Iguazú Weather in July 2026: what to expect (8.3/10)

The month in detail

What to expect in July

July is peak dry season in Iguazú. The air is warm and humidity more bearable than in the rainy season. Rain risk remains low (19.0% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if September (8.5/10) remains theoretically better.

July ranks 4 out of 12 months in Iguazú. Compared to June: +2°F daytime, 12 pts fewer rainy days, +0.6h of sun per day.

This month's conditions

What it's like in July

UV index

4 · moderate

protect during midday hours

Feels like

comfortable

14°

Daylight

10.5h of daylight

Air quality

good

AQI 21

Compare

Is July the right month?

The best month in Iguazú is September (8.5/10), 0.2 pt higher than July.

See September →See all 12 months →

Context

Our verdict

Iguazu, the world's most impressive falls (UNESCO): 275 cascades over 1.7 miles, 260 ft high, Argentina-Brazil border. September is my favorite month (8.8/10): 64-82°F, 28% rain, powerful flow after southern rains, mild temperatures.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

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Stay

Hotels & rentals · Iguazú

Expedia →

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Activities

Tours, tickets, experiences

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Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · Iguazú

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.

Country · Argentina

🗣️LanguageSpanish

💶CurrencyArgentine Peso ($)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘCheap · 2/5

🌡️ Climate

🌍Climate typeTropical

📈Climate trend ⓘStable

🔥Hottest monthJanuary · 90°F

❄️Coolest monthJune · 73°F

🌧️Rainiest month ⓘJanuary · 54%

🏝️ Tropical stay

🌞Dry season ⓘMay → Sep

🌧️Wet season ⓘDec → Mar

🌀Cyclones ⓘSeason Nov-Apr

Explore

Other destinations in July

If July doesn't convince you for this destination, compare with others.

Similar climate

Nearby

Porto AlegreBrazil577 km

FlorianópolisBrazil623 km

São PauloBrazil824 km

RosarioArgentina1006 km

Other top picks

DurbanSouth Africa8.3

MauiUnited States8.3

TofoMozambique8.3

Hawaii / MauiUnited States8.4

PeruPeru8.2

← June August →

🗺️ See all 754 destinations on the map

Location

Where is Iguazú ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Argentina

Tropical climate with a 8.5 → 4.8 gap between best and worst month. 10 years of ERA5 data to choose by project.

25.69°S · 54.44°W

Questions

Frequently asked questions

What is the best time to visit Iguazú?

September is the best month with 82°F highs, 64°F lows, 7.4h of sunshine and 28.0% rainy days. The months of September & April offer comparable conditions.

How many hours of sunshine does Iguazú get in September?

Iguazú averages 7.4 sunshine hours per day in September. It is the sunniest month with a climate score of 8.0/10.

What is the rainiest month in Iguazú?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Iguazú in September?

In September, overnight lows reach 64°F, while afternoon highs average 82°F.

Is Iguazú good in winter?

In winter (December-February), Iguazú scores 4.7/10 on average — Difficult period — prefer the peak season.. The best month overall remains September with a score of 8.0/10.

When should you avoid Iguazú?

January is the most difficult month to visit Iguazú, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Do you need sun protection in Iguazú in July?

The average UV index reaches 4 in July in Iguazú (moderate), with about 10.5h of daylight. Protect during midday hours.