Climate Overview
The climate in Santo André is cold. The average annual temperature is -12°C and approximately 63mm of precipitation falls per year. August is the wettest month, receiving around 17mm of rainfall. Santo André 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: June, March, February. The coldest months are September, October, August, when temperatures can drop to -18°C. Snowfall occurs from January to December, with around 63cm accumulating over the season.
Temperature
Santo André has relatively stable temperatures year-round, staying within a 8°C range. June is the warmest month, though highs remain moderate at -10°C with a mean of -11°C. September brings the harshest conditions, with lows dropping to -18°C and an average temperature of -17°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between August and September, with a 4°C shift in average temperatures.
Precipitation
Santo André is a quite dry location, receiving approximately 63mm of precipitation annually, which averages out to around 5mm per month. The wettest month is August, averaging 17mm of rainfall. July and September also tend to see above-average precipitation. The driest month is February, with just 0mm. 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. Snowfall is a regular feature from January to December, with around 63cm accumulating over the season. August typically sees the most snow at around 17cm.
Wind
Santo André is relatively calm, with an average annual wind speed of 4km/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 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, 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 4km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
16 days until Spring
It is currently winter in Santo André, which began on June 21, 2026. Santo André 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 June at around -10°C, while the coldest stretch bottoms out in September near -18°C. Spring is next, beginning on September 23, 2026 — 16 days from now.
Spring
Temperatures range from -18 to -11°C. Precipitation is minimal, with only around 17mm for the entire season. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from -12 to -10°C. Precipitation is minimal, with only around 4mm for the entire season. Winds are generally light, averaging 5km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -12 to -10°C. Precipitation is minimal, with only around 3mm for the entire season. Winds are generally light, averaging 4km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -14 to -10°C. Precipitation is minimal, with only around 40mm for the entire season. Expect around 40cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Santo André 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.
