December · Argentina
Best time to visit Iguazu Falls in December Weather, crowds & prices
Weather in Iguazu Falls in December
Average temperature 26°C, 160 mm of rain, about 29 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
6.2/10
Ranked #11 of 12 months
- Avg temp
- 26°C
- Rainfall
- 160 mm
- Humidity
- 73%
- Days with 6h+ sun
- 29
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $$ · Moderate Cost ($$)
December in Iguazu Falls scores 6.2/10 for nature and wildlife travel - ranked #11 of 12. Expect around 26°C, 160 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Iguazú Falls spans the Argentina-Brazil border, with walkways above and below the river's main cascades.
December in Iguazu Falls — middling scores, decent value
December averages 26°C (78°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
Monthly rainfall reaches 160 mm — wet for this destination — but about 29 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 6.2/10 here, 11th of 12 months, against 8.7/10 in the destination's best month.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on mid-season pricing, with crowds are light for this destination.
Flexible dates? August scores 2.5 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Iguazu Falls in December?
- In December, Iguazu Falls averages 26°C, 160 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 6.2/10.
- Is December a good time to visit Iguazu Falls?
- December earns a 6.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Iguazu Falls in December?
- Expect about 160 mm of rain in December. Average humidity is 73% and there are about 29 days with 6+ hours of sunshine.
Curated in Iguazu Falls
Tickets & experiences
Things to do in Iguazu Falls
Iguazu Falls, Argentina. Live activities and tours from GetYourGuide, matched to this destination.