Luján weather in April

In April, Luján sees average daytime highs of 23°C and overnight lows near 12°C, with 96 mm of rain across 8.3 wet days and about 11.2 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 46% 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 Luján's 6th-clearest and 9th-windiest month. For the whole year in context, see Luján's year-round climate.

Daytime high
23°
6th warmest
Overnight low
12°
7th coldest
Rainfall
96 mm
8.3 wet days
Daylight
11 h 06 min
7:23 AM – 6:31 PM
Cloud cover
49%
6th clearest
Wind
12 km/h
9th windiest
Solar energy
3.69 kWh/m²
Travel score
7.2
out of 10

Luján is city in Buenos Aires Province, Argentina.

Founded
1738

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 24°C in the first days to 21°C by the end.

A typical April day in Luján reaches about 23°C in the afternoon and slips back to 12°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 27°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)
12514
22414
32414
42414
52414
62414
72413
82413
92313
102313
112313
122313
132313
142312
152312
162312
172212
182212
192212
202212
212212
222211
232211
242211
252111
262111
272111
282111
292111
302111

Luján weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 18°917.814.15.8
Feb28° / 18°1018.313.36.3
Mar26° / 16°927.312.37.3
Apr23° / 12°968.311.27.2
May19° / 665.910.26.6
Jun16° / 545.89.75.3
Jul15° / 585.89.95.0
Aug17° / 615.510.76.2
Sep19° / 716.511.86.7
Oct22° / 12°1199.312.96.9
Nov25° / 14°948.213.87.2
Dec28° / 17°938.814.36.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16337
26238
36139
46139
55941
65941
75842
85743
95743
105743
115743
125743
135743
145743
155743
165743
175842
185842
195842
205842
215842
225842
235842
245842
255842
265644
275644
285644
295644
305644

Chance of precipitation in April

Any precipitation

Luján gets around 96 mm of rain over 8.3 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 26% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
125
225
326
427
527
628
728
829
929
1029
1129
1229
1329
1428
1528
1627
1727
1826
1926
2026
2126
2225
2325
2425
2524
2624
2724
2823
2923
3023

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1392622130
2392522131
3402622121
4402622111
5412622111
6422621101
743262191
844262191
945262081
1046252081
1148251971
1249251871
1351251761
1452251661
1554251551
1654251551
1755251451
1855251451
1958251340
2059241340
2160241240
2260241240
2360241240
2461231240
2562231230
2662231230
2763221230
2863221230
2964211230
3065211220

Wind in April

Winds average 12 km/h in April.

Across April, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 7:11 AM to 7:34 AM, and sunset from 6:51 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:116:51
211.67:126:50
311.67:126:49
411.67:136:47
511.57:146:46
611.57:156:44
711.57:166:43
811.47:166:42
911.47:176:40
1011.37:186:39
1111.37:196:37
1211.37:196:36
1311.27:206:35
1411.27:216:33
1511.27:226:32
1611.17:236:31
1711.17:236:29
1811.17:246:28
1911.07:256:27
2011.07:266:26
2111.07:276:24
2210.97:276:23
2310.97:286:22
2410.97:296:21
2510.87:306:19
2610.87:316:18
2710.87:316:17
2810.77:326:16
2910.77:336:15
3010.77:346:14

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 3.69 kWh/m².

For context, solar energy here swings from a low near 2.26 kWh/m² to a high of 7.44 kWh/m² in December across the year — April's 3.69 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
153.7Moderate
163.7Moderate
173.7Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.4Moderate
253.4Moderate
263.4Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.2Moderate
Planning a trip in April

Is April a good time to visit Luján?

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

7.2
Sightseeing
2nd-best month of the year
5.3
Beach & pool
6th-best month of the year

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

What to pack for Luján in April

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

In April, Luján sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

Sea temperature near Luján in April

The nearest coast averages about 21°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in January at about 25°C and coldest in July near 13°C.

It's comfortable for a long swim from Nov 9 to Apr 20 — about 5.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar23Refreshing
Apr21Refreshing
May17Cool
Jun14Bracing
Jul13Bracing
Aug13Bracing
Sep15Cool
Oct18Cool
Nov21Refreshing
Dec23Refreshing

UV index in Luján 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 Luján peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Luján 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 Luján is worst in August — around 20 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodAug 1619 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb11Good
Mar12Moderate
Apr11Good
May14Moderate
Jun16Moderate
Jul16Moderate
Aug20Moderate
Sep15Moderate
Oct13Moderate
Nov10Good
Dec11Good
Location & terrain

Where is Luján?

Luján sits at 34.6°S, 59.1°W, 17 m above sea level, in Argentina. The nearest listed city is Pilar, 22 km away.

Topography around Luján

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

Within 3 km, the terrain around Luján has only modest variations in elevation — a maximum elevation change of 25 m around an average of 24 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, only modest variations in elevation — a maximum elevation change of 83 m.

The land around Luján is covered by artificial surfaces (49%), trees (26%) and grassland (20%) within 3 km, cropland (52%) and grassland (28%) within 16 km, and cropland (42%) and grassland (27%) within 80 km.

3 km
25 m
16 km
62 m
80 km
83 m
treesgrasslandcroplandartificial surfaceswaterwetland
April weather nearby: Pilar 22 km · Mercedes 30 km · Moreno 31 km · José C. Paz 32 km · Tortuguitas 35 km · San Miguel 37 km · Merlo 37 km · Muñiz 37 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 Luján (-34.5664°, -59.1148°, elevation 17 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).