Average annual temperature is 23.6 °C
Absolute maximum temperature: 39.3 °C
Absolute minimum temperature: 12.5 °C
Number of sunny days: 108 days
Number of rainy days: 257 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) | 33.8 | 34.7 | 35.7 | 30.7 | 30.6 | 30.9 | 30.7 | 36.4 | 37.3 | 33.4 | 39.3 | 37.1 |
| Average daytime temperature (°C) | 29.0 | 30.4 | 29.6 | 26.4 | 24.8 | 25.5 | 24.6 | 26.0 | 28.3 | 26.4 | 29.5 | 29.9 |
| Average temperature (°C) | 25.4 | 26.5 | 26.0 | 23.3 | 21.6 | 21.0 | 20.3 | 21.3 | 23.4 | 23.2 | 25.1 | 26.0 |
| Average night temperature (°C) | 22.8 | 24.0 | 23.2 | 20.7 | 18.9 | 17.7 | 16.7 | 18.3 | 20.0 | 21.0 | 21.8 | 22.9 |
| Absolute minimum temperature (°C) | 19.7 | 22.3 | 20.5 | 16.4 | 13.6 | 14.9 | 12.5 | 14.4 | 15.9 | 19.3 | 14.6 | 20.2 |
| 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) | 13.4 | 12.9 | 12.2 | 11.5 | 11.0 | 10.7 | 10.8 | 11.3 | 12.0 | 12.6 | 13.3 | 13.6 |
| 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) | 8.3 | 8.0 | 9.4 | 8.9 | 8.7 | 8.7 | 8.3 | 7.3 | 8.1 | 5.9 | 8.8 | 10.8 |
| Precipitation (mm) | 195 | 234 | 115 | 130 | 80 | 44 | 51 | 88 | 54 | 194 | 168 | 75 |
| Sunny days | 2 | 0 | 6 | 6 | 14 | 19 | 16 | 17 | 14 | 2 | 6 | 6 |
| Rainy days | 29 | 28 | 25 | 24 | 17 | 11 | 15 | 14 | 16 | 29 | 24 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit São Sebastião during the most sunny months:
The largest precipitation sum in São Sebastião is at