Puerto Iguazú Temperature by Month

Puerto Iguazú, Misiones, Argentina has an average annual maximum temperature of 29°C (84°F), with moderate seasonal shifts ranging from 24°C (75°F) in June to 32°C (90°F) in January. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Seasonal changes in Puerto Iguazú bring a little variety without extreme temperature swings. Nighttime lows range from 22°C (72°F) in January to 13°C (55°F) in June.

The chart below illustrates the average maximum day and minimum night temperatures in Puerto Iguazú by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. January, the warmest month of the year, receives 198 hours of sunshine.

The chart below shows the average temperature throughout the year:

Puerto Iguazú'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:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 Puerto Iguazú, June is the coolest month, with average highs of 24°C (75°F) and humidity around 89%, considered very high. In January, the warmest month, temperatures average 32°C (90°F) with 78% 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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Puerto Iguazú's weather, including monthly rainfall, sunshine hours, and humidity, visit our Puerto Iguazú climate page.