Iguazu weather in April

In April, Iguazu sees average daytime highs of 28°C and overnight lows near 18°C, with 138 mm of rain across 9.4 wet days and about 11.4 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 26°C by the end. The sky is clear or mostly clear about 43% of the time in April, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of April to 11 h 06 min by month's end. Set against the rest of the year, April is Iguazu's 4th-clearest and 9th-windiest month. For the whole year in context, see Iguazu's year-round climate.

Daytime high
28°
7th warmest
Overnight low
18°
6th coldest
Rainfall
138 mm
9.4 wet days
Daylight
11 h 24 min
6:57 AM – 6:20 PM
Cloud cover
51%
4th clearest
Wind
8 km/h
9th windiest
Solar energy
4.3 kWh/m²
Travel score
6.3
out of 10

Iguazu is human settlement.

Founded
1902

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 29°C in the first days to 26°C by the end.

A typical April day in Iguazu reaches about 28°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, April runs about 3°C cooler than March and about 4°C warmer than May.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52919
62919
72919
82919
92819
102819
112819
122819
132819
142819
152818
162818
172818
182718
192718
202718
212718
222718
232718
242717
252717
262617
272617
282617
292617
302617

How April really feels in Iguazu

Once humidity and wind are folded in, April 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

April 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 April compares with the rest of the year at a glance. April is the 7th-warmest and 9th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35743
45644
55644
65743
75743
85743
95842
105842
115842
125842
135842
145842
155941
165941
175842
185842
195842
205842
215842
225842
235842
245743
255743
265743
275743
285644
295644
305644

Chance of precipitation in April

Any precipitation

Iguazu gets around 138 mm of rain over 9.4 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
133
233
332
432
532
632
732
832
932
1032
1132
1232
1332
1432
1532
1633
1733
1833
1933
2033
2132
2232
2332
2431
2531
2630
2730
2829
2929
3028

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
136174430
246174430
347174329
447174328
557174328
658174327
768174326
868174325
979174324
1079184323
11810184322
12810194320
13810204319
14810204318
15810214317
16810224316
17810234316
18810244315
19810254214
20810274213
21810284112
22910294111
23910304011
24911313910
25101132399
26101133388
27111233378
28111233367
29121334357
30131334346

Wind in April

Winds average 8 km/h in April.

Across April, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 48 min at the start of April to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over April. Sunrise moves from 6:50 AM to 7:03 AM, and sunset from 6:36 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:506:36
211.76:506:35
311.76:516:34
411.76:516:33
511.76:516:32
611.66:526:31
711.66:526:30
811.66:536:29
911.66:536:28
1011.56:546:27
1111.56:546:26
1211.56:556:25
1311.56:556:23
1411.46:566:22
1511.46:566:21
1611.46:576:20
1711.46:576:19
1811.46:586:19
1911.36:586:18
2011.36:586:17
2111.36:596:16
2211.36:596:15
2311.27:006:14
2411.27:006:13
2511.27:016:12
2611.27:016:11
2711.17:026:10
2811.17:026:09
2911.17:036:09
3011.17:036:08

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.3 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 — April's 4.3 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.5Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.2Bright
204.1Bright
214.1Bright
224.0Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
Planning a trip in April

Is April a good time to visit Iguazu?

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

6.3
Sightseeing
6th-best month of the year
6.9
Beach & pool
1st-best month of the year

April is a reasonable time to visit Iguazu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Iguazu in April

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

In April, Iguazu sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: rain gear. About 9 days see rain.

light clothesrain gear

UV index in Iguazu in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 9 (very high — sun protection essential). 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 April

GoodModeratePoorUnhealthyVery unhealthy

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