Average annual temperature is 26.7 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 16.3 °C
Number of sunny days: 75 days
Number of rainy days: 290 days
Look at detailed online map of São Luís de Cassianã
* Weather data for São Luís de Cassianã 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) | 32.2 | 32.9 | 32.5 | 32.9 | 32.2 | 32.8 | 35.3 | 37.2 | 37.8 | 38.3 | 37.3 | 34.3 |
| Average daytime temperature (°C) | 29.7 | 30.0 | 29.8 | 30.3 | 30.4 | 30.2 | 33.6 | 34.1 | 35.3 | 36.2 | 34.4 | 32.6 |
| Average temperature (°C) | 24.9 | 25.4 | 25.2 | 25.7 | 26.0 | 25.3 | 27.2 | 27.8 | 28.8 | 29.2 | 28.1 | 26.9 |
| Average night temperature (°C) | 22.4 | 22.8 | 22.9 | 23.0 | 23.5 | 22.0 | 22.2 | 23.4 | 24.0 | 24.5 | 24.3 | 23.9 |
| Absolute minimum temperature (°C) | 21.5 | 21.2 | 21.6 | 22.2 | 22.9 | 16.3 | 20.9 | 20.7 | 22.5 | 23.2 | 22.9 | 22.3 |
| 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) | 7.3 | 8.1 | 7.6 | 8.5 | 9.5 | 9.8 | 10.9 | 10.2 | 10.4 | 10.7 | 9.9 | 9.7 |
| Precipitation (mm) | 363 | 200 | 326 | 249 | 210 | 101 | 11 | 39 | 34 | 24 | 107 | 197 |
| Sunny days | 0 | 0 | 0 | 0 | 1 | 5 | 23 | 15 | 17 | 13 | 0 | 1 |
| Rainy days | 31 | 28 | 31 | 30 | 30 | 25 | 8 | 16 | 13 | 18 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in São Luís de Cassianã is at