Rosario weather in April

In April, Rosario sees average daytime highs of 23°C and overnight lows near 13°C, with 103 mm of rain across 7.9 wet days and about 11.2 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 47% of the time in April, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of April to 10 h 42 min by month's end. Set against the rest of the year, April is Rosario's 8th-clearest and 8th-windiest month. For the whole year in context, see Rosario's year-round climate.

Daytime high
23°
7th warmest
Overnight low
13°
7th coldest
Rainfall
103 mm
7.9 wet days
Daylight
11 h 12 min
7:27 AM – 6:38 PM
Cloud cover
47%
8th clearest
Wind
11 km/h
8th windiest
Solar energy
3.72 kWh/m²
Travel score
7.4
out of 10

Rosario is city in Argentina.

Density
5,298/km²
people per km²
Founded
1852

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 25°C in the first days to 22°C by the end.

A typical April day in Rosario reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, April runs about 4°C cooler than March and about 4°C warmer than May.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52415
62414
72414
82414
92414
102414
112414
122414
132414
142313
152313
162313
172313
182313
192313
202313
212313
222213
232212
242212
252212
262212
272212
282212
292212
302212

Rosario weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°1028.113.95.5
Feb29° / 18°1118.513.26.0
Mar27° / 17°1267.612.37.1
Apr23° / 13°1037.911.27.4
May19° / 10°66610.36.8
Jun16° / 404.69.95.9
Jul16° / 365105.6
Aug18° / 534.610.86.9
Sep21° / 10°615.811.87.2
Oct24° / 13°1119.712.87.1
Nov26° / 15°1158.313.77.1
Dec29° / 18°1048.614.16.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 11% of April, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26040
36040
46040
55941
65941
75842
85743
95743
105743
115743
125743
135743
145842
155941
165941
175941
185941
195941
205941
215941
225941
235941
245842
255842
265743
275743
285644
295644
305644

Chance of precipitation in April

Any precipitation

Rosario gets around 103 mm of rain over 7.9 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 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
327
427
527
627
727
827
927
1027
1126
1226
1325
1425
1524
1624
1724
1824
1924
2024
2124
2224
2324
2425
2525
2625
2725
2825
2925
3025

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1292527172
2302527162
3312526162
4322426152
5332426152
6342426142
7352425132
8372425132
9382424122
10392523122
11402522112
12422521102
13432620102
1444261992
1545271892
1646271782
1747281681
1848281571
1949281571
2051281461
2151281461
2252281361
2352281361
2453271361
2553261461
2654261460
2755251460
2855241560
2956231560
3057221560

Wind in April

Winds average 11 km/h in April.

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

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 42 min at the start of April to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over April. Sunrise moves from 7:16 AM to 7:38 AM, and sunset from 6:58 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:166:58
211.77:176:57
311.67:186:55
411.67:196:54
511.67:196:53
611.57:206:51
711.57:216:50
811.57:216:49
911.47:226:47
1011.47:236:46
1111.47:246:45
1211.37:246:43
1311.37:256:42
1411.37:266:41
1511.27:266:40
1611.27:276:38
1711.27:286:37
1811.17:296:36
1911.17:296:35
2011.17:306:33
2111.07:316:32
2211.07:326:31
2311.07:326:30
2410.97:336:29
2510.97:346:28
2610.97:356:27
2710.87:356:25
2810.87:366:24
2910.87:376:23
3010.77:386:22

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 3.72 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 7.31 kWh/m² in December across the year — April's 3.72 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.0Bright
84.0Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
Planning a trip in April

Is April a good time to visit Rosario?

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

7.4
Sightseeing
1st-best month of the year
5.8
Beach & pool
7th-best month of the year

April is one of the better times to visit Rosario for general sightseeing.

What to pack for Rosario in April

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

In April, Rosario sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes. About 8 days see rain.

light clothes

UV index in Rosario in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Rosario peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme

Air quality in Rosario 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 Rosario is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (April, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2220 µg/m³Apr 157 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb8Good
Mar8Good
Apr7Good
May8Good
Jun10Good
Jul13Moderate
Aug20Moderate
Sep19Moderate
Oct10Good
Nov8Good
Dec8Good
Location & terrain

Where is Rosario?

Rosario sits at 32.9°S, 60.6°W, 38 m above sea level, in Argentina. The nearest listed city is Gobernador Gálvez, 9.0 km away.

Topography around Rosario

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

Within 3 km, the terrain around Rosario has only modest variations in elevation — a maximum elevation change of 41 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 57 m; within 80 km, only modest variations in elevation — a maximum elevation change of 121 m.

The land around Rosario is covered by artificial surfaces (53%) and water (21%) within 3 km, wetland (30%) and grassland (20%) within 16 km, and cropland (58%) and wetland (24%) within 80 km.

3 km
41 m
16 km
57 m
80 km
121 m
treesgrasslandcroplandartificial surfaceswaterwetland
April weather nearby: Gobernador Gálvez 9.0 km · Granadero Baigorria 12 km · Pérez 13 km · Capitán Bermúdez 16 km · Arroyo Seco 26 km · Villa Constitución 43 km · Carcarañá 49 km · Casilda 50 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 Rosario (-32.9468°, -60.6393°, elevation 38 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).