Average annual temperature is 21.4 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: 7.4 °C
Number of sunny days: 136 days
Number of rainy days: 229 days
Look at detailed online map of São Luís
* Weather data for São Luís 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) | 30.0 | 32.5 | 31.2 | 30.7 | 27.1 | 26.6 | 30.4 | 31.8 | 34.8 | 32.8 | 37.3 | 33.2 |
| Average daytime temperature (°C) | 27.6 | 29.7 | 29.3 | 26.6 | 24.4 | 23.6 | 24.0 | 26.2 | 28.3 | 28.9 | 30.7 | 29.7 |
| Average temperature (°C) | 22.3 | 23.5 | 23.3 | 21.4 | 18.6 | 17.0 | 17.7 | 19.4 | 21.8 | 23.3 | 24.4 | 24.0 |
| Average night temperature (°C) | 19.1 | 19.2 | 18.7 | 17.4 | 13.8 | 11.8 | 12.9 | 14.0 | 16.6 | 19.3 | 19.4 | 19.7 |
| Absolute minimum temperature (°C) | 17.6 | 17.5 | 15.8 | 14.1 | 9.7 | 8.7 | 7.4 | 8.7 | 13.5 | 16.2 | 13.9 | 17.9 |
| 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 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.2 | 12.8 | 12.2 | 11.6 | 11.2 | 10.9 | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.3 |
| 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) | 8.2 | 10.5 | 10.5 | 8.8 | 9.1 | 9.2 | 8.6 | 9.1 | 8.9 | 8.4 | 10.3 | 10.9 |
| Precipitation (mm) | 392 | 98 | 36 | 83 | 5 | 12 | 26 | 37 | 27 | 194 | 89 | 101 |
| Sunny days | 1 | 2 | 9 | 10 | 18 | 21 | 18 | 16 | 17 | 2 | 17 | 5 |
| Rainy days | 30 | 26 | 22 | 20 | 13 | 9 | 13 | 15 | 13 | 29 | 13 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in São Luís is at