Foz do Iguacu weather in August

In August, Foz do Iguacu sees average daytime highs of 25°C and overnight lows near 14°C, with 94 mm of rain across 6.9 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 53% 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 Foz do Iguacu's 1st-clearest and 1st-windiest month. For the whole year in context, see Foz do Iguacu's year-round climate.

Daytime high
25°
9th warmest
Overnight low
14°
3rd coldest
Rainfall
94 mm
6.9 wet days
Daylight
11 h 06 min
8:10 AM – 7:15 PM
Cloud cover
42%
1st clearest
Wind
11 km/h
1st windiest
Solar energy
4.07 kWh/m²
Travel score
7.6
out of 10

Foz do Iguacu is human settlement in Brazil.

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 Foz do Iguacu 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)
12413
22413
32413
42413
52414
62414
72414
82414
92414
102414
112414
122514
132514
142514
152514
162514
172514
182514
192514
202515
212515
222515
232615
242615
252615
262615
272615
282615
292615
302615
312615

How August really feels in Foz do Iguacu

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.

Foz do Iguacu 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°15715.413.43.9
Feb31° / 22°15213.912.94.1
Mar30° / 21°14112.512.24.8
Apr28° / 18°1389.211.46.3
May24° / 15°1629.210.87.1
Jun22° / 14°1379.210.46.9
Jul22° / 13°1178.510.67.2
Aug25° / 14°946.911.17.6
Sep27° / 16°1549.911.86.7
Oct28° / 19°19813.212.65.4
Nov30° / 20°15811.513.25.0
Dec31° / 21°18414.913.64.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% 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%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46139
56040
66040
76040
85941
95941
105941
115941
126040
136040
146040
156040
166040
176139
186238
196238
206337
216436
226535
236634
246634
256733
266733
276733
286832
296733
306733
316733

Chance of precipitation in August

Any precipitation

Foz do Iguacu gets around 94 mm of rain over 6.9 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
1322
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 (%)
14033252
24033262
33932262
43932263
53932263
63932263
73932263
83932263
93932263
103932263
113832263
123833263
133833263
143833263
153734263
163734263
173735253
183635263
193635263
203535263
213535273
223435273
233435283
243435283
253335284
263335284
273335284
283235294
293235295
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 8:21 AM to 7:55 AM, and sunset from 7:08 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.88:217:08
210.88:207:09
310.88:197:09
410.88:197:10
510.98:187:10
610.98:177:11
710.98:177:11
810.98:167:12
910.98:157:12
1011.08:147:13
1111.08:147:13
1211.08:137:13
1311.08:127:14
1411.18:117:14
1511.18:107:15
1611.18:107:15
1711.18:097:16
1811.18:087:16
1911.28:077:17
2011.28:067:17
2111.28:057:18
2211.28:047:18
2311.38:037:18
2411.38:027:19
2511.38:017:19
2611.38:007:20
2711.47:597:20
2811.47:587:21
2911.47:577:21
3011.47:567:21
3111.47:557:22

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 Foz do Iguacu?

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

7.6
Sightseeing
1st-best month of the year
6.8
Beach & pool
2nd-best month of the year

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

What to pack for Foz do Iguacu in August

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

In August, Foz do Iguacu 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 Foz do Iguacu 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 Foz do Iguacu 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 Foz do Iguacu 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 Foz do Iguacu 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 Foz do Iguacu?

Foz do Iguacu sits at 25.5°S, 54.6°W, 179 m above sea level, in Brazil. The nearest listed city is Presidente Franco, 3.0 km away.

Topography around Foz do Iguacu

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Foz do Iguacu.

Within 3 km, the terrain around Foz do Iguacu has only modest variations in elevation — a maximum elevation change of 128 m around an average of 176 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 200 m; within 80 km, significant variations in elevation — a maximum elevation change of 568 m.

The land around Foz do Iguacu is covered by artificial surfaces (48%) and trees (37%) within 3 km, trees (40%) and cropland (24%) within 16 km, and trees (44%) and cropland (39%) within 80 km.

3 km
128 m
16 km
200 m
80 km
568 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Presidente Franco 3.0 km · Iguazu 6.0 km · Ciudad del Este 8.0 km · Santa Terezinha de Itaipu 22 km · São Miguel do Iguaçu 42 km · Colonia Wanda 47 km · Puerto Esperanza 53 km · Medianeira 57 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Foz do Iguacu (-25.5478°, -54.5881°, elevation 179 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).