Summer
Dec → Feb31°
nights 21 to 22°
- 13 rainy days · 175 mm
- 10.8 h of sun
When is the best time to visit Iguazú Falls?
- Jan31°not recommended
- Feb31°not recommended
- Mar30°fair
- Apr27°recommended
- May23°recommended
- Jun22°fair
- Jul23°fair
- Aug25°recommended
- Sep28°recommended
- Oct29°fair
- Nov30°not recommended
- Dec31°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Iguazú Falls, month by month
The table of records, month by month
| Month | High | Low | Sunshine | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|---|
| January | 31° | 22° | 10.8 h | 227 mm | 16 d | |
| February | 31° | 21° | 10.6 h | 132 mm | 11 d | |
| March | 30° | 21° | 10.1 h | 159 mm | 12 d | |
| April | 27° | 18° | 9.3 h | 125 mm | 9 d | ✓ |
| May | 23° | 14° | 7.7 h | 163 mm | 10 d | ✓ |
| June | 22° | 14° | 8 h | 130 mm | 10 d | |
| July | 23° | 13° | 8.4 h | 78 mm | 6 d | |
| August | 25° | 15° | 9.1 h | 83 mm | 6 d | ✓ |
| September | 28° | 17° | 9 h | 111 mm | 8 d | ✓ |
| October | 29° | 19° | 9.3 h | 253 mm | 13 d | |
| November | 30° | 20° | 10.4 h | 130 mm | 11 d | |
| December | 31° | 21° | 10.9 h | 166 mm | 13 d |
The four seasons in Iguazú Falls, in figures
What the 2015-2024 records (Garganta del Diablo) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Autumn
Mar → May23 to 30°
nights 14 to 21°
- 10 rainy days · 149 mm
- 9 h of sun
Winter
Jun → Aug22 to 25°
nights 13 to 15°
- 7 rainy days · 97 mm
- 8.5 h of sun
Spring
Sep → Nov28 to 30°
nights 17 to 20°
- 11 rainy days · 165 mm
- 9.6 h of sun
Book early for April to May and August to September
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in Iguazú Falls, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In December there are 13h44 of daylight, in June 10h33, a difference of 3h11.
13h34Jan
13hFeb
12h18Mar
11h31Apr
10h53May
10h33Jun
10h41Jul
11h13Aug
11h59Sep
12h45Oct
13h25Nov
13h44Dec
Calculated for the latitude of the reference point "Garganta del Diablo" (-25.69°). Values on the 15th of each month, local solar time.
What to do in Iguazú Falls, month by month
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hiking | ||||||||||||
| Towns & culture |
favourablewith compromisesunfavourable
- Hiking: April, July, August, September
- Towns & culture: February, March, April, May, June, July, August, September, November
Grid derived from the records (temperature, rainfall), not from an opinion.
Travelling off-peak
Month by month, in detail
January
Not recommended31°22° at night
- 227 mm · 16 d
- 10.8 h
Low season, lower prices
February
Not recommended31°21° at night
- 132 mm · 11 d
- 10.6 h
Low season, lower prices
March
Fair30°21° at night
- 159 mm · 12 d
- 10.1 h
Low season, lower prices
April
Recommended27°18° at night
- 125 mm · 9 d
- 9.3 h
Busy, without the crush
May
Recommended23°14° at night
- 163 mm · 10 d
- 7.7 h
Busy, without the crush
June
Fair22°14° at night
- 130 mm · 10 d
- 8 h
Low season, lower prices
July
Fair23°13° at night
- 78 mm · 6 d
- 8.4 h
Busy, without the crush
August
Recommended25°15° at night
- 83 mm · 6 d
- 9.1 h
High season, book early
September
Recommended28°17° at night
- 111 mm · 8 d
- 9 h
Busy, without the crush
October
Fair29°19° at night
- 253 mm · 13 d
- 9.3 h
Low season, lower prices
November
Not recommended30°20° at night
- 130 mm · 11 d
- 10.4 h
Low season, lower prices
December
Not recommended31°21° at night
- 166 mm · 13 d
- 10.9 h
Quiet, then the holidays
Read the twelve months in detail
January. 31 °C in the afternoon and 22 °C at night. A very wet month, 227 mm of rain over 16 days. Plenty of sunshine: 10.8 h a day on average. Low season: fewer people, lower prices.
