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Iguazu in December: Weather, Average temperature and Climate

Discover the weather for Iguazu in December and if it’s a good time to travel (based on historical data).
Check flight prices to Iguazu on Avionero:
December

Weather in Iguazu in December 2024

OK Weather
Hot
🌧️
Rainy
December could be a good time to visit Iguazu, as the weather is generally fine. The average high temperature is around +88°F, and there are typically 7 sunny days in December. However, expect about 18 rainy days, and total monthly rainfall of approximately 196 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • December is usually the hottest month of the year in Iguazu;

Average weather

☀️
+88°F
Avg. max. temperature
+50°F
Min.
+104°F
Max.
196 mm
Total precipitation
77%
Avg. humidity
1 m/s
Avg. wind
7 ☀️
Sunny Days
3 ⛅️
Cloudy
18 🌦
Rainy
Our opinion: Iguazu has OK weather in December.

Average temperature in Iguazu in December

Here are the expected maximum, average and minimum temperatures in Iguazu for December based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in December is +88°F with a maximum of +99°F and a minimum of +63°F.

The average maximum temperature goes down 20% by the end of the month, compared with the beginning of the month, from +95°F to +88°F.

Is Iguazu warm or cold in December?

Iguazu is typically hot in December.

Maximum temperatures go up compared to the previous month from +84°F to +88°F. The minimum temperature also goes up from +66°F to +70°F.

Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.

December is the hottest month in Iguazu, here is the comparison with other months:

Climate in Iguazu in December

Iguazu weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
Avg. temperature
+84°F+88°F+88°F
Min. temperature
+45°F+50°F+54°F
Max. temperature
+106°F+104°F+104°F
Rainfall
165 mm196 mm191 mm
Wind
2 m/s1 m/s1 m/s
Humidity
76%77%80%
Air pressure
1010 HPa1009 HPa1009 HPa
Sunny days
974
Cloudy days
332
Rainy days
151821
Snowy days
000

December weather is still as ok as in November. It’s getting warmer as December arrives. The average maximum temperature goes up from +84°F to +88°F during the day. Prepare for more rain. Average rainfall goes from 165 mm to 196 mm. Humidity rises from 76% to 77%. Winds are calmer in comparison to November, going down from 2 m/s to 1 m/s on average. The days becoming less sunny, going from 9 sunny days in November to 7 in December.

January brings much the same weather, it remains ok.

Wind

Wind speed in Iguazu in December based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Iguazu is gradually decreasing during December, going from 2 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during December in Iguazu based on historical data.
Last Year
Historical Data
Total precipitation in December is about 138 mm, with a 45% chance of rain on a typical day. The maximum amount of rainfall per day is around 29 mm, which is moderate rain. December is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
December is one of the rainiest months in Iguazu, here is a comparison with other months, total mm:
Iguazu wettest month is October, where a typical day has a 48% chance of precipitation and 208 mm of rainfall per day. August, on the other hand, is the driest month with a mere 29% chance of precipitation and 103 mm of rainfall per day.

How was the weather last December in Iguazu?

This is the weather in Iguazu in December 2023:
1 December
☀️
+95°F
2 December
☀️
+92°F
3 December
☀️
+86°F
4 December
🌧️
+85°F
5 December
🌧️
+81°F
6 December
☁️
+84°F
7 December
🌧️
+78°F
8 December
🌧️
+85°F
9 December
☀️
+88°F
10 December
🌧️
+79°F
11 December
☁️
+85°F
12 December
☀️
+89°F
13 December
☀️
+88°F
14 December
☀️
+91°F
15 December
☀️
+96°F
16 December
☀️
+99°F
17 December
☀️
+98°F
18 December
☀️
+96°F
19 December
☀️
+90°F
20 December
☀️
+83°F
21 December
☀️
+88°F
22 December
☀️
+94°F
23 December
☀️
+84°F
24 December
☁️
+81°F
25 December
☁️
+76°F
26 December
☀️
+85°F
27 December
☀️
+89°F
28 December
☀️
+92°F
29 December
☀️
+84°F
30 December
☀️
+85°F
31 December
☀️
+88°F
In December 2023 Iguazu had 22 sunny days, 4 cloudy days, and 5 rainy days. The average maximum temperature was +88°F, with an absolute maximum of +99°F and a minimum of +75°F. The average humidity was 81%, with a maximum of 100% and a minimum of 41%. The average wind speed was 2 m/s, with a maximum of 5 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change Over the Years

This is how Iguazu climate has changed over the last 43 years.

The climate in Iguazu in December has not changed that much over the last 43 years.

The average temperature was the lowest in 1983 (+78°F) and the highest in 2020 (+83°F). The driest year was 2020 with only 1219 mm of rainfall, and the wettest year was 1983 with 3257 mm.

FAQ

Frequently asked questions about the weather in Iguazu in December:

Is December a good time to visit Iguazu?

It’s always a good time to visit Iguazu, but the weather is changeable in December, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Iguazu in December?

Absolutely, December is hot in Iguazu. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.

Is Iguazu rainy in December?

Iguazu is often rainy in December. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Iguazu in December?

Usually, it’s not very sunny in Iguazu in December, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Argentina

Check out the weather for other cities in Argentina.

Monthly weather in Iguazu

Source of the data

For this page, we’ve looked at the typical weather in Iguazu, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.