Iguazu in Winter
In winter (June, July and August), Iguazu sees average daytime highs around 23°C and overnight lows near 14°C, with 348 mm of rain over about 25 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 22°C in early June to 26°C by late August. The sky is clear or mostly clear about 47% of the time across winter, and the air most often feels dry.
Winter is Iguazu's best season of the year to visit on our travel score. For the whole year in context, see Iguazu's year-round climate.
- Avg daytime high
- 23°C
- coldest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 348 mm
- 25 wet days
- Avg wind
- 10 km/h
- Travel score
- 7.3
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Iguazu in Winter
Over the season highs climb from about 22°C in early June to 26°C by late August.
A typical winter day in Iguazu reaches about 23°C and drops to 14°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Iguazu
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Iguazu weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 22° | 157 | 15.3 | 13.4 | 3.9 |
| Feb | 31° / 22° | 151 | 14 | 12.9 | 4.1 |
| Mar | 30° / 21° | 141 | 12.5 | 12.2 | 4.8 |
| Apr | 28° / 18° | 138 | 9.4 | 11.4 | 6.3 |
| May | 24° / 15° | 162 | 9.1 | 10.8 | 7.1 |
| Jun | 22° / 14° | 137 | 9.2 | 10.4 | 6.9 |
| Jul | 22° / 13° | 118 | 8.5 | 10.6 | 7.2 |
| Aug | 25° / 14° | 94 | 7 | 11.1 | 7.7 |
| Sep | 27° / 16° | 155 | 9.9 | 11.8 | 6.7 |
| Oct | 28° / 19° | 197 | 13.2 | 12.6 | 5.5 |
| Nov | 30° / 20° | 158 | 11.7 | 13.3 | 5.0 |
| Dec | 31° / 21° | 184 | 14.8 | 13.6 | 4.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 47% of the time across winter.
Chance of precipitation in Winter
Iguazu gets around 348 mm of rain over 25 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 10 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 30 min in early June to 11 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.4 kWh/m².
Is winter a good time to visit Iguazu?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is one of the better times to visit Iguazu for general sightseeing.
What to pack for Iguazu in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Iguazu sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes and rain gear. About 25 days see rain.
UV index in Iguazu in Winter
Clear-sky midday UV across winter averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Iguazu peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 14 | 11 | 9 | 6 | 5 | 5 | 6 | 6 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | High | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 11 | Extreme |
| Apr | 9 | Very high |
| May | 6 | High |
| Jun | 5 | High |
| Jul | 5 | Moderate |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Iguazu in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Iguazu is worst in September — around 23 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (March, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 8 | 8 | 9 | 10 | 10 | 11 | 14 | 23 | 14 | 10 | 8 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 8 | Good |
| Apr | 9 | Good |
| May | 10 | Good |
| Jun | 10 | Good |
| Jul | 11 | Good |
| Aug | 14 | Moderate |
| Sep | 23 | Moderate |
| Oct | 14 | Moderate |
| Nov | 10 | Good |
| Dec | 8 | Good |
Where is Iguazu?
Iguazu sits at 25.6°S, 54.6°W, 177 m above sea level, in Argentina. The nearest listed city is Presidente Franco, 5.0 km away.
Topography around Iguazu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Iguazu.
Within 3 km, the terrain around Iguazu has only modest variations in elevation — a maximum elevation change of 139 m around an average of 175 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 198 m; within 80 km, significant variations in elevation — a maximum elevation change of 568 m.
The land around Iguazu is covered by trees (50%) and artificial surfaces (30%) within 3 km, trees (52%) and cropland (22%) within 16 km, and trees (46%) and cropland (38%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Iguazu (-25.5991°, -54.5735°, elevation 177 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.