Climate Insights for São Francisco

The climate in São Francisco is temperate. The average annual temperature is 17°C and approximately 181mm of precipitation falls per year. December is the wettest month, receiving around 33mm of rainfall. São Francisco is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: September, December, November. The coldest months are October, March, April, when temperatures can drop to 9°C.

São Francisco sees moderate temperature variation throughout the year, ranging from 9°C to 29°C. The warmest month is September, when average highs reach 29°C and the mean temperature sits around 23°C. October is the coolest month, with minimum temperatures around 9°C and an average of 17°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

São Francisco is a quite dry location, receiving approximately 181mm of precipitation annually, which averages out to around 15mm per month. The wettest month is May, averaging 33mm of rainfall. December and November also tend to see above-average precipitation. The driest month is February, with just 1mm. That's 32mm less than May, 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 Francisco 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 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 7km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently winter in São Francisco, which began on June 21, 2026. São Francisco is in the Southern Hemisphere, where the seasons are reversed: spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in September at around 29°C, while the coldest stretch bottoms out in October near 9°C. Spring is next, beginning on September 23, 2026 (16 days from now).

The best time to visit São Francisco is during January, May, June, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 19mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for São Francisco 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.