Weather in Iguazu in May 2025
Average weather
Average temperature in Iguazu in May
Going from a maximum of +28°C during the day to a minimum of +9°C during the night, the temperature in May averages around +24°C.
The average maximum temperature goes down 26% by the end of the month, compared with the beginning of the month, from +28°C to +23°C.
Is Iguazu warm or cold in May?
Iguazu is typically warm in May.
Maximum temperatures go down compared to the previous month from +27°C to +23°C. The minimum temperature also goes down from +18°C to +14°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
May is one of the coolest months in Iguazu, here is the comparison with other months:
Climate in Iguazu in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +23°C | +21°C | ||||
| Min. temperature | ||||||
| +5°C | +1°C | -1°C | ||||
| Max. temperature | ||||||
| +35°C | +32°C | +30°C | ||||
| Rainfall | ||||||
| 161 mm | 172 mm | 143 mm | ||||
| Wind | ||||||
| 1 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 82% | 84% | 85% | ||||
| Air pressure | ||||||
| 1013 HPa | 1015 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 10 | 12 | 11 | ||||
| Cloudy days | ||||||
| 4 | 6 | 7 | ||||
| Rainy days | ||||||
| 14 | 12 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as ok as in April. It’s getting colder in May. From +27°C in the day, the average maximum temperature lowers to +23°C. Prepare for more rain. Average rainfall goes from 161 mm to 172 mm. Humidity rises from 82% to 84%. Winds are stronger in comparison to April, going up from 1 m/s to 2 m/s on average. The good news is there are likely to be more sunny days in May, from 10 to 12.
June brings much the same weather, it remains ok.
Wind
The average wind speed is 1 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Iguazu is gradually decreasing during May, going from 2 m/s to 1 m/s over the course of the month.
Rain
How was the weather last May in Iguazu?
Climate Change over Years
The climate in Iguazu in May has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+26°C) and the highest in 2020 (+28°C). The driest year was 2020 with only 1219 mm of rainfall, and the wettest year was 1983 with 3257 mm.
FAQ
Is May a good time to visit Iguazu?
Can you sunbathe in Iguazu in May?
Is Iguazu rainy in May?
Is it sunny in Iguazu in May?
Other cities in Argentina
Monthly weather in Iguazu
Source of the data
For this page, we’ve looked at the typical weather in Iguazu, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.