What to expect in Iguazu Falls in December
December is a mixed month in Iguazu Falls. You get 31° / 20°, but manageable crowds at the big attractions. Worth it for the right traveller.
Iguazu Falls weather in December
Typical conditions in Iguazu Falls during December, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 31°C 88°F |
|---|---|
| Average low | 20°C 68°F |
| Rainfall | Wet 170/100 |
| Total rainfall | 187 mm7.4 in |
| Rainy days | 10 |
| Daylight | 13 h 43 min |
| How it feels | Hot — midday shade matters |
Average highs sit around 31°C with lows near 20°C. Expect a fair amount of rain, so plan indoor backups.
Crowds & demand
Crowd levels are Moderate for Iguazu Falls — manageable crowds at the big attractions.
Prices & value
This month counts as shoulder season: prices close to the yearly average.
What to pack
Lightweight, breathable clothes, strong sun protection and a refillable bottle — highs near 31°C make midday heat the main constraint. Add a compact rain shell and shoes you do not mind soaking; this is one of the wetter months.
What it costs
Costs in December sit around the yearly average for Iguazu Falls — neither a bargain nor a squeeze. Booking a few weeks out is usually enough. Compared with the most expensive month of the year, you are looking at roughly 5% less.
Who this month suits
- Anyone travelling on a budget
- Visitors who want to catch a festival
Events & what’s on
Look out for New Year's Eve while you’re there.
- New Year's Eve — Fireworks and lakeside parties mark New Year's Eve as Brazilian summer travelers fill the falls region.
Iguazu Falls in December compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| October | 28° / 17° | Low | $ | 51 |
| November | 30° / 19° | Moderate | $$ | 46 |
| December · This month | 31° / 20° | Moderate | $$ | 33 |
| January | 32° / 21° | High | $$ | 29 |
| February | 32° / 21° | Moderate | $$ | 41 |
These months score higher for Iguazu Falls on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in December
If the destination is negotiable but the month is not, these places are at their best in December.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
