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Best time to visit Iguazu Falls: month by month
Short answer
The falls flow all year, but March–May and August–November are the most comfortable, with highs of 23–30°C and steady water. December to February is hot (31–32°C) and humid, with the most water and crowds. June–July is cooler at around 22–24°C and drier, but Argentine winter holidays fill the parks in July.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 31°C | 22°C | 18 | very high |
| Feb | 31°C | 21°C | 11 | high |
| Mar | 30°C | 21°C | 14 | medium |
| Apr | 27°C | 18°C | 9 | medium |
| May | 23°C | 15°C | 8 | low |
| Jun | 22°C | 13°C | 9 | low |
| Jul | 24°C | 14°C | 5 | very high |
| Aug | 25°C | 15°C | 8 | medium |
| Sep | 27°C | 17°C | 10 | medium |
| Oct | 27°C | 18°C | 17 | medium |
| Nov | 30°C | 19°C | 12 | medium |
| Dec | 32°C | 22°C | 11 | high |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Autumn (Mar–May)
Highs ease from 30°C to 23°C with 8–14 rainy days; pleasant for walking and steady water flow.
Winter (Jun–Aug)
Cooler at 22–25°C by day and 13–15°C at night; July is the driest month with about 5 rainy days, but holidays bring crowds.
Spring (Sep–Nov)
Warming from 27°C to 30°C; October can be wet (about 17 rainy days) and the falls are often full.
Summer (Dec–Feb)
Hot and humid at 31–32°C with heavy rain; the falls are at their fullest and the parks at their busiest.
Events worth planning around
- Full-moon walks to the Devil's Throat (five nights around each full moon; check availability)
- Easter week (March or April), a busy holiday period
- Argentine winter holidays (July)
When to avoid
July and January are the most crowded months. After very heavy rain, the Devil's Throat walkway and boat trips can close for days, so allow a spare day in the wet season.
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Common questions
When is the best time to visit Iguazú?
March–May and August–November for mild weather and good water flow.
When do the falls have the most water?
Usually in the rainy summer months, December to February, though heavy rain can come at other times too.
Are the falls ever dry?
Rarely. In droughts the flow can drop sharply for weeks, so check recent photos before a big trip.