Climate Overview
The climate in Piraí do Sul is warm and mild. The average annual temperature is 18°C and approximately 1766mm of precipitation falls per year. February is the wettest month, receiving around 340mm of rainfall. Piraí 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: April, February, January. The coldest months are June, July, August, when temperatures can drop to 9°C.
Temperature
Piraí do Sul sees moderate temperature variation throughout the year, ranging from 9°C to 27°C. The warmest month is April, when average highs reach 27°C and the mean temperature sits around 21°C. June is the coolest month, with minimum temperatures around 9°C and an average of 13°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 6°C shift in average temperatures.
Precipitation
Piraí do Sul is a fairly wet location, receiving approximately 1766mm of precipitation annually, which averages out to around 147mm per month. The wettest month is February, averaging 340mm of rainfall. January and May also tend to see above-average precipitation. The driest month is July, with just 22mm. That's 318mm less than February, 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
Piraí 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 January, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 2km/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
61 days until Spring
It is currently winter in Piraí do Sul, which began on June 21, 2026. Piraí 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 April at around 27°C, while the coldest stretch bottoms out in June near 9°C. Spring is next, beginning on September 23, 2026 — 61 days from now.
Spring
Temperatures range from 11 to 25°C. Rainfall is heavy, totalling around 322mm across the season with a monthly average of 107mm. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 17 to 27°C. Rainfall is heavy, totalling around 756mm across the season with a monthly average of 252mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 12 to 27°C. Rainfall is heavy, totalling around 388mm across the season with a monthly average of 129mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 9 to 21°C. Precipitation is moderate at around 300mm for the season, averaging 100mm per month. Winds are generally light, averaging 2km/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 Piraí do Sul is during April and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 82mm per month. By contrast, June can be quite cold with temperatures dropping to 9°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.
Monthly Climate Data
The table below shows monthly climate averages for Piraí 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.