Climate Overview
The climate in Foz do Iguaçu / Cataratas International Airport is warm and mild. The average annual temperature is 22°C and approximately 1549mm of precipitation falls per year. Foz do Iguaçu / Cataratas International Airport receives a notable amount of rainfall throughout the year, including during its driest month. Foz do Iguaçu / Cataratas International Airport 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, December. The coldest months are July, June, August, when temperatures can drop to 14°C.
Temperature
Foz do Iguaçu / Cataratas International Airport sees moderate temperature variation throughout the year, ranging from 14°C to 31°C. The warmest month is January, when average highs reach 31°C and the mean temperature sits around 26°C. July is the coolest month, with minimum temperatures around 14°C and an average of 18°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 4°C shift in average temperatures.
Precipitation
Foz do Iguaçu / Cataratas International Airport is a fairly wet location, receiving approximately 1549mm of precipitation annually, which averages out to around 129mm per month. The wettest month is October, averaging 195mm of rainfall. December and May also tend to see above-average precipitation. The driest month is August, with just 86mm. That's 109mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Foz do Iguaçu / Cataratas International Airport is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Foz do Iguaçu / Cataratas International Airport, which began on March 20, 2026. Foz do Iguaçu / Cataratas International Airport 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 31°C, while the coldest stretch bottoms out in July near 14°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 17 to 30°C. Rainfall is heavy, totalling around 428mm across the season with a monthly average of 143mm. Winds are generally light, averaging 15km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 21 to 31°C. Rainfall is heavy, totalling around 444mm across the season with a monthly average of 148mm. Winds are generally light, averaging 13km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 16 to 30°C. Rainfall is heavy, totalling around 392mm across the season with a monthly average of 131mm. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 14 to 25°C. Precipitation is moderate at around 285mm for the season, averaging 95mm per month. Winds are generally light, averaging 14km/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 Foz do Iguaçu / Cataratas International Airport is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 89mm per month. By contrast, January can be uncomfortably hot with temperatures reaching 31°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 Foz do Iguaçu / Cataratas International Airport 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.
