Climate Overview
The climate in São Sebastião do Passé is temperate. The average annual temperature is 11°C and approximately 204mm of precipitation falls per year. December is the wettest month, receiving around 33mm of rainfall. São Sebastião do Passé 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, June, August. The coldest months are November, January, December, when temperatures can drop to 5°C.
Temperature
São Sebastião do Passé sees moderate temperature variation throughout the year, ranging from 5°C to 19°C. September is the warmest month, though highs remain moderate at 19°C with a mean of 15°C. November is the coolest month, with minimum temperatures around 5°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between September and October, with a 3°C shift in average temperatures.
Precipitation
São Sebastião do Passé is a quite dry location, receiving approximately 204mm of precipitation annually, which averages out to around 17mm per month. The wettest month is March, averaging 33mm of rainfall. April and December also tend to see above-average precipitation. The driest month is September, with just 0mm. That's 33mm 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
São Sebastião do Passé is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, 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. Wind tends to pick up during the summer months. The seasonal averages are 3km/h in winter, 4km/h in spring, 7km/h in summer, 8km/h in autumn.
Seasons
16 days until Spring
It is currently winter in São Sebastião do Passé, which began on June 21, 2026. São Sebastião do Passé 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 19°C, while the coldest stretch bottoms out in November near 5°C. Spring is next, beginning on September 23, 2026 — 16 days from now.
Spring
Temperatures range from 5 to 19°C. Precipitation is minimal, with only around 30mm for the entire season. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 5 to 10°C. Rainfall is relatively light, with around 64mm over the season and a monthly average of 21mm. Winds are generally light, averaging 7km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 9 to 13°C. Rainfall is relatively light, with around 75mm over the season and a monthly average of 25mm. Winds are generally light, averaging 8km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 8 to 15°C. Precipitation is minimal, with only around 36mm for the entire season. Winds are generally light, averaging 3km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for São Sebastião do Passé 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.
