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Best time to visit · Argentina
June – September are the best time to visit Iguazú on the climate data: July scores 87/100, with highs around 71°F (22°C) and 3.3 in (85 mm) of rain. April & May are good shoulder-season months. The toughest months are October and December & January, mainly because of rain.
Highs run from 71°F to 89°F across the year, and the yearly total is about 63.5 in (1613 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 89°F32°C | 89°F32°C | 89°F32°C | 84°F29°C | 75°F24°C | 72°F22°C | 71°F22°C | 76°F25°C | 81°F27°C | 85°F29°C | 87°F30°C | 89°F32°C |
| Avg low | 74°F24°C | 74°F23°C | 71°F22°C | 66°F19°C | 59°F15°C | 57°F14°C | 55°F13°C | 57°F14°C | 61°F16°C | 67°F20°C | 69°F21°C | 73°F23°C |
| Rain | 5.8 in147 mm | 5.1 in129 mm | 4.6 in117 mm | 4.9 in124 mm | 6.4 in163 mm | 4.3 in108 mm | 3.3 in85 mm | 2.8 in70 mm | 4.8 in121 mm | 8.3 in211 mm | 6.3 in159 mm | 7.0 in179 mm |
| Humidity | 73% | 72% | 71% | 74% | 80% | 83% | 80% | 74% | 71% | 75% | 73% | 71% |
| Cloud | 65% | 64% | 54% | 51% | 55% | 57% | 52% | 48% | 53% | 60% | 57% | 67% |
| Comfort | 54 | 57 | 64 | 72 | 70 | 83 | 87 | 87 | 81 | 57 | 61 | 51 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 247 m (810 ft), close to Iguazú's own ~168 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
Iguazú is in the Southern Hemisphere, so the seasons run opposite to North America and Europe.
The warmest stretch of the year, with highs near 89°F (32°C). About 17.9 in (455 mm) of rain falls across these months, 28% of the year's total. Lows bottom out around 73°F (23°C). It holds the toughest stretch on our comfort score (December & January), averaging 54/100.
Temperatures slide from 89°F highs in March to 75°F by May. About 15.9 in (404 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 59°F (15°C). April & May score well without being the very best (season average 69/100).
The coldest season, with highs of 71–76°F (22–25°C) and lows down to 55°F (13°C). It's the driest season, with only about 10.4 in (263 mm) of rain, 16% of the year's total. June – August are among the best-scoring months (season average 86/100).
Temperatures climb through the season, from 81°F highs in September to 87°F by November. It's the wettest season, with about 19.3 in (491 mm) of rain, 30% of the year's total. October feels humid, with humidity near 75%. Comfort peaks here: September ranks with the year's best, and the season averages 66/100.
By comfort score: 4 Great, 4 Good and 4 Fair. Great months: June – September. Tap a month for its own guide.
June – September are the best time to visit Iguazú on the climate data: July scores 87/100, with highs around 71°F (22°C) and 3.3 in (85 mm) of rain. April & May are good shoulder-season months. The toughest months are October and December & January, mainly because of rain.
October is the wettest month, averaging about 8.3 in (211 mm) of rain. August is the driest, with about 2.8 in (70 mm). The yearly total is around 63.5 in (1613 mm).
July is the coldest, with average lows of 55°F (13°C) and highs of 71°F (22°C). The warmest is January, with average highs of 89°F (32°C).
Not very: summer (December – February) humidity averages 72%, and highs peak around 89°F (32°C), so heat matters more than mugginess.
The wettest three-month stretch is October – December, with about 21.6 in (549 mm) of rain combined. The driest stretch is June – August, with about 10.4 in (263 mm).
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