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Foz do Iguaçu Weather in December
Foz do Iguaçu in December sees very high temperatures, with highs around 32°C (90°F) and overnight lows of 21°C (70°F). Rainfall is fairly high at around 194 mm (7.6 in) on average, so pack waterproofs just in case.
Rainfall in Foz do Iguaçu in December
This month experiences about 9 days of rain according to historical data, averaging 194 mm (7.6 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Foz do Iguaçu in December
Expect highs of 32°C (90°F) in Foz do Iguaçu in December, with nights dropping to around 21°C (70°F). It's usually most comfortable outside during the morning and later in the day. With lows of 21°C (70°F), the nights are warm and generally comfortable.
Sunshine in Foz do Iguaçu in December
There are approximately 233 hours of sunshine this month, resulting in mostly clear days.December in Foz do Iguaçu can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Foz do Iguaçu Temperature in December
Min Temperature
21°C (70°F)
Max Temperature
32°C (90°F)
Chance of Rain
28%
Precipitation
194 mm (7.6 in)
Rainy days
9 days
Humidity
74%
Sunshine
233 hours
Percentage Sunshine
Foz do Iguaçu Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Foz do Iguaçu - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Foz do Iguaçu typically stay consistent throughout December, with daily highs averaging around 32°C (90°F). Nights are warm, with lows typically ranging from 19°C (66°F) to 21°C (70°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Foz do Iguaçu in December
Browse day-by-day weather records for Foz do Iguaçu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Foz do Iguaçu historical weather extremes in December
Our historical data for Foz do Iguaçu spans 1976 to 2025, revealing these weather extremes.
- The hottest December day on record in Foz do Iguaçu reached 40°C (104°F) (December 9, 1985).
- The lowest daytime temperature in December was 21°C (70°F), recorded on December 13, 2010.
- Nighttime temperatures dropped to 8°C (46°F) on December 14, 2010, marking the coldest December night on record.
Best Places in Brazil in December
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Foz do Iguaçu in December
Warm but pleasant conditions in Foz do Iguaçu in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Foz do Iguaçu in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming8/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Foz do Iguaçu 3-Day Forecast
More climate data for Foz do Iguaçu
Temperature Rainfall Sunshine Humidity
See the full Foz do Iguaçu climate overview or explore weather in Brazil.
Popular in December
Where to go in December - average daytime high across popular destinations.
Fortaleza
31°C (88°F) Rio de Janeiro
30°C (86°F) Salvador
29°C (84°F) Búzios
27°C (81°F) Gramado28°C (82°F) Florianópolis28°C (82°F) Sao Paulo28°C (82°F) Paraty27°C (81°F) Bucket list
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