São Sebastião Temperature by Month
The average annual maximum temperature in São Sebastião, São Paulo State, Brazil is 25°C (77°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how São Sebastião compares to cities worldwide.
São Sebastião Monthly Temperatures
São Sebastião enjoys a stable climate with temperatures staying pretty much the same throughout the year. Maximum daytime temperatures range from a comfortable 23°C (73°F) in July to a comfortable 28°C (82°F) in February. Nights are consistently cool, with lows between 24°C (75°F) and 18°C (64°F).
The chart below illustrates the average maximum day and minimum night temperatures in São Sebastião by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. February, the city's warmest month, sees 108 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: São Sebastião vs Brazil
The map below shows the annual temperature across Brazil. You can also select individual months if you want to compare a specific time of year.
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São Sebastião vs World: Temperature Compared
São Sebastião's average annual maximum temperature is 25°C (77°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in São Sebastião this rarely lasts long on the ground.
For more on São Sebastião's weather — including monthly rainfall, sunshine hours, and humidity — visit our São Sebastião climate page.
