Foz do Iguaçu Temperature by Month
The average annual maximum temperature in Foz do Iguaçu, Paraná, Brazil is 29°C (84°F), with daytime highs ranging from 24°C (75°F) in July to 33°C (91°F) in January. This page covers monthly averages, day-night differences, and how Foz do Iguaçu compares to cities worldwide.
Foz do Iguaçu Monthly Temperatures
In Foz do Iguaçu, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 22°C (72°F) in January to 13°C (55°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Foz do Iguaçu by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. January, the city's warmest month, gets 230 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Foz do Iguaçu Temperatures: 1976-2026
Browse day-by-day temperature records for Foz do Iguaçu spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Foz do Iguaçu vs Brazil
The map below shows the annual temperature across Brazil. You can also select individual months if you want to compare a specific time of year.
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Foz do Iguaçu vs World: Temperature Compared
Foz do Iguaçu's average annual maximum temperature is 29°C (84°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Foz do Iguaçu?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Foz do Iguaçu, July is the coolest month, with average highs of 24°C (75°F) and humidity around 83% — considered very high. In January, the warmest month, temperatures average 33°C (91°F) with 77% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Foz do Iguaçu's weather — including monthly rainfall, sunshine hours, and humidity — visit our Foz do Iguaçu climate page.
