Average annual temperature is 24.4 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 11.9 °C
Number of sunny days: 194 days
Number of rainy days: 171 days
Look at detailed online map of São Sebastião
* Weather data for São Sebastião 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) | 29.6 | 32.4 | 31.8 | 32.3 | 29.1 | 28.0 | 31.4 | 34.3 | 37.7 | 36.2 | 38.4 | 35.7 |
| Average daytime temperature (°C) | 27.5 | 30.1 | 30.0 | 28.3 | 27.3 | 25.9 | 27.4 | 30.0 | 32.9 | 33.5 | 33.7 | 32.4 |
| Average temperature (°C) | 23.1 | 25.2 | 25.0 | 23.4 | 21.7 | 20.2 | 21.6 | 23.6 | 26.7 | 27.5 | 27.8 | 26.8 |
| Average night temperature (°C) | 19.7 | 20.5 | 20.3 | 19.5 | 16.4 | 14.8 | 15.8 | 17.5 | 20.7 | 22.5 | 22.4 | 22.4 |
| Absolute minimum temperature (°C) | 18.7 | 18.8 | 17.9 | 17.3 | 12.9 | 12.0 | 11.9 | 13.8 | 17.3 | 20.0 | 18.3 | 20.2 |
| 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 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 | 11.2 | 11.5 | 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) | 8.3 | 11.1 | 10.0 | 9.2 | 10.2 | 10.0 | 10.3 | 10.2 | 11.0 | 10.8 | 11.5 | 10.6 |
| Precipitation (mm) | 402 | 62 | 31 | 100 | 0 | 21 | 1 | 56 | 41 | 71 | 40 | 221 |
| Sunny days | 0 | 11 | 12 | 4 | 28 | 27 | 28 | 23 | 23 | 13 | 17 | 8 |
| Rainy days | 31 | 17 | 19 | 26 | 3 | 3 | 3 | 8 | 7 | 18 | 13 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in São Sebastião is at