Climate Insights for Jandaia do Sul

The climate in Jandaia do Sul is warm and mild. The average annual temperature is 22°C and approximately 1550mm of precipitation falls per year. Jandaia do Sul receives a notable amount of rainfall throughout the year, including during its driest month. Jandaia do Sul 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: March, February, January. The coldest months are July, June, August, when temperatures can drop to 13°C.

Jandaia do Sul sees moderate temperature variation throughout the year, ranging from 13°C to 29°C. The warmest month is March, when average highs reach 29°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 13°C and an average of 19°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 3°C shift in average temperatures.

Jandaia do Sul is a fairly wet location, receiving approximately 1550mm of precipitation annually, which averages out to around 129mm per month. The wettest month is January, averaging 218mm of rainfall. December and February also tend to see above-average precipitation. The driest month is July, with just 42mm. That's 176mm less than January, 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.

Jandaia do Sul is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently autumn in Jandaia do Sul, which began on March 20, 2026. Jandaia do Sul 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 March at around 29°C, while the coldest stretch bottoms out in July near 13°C. Winter is next, beginning on June 21, 2026 — 12 days from now.

The best time to visit Jandaia do Sul is during April, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 80mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 29°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Jandaia do Sul 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.