Climate Overview
The climate in Santo Antônio is hot. The average annual temperature is 26°C and approximately 657mm of precipitation falls per year. March is the wettest month, receiving around 121mm of rainfall. Santo Antônio sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Santo Antônio sees moderate temperature variation throughout the year, ranging from 21°C to 32°C. The warmest month is December, when average highs reach 32°C and the mean temperature sits around 27°C. August is the coolest month, with minimum temperatures around 21°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Santo Antônio is a relatively dry area, receiving approximately 657mm of precipitation annually, which averages out to around 55mm per month. The wettest month is March, averaging 121mm of rainfall. April and February also tend to see above-average precipitation. The driest month is September, with just 11mm. That's 110mm less than March, 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.
Wind
Santo Antônio 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 September, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
92 days until Spring
It is currently winter in Santo Antônio, which began on June 21, 2026. Santo Antônio 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 32°C, while the coldest stretch bottoms out in August near 21°C. Spring is next, beginning on September 23, 2026 — 92 days from now.
Spring
Temperatures range from 22 to 32°C. Precipitation is minimal, with only around 36mm for the entire season. Winds are generally light, averaging 5km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 24 to 32°C. Precipitation is moderate at around 184mm for the season, averaging 61mm per month. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 313mm across the season with a monthly average of 104mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 30°C. Rainfall is relatively light, with around 124mm over the season and a monthly average of 41mm. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Santo Antônio is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 55mm per month. By contrast, December can be uncomfortably hot with highs reaching 32°C, while August is the coldest period with lows dropping to 21°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Santo Antônio 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.
