Climate Insights for Santa Catarina

The climate in Santa Catarina is warm and mild. The average annual temperature is 18°C and approximately 823mm of precipitation falls per year. September is the wettest month, receiving around 149mm of rainfall. Santa Catarina is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, June. The coldest months are January, December, February, when temperatures can drop to 8°C.

Temperatures in Santa Catarina vary considerably across the year, with a 21°C difference between the coldest and warmest months. The warmest month is May, when average highs reach 29°C and the mean temperature sits around 22°C. January is the coolest month, with minimum temperatures around 8°C and an average of 13°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 2°C shift in average temperatures.

Santa Catarina is a moderately rainy area, receiving approximately 823mm of precipitation annually, which averages out to around 69mm per month. The wettest month is September, averaging 149mm of rainfall. June and July also tend to see above-average precipitation. The driest month is January, with just 13mm. That's 137mm less than September, 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.

Santa Catarina is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 11km/h in winter, 13km/h in spring, 14km/h in summer, 11km/h in autumn.

It is currently spring in Santa Catarina, which began on March 20, 2026. Santa Catarina is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in May at around 29°C, while the coldest stretch bottoms out in January near 8°C. Summer is next, beginning on June 21, 2026 — 82 days from now.

The best time to visit Santa Catarina is during February, March, April, May, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 47mm per month. By contrast, January can be quite cold with temperatures dropping to 8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Santa Catarina 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.