 |
| Average temperature (°C) | 23.0 | 24.2 | 23.6 | 20.9 | 19.1 | 18.1 | 18.1 | 19.7 | 22.5 | 22.3 | 24.0 | 23.9 |
| Average night temperature (°C) | 20.0 | 20.9 | 20.3 | 17.8 | 15.9 | 14.1 | 14.3 | 15.8 | 17.9 | 19.3 | 20.0 | 20.4 |
| Absolute minimum temperature (°C) | 16.8 | 18.8 | 18.6 | 14.5 | 11.4 | 11.4 | 10.0 | 12.9 | 14.3 | 16.3 | 15.1 | 17.1 |
| 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 | 11.0 | 10.8 | 10.9 | 11.4 | 12.0 | 12.6 | 13.2 | 13.5 |
| 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) | 8.6 | 9.9 | 9.8 | 8.5 | 8.7 | 9.2 | 8.8 | 7.8 | 9.5 | 6.6 | 9.7 | 10.6 |
| Precipitation (mm) | 346 | 235 | 134 | 130 | 61 | 21 | 29 | 53 | 26 | 109 | 186 | 185 |
| Sunny days | 0 | 0 | 3 | 8 | 15 | 20 | 20 | 15 | 20 | 4 | 5 | 5 |
| Rainy days | 31 | 28 | 28 | 22 | 16 | 10 | 11 | 16 | 10 | 27 | 25 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Piraí is at