Iguazú Falls in December
In December, Iguazú Falls averages 31°C (87°F) during the day and 22°C (71°F) at night, with frequent rain — about 20 days of the month see precipitation (206 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
December is one of the wetter and less comfortable months in Iguazú Falls. If your dates are flexible, consider a different time of year.
How December compares to the rest of the year in Iguazú Falls
December is one of the warmest months in Iguazú Falls (2nd of 12) and moderately rainy compared to the rest of the year (4th of 12). Daytime temperature runs 4°C above the annual average (27°C). December runs 1°C warmer than November (30°C) and stays flat into January.
December sunrise & sunset in Iguazú Falls
Times shown for Iguazú Falls local time (America/Argentina/Cordoba), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Iguazú Falls — December
Golden-hour and blue-hour windows for the 15th of December, in Iguazú Falls's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Iguazú Falls in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (Shoulder) and Iguazú Falls's popularity.
Crowds & pricing — December in Iguazú Falls
Iguazú Falls is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — December in Iguazú Falls
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Iguazú Falls in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 31°C / 87°F | 23°C / 73°F | 218 mm | 26 | — |
| February | 31°C / 87°F | 22°C / 71°F | 147 mm | 20 | — |
| March | 29°C / 85°F | 21°C / 69°F | 172 mm | 20 | — |
| April | 27°C / 81°F | 18°C / 65°F | 130 mm | 14 | — |
| May | 23°C / 74°F | 15°C / 59°F | 174 mm | 16 | — |
| June | 22°C / 72°F | 14°C / 57°F | 131 mm | 12 | — |
| July | 23°C / 73°F | 13°C / 56°F | 98 mm | 9 | — |
| August | 25°C / 77°F | 15°C / 59°F | 95 mm | 10 | — |
| September | 28°C / 82°F | 17°C / 63°F | 132 mm | 14 | — |
| October | 29°C / 83°F | 19°C / 66°F | 219 mm | 19 | — |
| November | 30°C / 85°F | 20°C / 67°F | 164 mm | 17 | — |
| December | 31°C / 87°F | 22°C / 71°F | 206 mm | 20 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Iguazú Falls in December →
Frequently asked questions
How hot is Iguazú Falls in December?
In December, Iguazú Falls averages a high of 31°C (87°F) and a low of 22°C (71°F) — generally hot.
Does it rain a lot in Iguazú Falls in December?
December is quite rainy in Iguazú Falls, with about 20 rainy days on average.
Is December a good time to visit Iguazú Falls?
December is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Iguazú Falls in December?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full December packing list for Iguazú Falls for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.