February. 31 °C in the afternoon and 21 °C at night. Expect 11 days of rain in the month (132 mm). Plenty of sunshine: 10.6 h a day on average. Low season: fewer people, lower prices.
March. 30 °C in the afternoon and 21 °C at night. Expect 12 days of rain in the month (159 mm). Plenty of sunshine: 10.1 h a day on average. Low season: fewer people, lower prices.
April. 27 °C in the afternoon and 18 °C at night. Expect 9 days of rain in the month (125 mm). Plenty of sunshine: 9.3 h a day on average. Busy season, without the crush.
May. Mild, 23 °C in the afternoon and 14 °C early in the morning. Expect 10 days of rain in the month (163 mm). Expect 7.7 h of sunshine a day. Busy season, without the crush.
June. Mild, 22 °C in the afternoon and 14 °C early in the morning. Expect 10 days of rain in the month (130 mm). Expect 8 h of sunshine a day. Low season: fewer people, lower prices.
July. Mild, 23 °C in the afternoon and 13 °C early in the morning. Rain stays light: 78 mm over 6 days. Expect 8.4 h of sunshine a day. Busy season, without the crush.
August. 25 °C in the afternoon and 15 °C at night. Rain stays light: 83 mm over 6 days. Plenty of sunshine: 9.1 h a day on average. High season: book early.
September. 28 °C in the afternoon and 17 °C at night. Expect 8 days of rain in the month (111 mm). Plenty of sunshine: 9 h a day on average. Busy season, without the crush.
October. 29 °C in the afternoon and 19 °C at night. Expect 13 days of rain in the month (253 mm). Plenty of sunshine: 9.3 h a day on average. Low season: fewer people, lower prices.
November. 30 °C in the afternoon and 20 °C at night. Expect 11 days of rain in the month (130 mm). Plenty of sunshine: 10.4 h a day on average. Low season: fewer people, lower prices.
December. 31 °C in the afternoon and 21 °C at night. Expect 13 days of rain in the month (166 mm). Plenty of sunshine: 10.9 h a day on average. Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Iguazú Falls?
April to May and August to September: over these months, recorded highs range from 23 to 28 °C, with 8 days of rain a month on average (2015-2024 records, Garganta del Diablo).
Which month should you avoid in Iguazú Falls?
January: it is the wettest of the months to avoid, with 227 mm over 16 days of rain on average, according to 2015-2024 records at the reference point (Garganta del Diablo).
What is the hottest month in Iguazú Falls?
January, with 31 °C on average in the afternoon and 22 °C at night. 2015-2024 records (Garganta del Diablo).
What is the coldest month in Iguazú Falls?
June, with 22 °C at best during the day and 14 °C at night. 2015-2024 records (Garganta del Diablo).
What is the driest month in Iguazú Falls?
July: 78 mm over 6 days of rain, against 253 mm in October, the wettest month.
Which month has the most sunshine in Iguazú Falls?
December, with 10.9 h of sunshine a day on average. Note that this counts clear skies, not the length of the day.
When is the best time to hike in Iguazú Falls?
April, July, August, September: highs between 12 and 29 °C and no more than 9 days of rain a month according to 2015-2024 records (Garganta del Diablo), the safest windows for walking.
Plan this trip
📒 The free printable Iguazú Falls guide: itinerary, map, where to sleep→
🧭 When to visit Argentina: the country overview→
🗓️ Best time to visit: all our destinations→
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Photos: Susanne Jutzeler, suju-foto / Pexels · INDU BIKASH SARKER / Pexels · Olivier Cleynen / CC BY 4.0 (Wikimedia Commons) · Tommaso / Pexels