Climate Insights for São Bernardo

The climate in São Bernardo is hot. The average annual temperature is 28°C and approximately 227mm of precipitation falls per year. October is the wettest month, receiving around 33mm of rainfall. São Bernardo sits near the equator, so seasonal temperature differences are minimal throughout the year.

São Bernardo sees moderate temperature variation throughout the year, ranging from 23°C to 41°C. December is the hottest month, with daytime highs reaching 41°C and an average of 35°C. August is the coolest month, with minimum temperatures around 23°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between August and September, with a 10°C shift in average temperatures.

São Bernardo is a quite dry location, receiving approximately 227mm of precipitation annually, which averages out to around 19mm per month. The wettest month is January, averaging 33mm of rainfall. February and April also tend to see above-average precipitation. The driest month is December, with just 1mm. That's 32mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

São Bernardo is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 6km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to pick up during the summer months. The seasonal averages are 5km/h in winter, 4km/h in spring, 7km/h in summer, 6km/h in autumn.

It is currently winter in São Bernardo, which began on June 21, 2026. São Bernardo sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in December at around 41°C, while the coldest stretch bottoms out in August near 23°C. Spring is next, beginning on September 23, 2026 (16 days from now).

The best time to visit São Bernardo is during May, June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 11mm per month. By contrast, December can be uncomfortably hot with temperatures reaching 41°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for São Bernardo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.