Climate Insights for São Marcos

The climate in São Marcos is temperate. The average annual temperature is 17°C and approximately 312mm of precipitation falls per year. November is the wettest month, receiving around 33mm of rainfall. São Marcos 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: February, March, January. The coldest months are August, December, September, when temperatures can drop to 13°C.

São Marcos has relatively stable temperatures year-round, staying within a 7°C range. February is the warmest month, though highs remain moderate at 20°C with a mean of 19°C. August is the coolest month, with minimum temperatures around 13°C and an average of 15°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 2°C shift in average temperatures.

São Marcos is a quite dry location, receiving approximately 312mm of precipitation annually, which averages out to around 26mm per month. The wettest month is January, averaging 33mm of rainfall. February and March also tend to see above-average precipitation. The driest month is May, with just 10mm. That's 22mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

São Marcos is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 5km/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 Marcos, which began on June 21, 2026. São Marcos 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 February at around 20°C, while the coldest stretch bottoms out in August near 13°C. Spring is next, beginning on September 23, 2026 (16 days from now).

The best time to visit São Marcos is during January, February, March, April, May, June, July, August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 27mm 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 Marcos 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.