Iguazu weather in August

In August, Iguazu sees average daytime highs of 25°C and overnight lows near 14°C, with 94 mm of rain across 7 wet days and about 11.1 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 54% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of August to 11 h 24 min by month's end. Set against the rest of the year, August is Iguazu's 1st-clearest and 1st-windiest month. For the whole year in context, see Iguazu's year-round climate.

Daytime high
25°
9th warmest
Overnight low
14°
3rd coldest
Rainfall
94 mm
7 wet days
Daylight
11 h 06 min
7:10 AM – 6:15 PM
Cloud cover
42%
1st clearest
Wind
11 km/h
1st windiest
Solar energy
4.07 kWh/m²
Travel score
7.7
out of 10

Iguazu is human settlement.

Founded
1902

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical August day in Iguazu reaches about 25°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 31°C. Set against its neighbours, August runs about 3°C warmer than July and about 2°C cooler than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12313
22413
32413
42413
52413
62414
72414
82414
92414
102414
112414
122414
132514
142514
152514
162514
172514
182514
192514
202515
212515
222515
232515
242615
252615
262615
272615
282615
292615
302615
312615

How August really feels in Iguazu

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August 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 August compares with the rest of the year at a glance. August is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°15715.313.43.9
Feb31° / 22°1511412.94.1
Mar30° / 21°14112.512.24.8
Apr28° / 18°1389.411.46.3
May24° / 15°1629.110.87.1
Jun22° / 14°1379.210.46.9
Jul22° / 13°1188.510.67.2
Aug25° / 14°94711.17.7
Sep27° / 16°1559.911.86.7
Oct28° / 19°19713.212.65.5
Nov30° / 20°15811.713.35.0
Dec31° / 21°18414.813.64.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 9% of August, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36040
46040
56040
66040
75941
85941
95941
105941
115941
125941
135941
145941
156040
166139
176139
186238
196337
206337
216535
226535
236634
246634
256832
266832
276832
286832
296931
306931
316832

Chance of precipitation in August

Any precipitation

Iguazu gets around 94 mm of rain over 7 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 23% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
123
223
323
423
523
622
722
822
922
1022
1122
1222
1323
1422
1522
1622
1722
1822
1922
2023
2123
2223
2323
2423
2523
2623
2723
2824
2924
3024
3124

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 36% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13933252
23933262
33933262
43833263
53833263
63833263
73833263
83833263
93833263
103833263
113833263
123733263
133734263
143734263
153735253
163635253
173636253
183636253
193536263
203536263
213436263
223436273
233336273
243336284
253336284
263235284
273235284
283235295
293234295
303134295
313134306

Wind in August

Winds average 11 km/h in August, the windiest month of the year.

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 48 min at the start of August to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over August. Sunrise moves from 7:21 AM to 6:55 AM, and sunset from 6:08 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.87:216:08
210.87:206:09
310.87:196:09
410.87:196:10
510.97:186:10
610.97:176:10
710.97:176:11
810.97:166:11
910.97:156:12
1011.07:146:12
1111.07:146:13
1211.07:136:13
1311.07:126:14
1411.17:116:14
1511.17:106:15
1611.17:106:15
1711.17:096:16
1811.17:086:16
1911.27:076:17
2011.27:066:17
2111.27:056:17
2211.27:046:18
2311.37:036:18
2411.37:026:19
2511.37:016:19
2611.37:006:20
2711.46:596:20
2811.46:586:21
2911.46:576:21
3011.46:566:21
3111.46:556:22

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.07 kWh/m².

For context, solar energy here swings from a low near 2.83 kWh/m² to a high of 6.38 kWh/m² in December across the year — August's 4.07 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.6Moderate
43.7Moderate
53.7Moderate
63.7Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.9Moderate
113.9Moderate
123.9Moderate
134.0Moderate
144.0Moderate
154.0Bright
164.1Bright
174.1Bright
184.1Bright
194.2Bright
204.2Bright
214.3Bright
224.3Bright
234.3Bright
244.4Bright
254.4Bright
264.4Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.6Bright
Planning a trip in August

Is August a good time to visit Iguazu?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.7
Sightseeing
1st-best month of the year
6.7
Beach & pool
2nd-best month of the year

August is one of the better times to visit Iguazu for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Iguazu in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Iguazu sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes. About 7 days see rain.

light clothes

UV index in Iguazu in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighHighVery highExtremeJan 19UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr9Very high
May6High
Jun5High
Jul5Moderate
Aug6High
Sep6High
Oct10Very high
Nov12Extreme
Dec13Extreme

Air quality in Iguazu in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1622 µg/m³Mar 108 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr9Good
May10Good
Jun10Good
Jul11Good
Aug14Moderate
Sep23Moderate
Oct14Moderate
Nov10Good
Dec8Good
Location & terrain

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.

3 km
139 m
16 km
198 m
80 km
568 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Presidente Franco 5.0 km · Foz do Iguacu 6.0 km · Ciudad del Este 13 km · Santa Terezinha de Itaipu 25 km · Colonia Wanda 42 km · São Miguel do Iguaçu 44 km · Puerto Esperanza 47 km · Medianeira 59 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
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).