Puerto Iguazu weather by month & the best time to visit
Argentina · small town · humid subtropical climate

The best time to visit Puerto Iguazu is August — its sunniest month (Sunshine Score 81/100), with July and June close behind. Puerto Iguazu averages about 2,500 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 70 mm of rain in August.
When is the best time to visit Puerto Iguazu?
For sunshine, the best time to visit Puerto Iguazu is August, then July and June. The dullest month is May (66/100, 163 mm of rain). The full month-by-month picture is in the table below.
How sunny is Puerto Iguazu?
Puerto Iguazu gets a lot of sun: around 2,500 hours a year. Conditions barely change through the year — only 15 Sunshine Score points separate August from May. It ranks #35 of 41 destinations in Argentina for annual sunshine, below the national median of 2,741 hours. The year's 1,613 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 67 | 31° / 88°F | 23° / 73°F | 147 mm | 12 |
| February | 70 | 31° / 88°F | 23° / 73°F | 129 mm | 11 |
| March | 72 | 31° / 88°F | 21° / 70°F | 117 mm | 10 |
| April | 71 | 28° / 82°F | 18° / 64°F | 124 mm | 7 |
| May | 66 | 23° / 73°F | 14° / 57°F | 163 mm | 5 |
| June | 74 | 21° / 70°F | 13° / 55°F | 108 mm | 4 |
| July | 78 | 21° / 70°F | 12° / 54°F | 85 mm | 4 |
| August | 81 | 24° / 75°F | 13° / 55°F | 70 mm | 5 |
| September | 71 | 27° / 81°F | 16° / 61°F | 121 mm | 6 |
| October | 66 | 29° / 84°F | 19° / 66°F | 211 mm | 8 |
| November | 66 | 30° / 86°F | 20° / 68°F | 159 mm | 10 |
| December | 66 | 31° / 88°F | 22° / 72°F | 179 mm | 11 |
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Puerto Iguazu: questions and answers
What kind of destination is Puerto Iguazu?
Puerto Iguazu is a small town in Argentina with a humid subtropical climate.
How many hours of sunshine does Puerto Iguazu get a year?
Puerto Iguazu gets about 2,500 hours of sunshine a year, at its best around August.
When is the best time to visit Puerto Iguazu?
The sunniest time to visit Puerto Iguazu is August, when the Sunshine Score peaks at 81/100 (with July and June close behind). Expect daytime highs around 24°C / 75°F.
What is the least sunny month in Puerto Iguazu?
May is the least sunny month in Puerto Iguazu, scoring 66/100 with about 163 mm of rain.
How strong is the sun in Puerto Iguazu?
The typical midday UV index in Puerto Iguazu peaks around 12 (extreme) in January, easing to about 4 (moderate) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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