Average annual temperature is 25.6 °C
Absolute maximum temperature: 39.6 °C
Absolute minimum temperature: 6.7 °C
Number of sunny days: 157 days
Number of rainy days: 208 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) | 34.8 | 33.5 | 34.7 | 35.0 | 32.3 | 31.6 | 32.5 | 35.8 | 38.3 | 39.0 | 39.6 | 38.6 |
| Average daytime temperature (°C) | 31.3 | 30.2 | 31.5 | 30.0 | 28.8 | 26.6 | 29.5 | 31.8 | 33.3 | 35.2 | 35.2 | 34.9 |
| Average temperature (°C) | 26.3 | 25.4 | 25.9 | 24.5 | 23.0 | 19.8 | 22.5 | 25.1 | 27.0 | 29.1 | 29.1 | 29.3 |
| Average night temperature (°C) | 22.6 | 22.3 | 22.3 | 20.5 | 18.7 | 14.8 | 17.3 | 20.1 | 22.1 | 24.5 | 24.2 | 24.8 |
| Absolute minimum temperature (°C) | 20.0 | 18.1 | 21.4 | 14.4 | 13.9 | 6.7 | 9.9 | 16.9 | 14.5 | 18.3 | 15.0 | 21.9 |
| 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) | 13.2 | 12.8 | 12.2 | 11.6 | 11.1 | 10.9 | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 |
| 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) | 9.8 | 9.0 | 10.1 | 9.7 | 8.9 | 9.1 | 9.6 | 9.4 | 9.9 | 10.2 | 11.1 | 11.2 |
| Precipitation (mm) | 262 | 190 | 178 | 120 | 56 | 81 | 22 | 52 | 76 | 73 | 112 | 59 |
| Sunny days | 1 | 1 | 5 | 12 | 16 | 25 | 27 | 21 | 17 | 11 | 14 | 7 |
| Rainy days | 30 | 27 | 26 | 18 | 15 | 5 | 4 | 10 | 13 | 20 | 16 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in São Sebastião is at