Climate Insights for Foz do Iguaçu

The climate in Foz do Iguaçu is warm and mild. The average annual temperature is 22°C and approximately 1744mm of precipitation falls per year. February is the wettest month, receiving around 241mm of rainfall. Foz do Iguaçu 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: January, February, April. The coldest months are June, July, September, when temperatures can drop to 10°C.

Temperatures in Foz do Iguaçu vary considerably across the year, with a 22°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 32°C and the mean temperature sits around 27°C. June is the coolest month, with minimum temperatures around 10°C and an average of 14°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.

Foz do Iguaçu is a fairly wet location, receiving approximately 1744mm of precipitation annually, which averages out to around 145mm per month. The wettest month is February, averaging 241mm of rainfall. March and August also tend to see above-average precipitation. The driest month is June, with just 23mm. That's 218mm 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.

Foz do Iguaçu is relatively calm, with an average annual wind speed of 2km/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 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, 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 1km/h gap between the calmest and windiest months.

It is currently winter in Foz do Iguaçu, which began on June 21, 2026. Foz do Iguaçu 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 January at around 32°C, while the coldest stretch bottoms out in June near 10°C. Spring is next, beginning on September 23, 2026 — 61 days from now.

The best time to visit Foz do Iguaçu is during April, July, September and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 79mm per month. By contrast, January can be uncomfortably hot with highs reaching 32°C, while June is the coldest period with lows dropping to 10°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 Foz do Iguaçu 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.