Luján weather in October

In October, Luján sees average daytime highs of 22°C and overnight lows near 12°C, with 119 mm of rain across 9.3 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 37% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 24 min by month's end. Set against the rest of the year, October is Luján's 9th-clearest and 2nd-windiest month. For the whole year in context, see Luján's year-round climate.

Daytime high
22°
7th warmest
Overnight low
12°
6th coldest
Rainfall
119 mm
9.3 wet days
Daylight
12 h 54 min
6:15 AM – 7:08 PM
Cloud cover
55%
9th clearest
Wind
14 km/h
2nd windiest
Solar energy
5.55 kWh/m²
Travel score
6.9
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 October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical October day in Luján reaches about 22°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 17°C and 27°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12010
22010
32010
42110
52111
62111
72111
82111
92111
102111
112211
122211
132212
142212
152212
162212
172212
182212
192212
202312
212312
222312
232312
242312
252312
262312
272312
282312
292313
302313
312313

Luján weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 1st-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
34852
44951
54852
64852
74852
84852
94852
104951
114951
125050
135050
145050
155149
165149
175149
185050
195149
205149
215248
225248
235347
245347
255347
265347
275446
285446
295446
305446
315545

Chance of precipitation in October

Any precipitation

Luján gets around 119 mm of rain over 9.3 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
328
429
529
629
730
830
930
1030
1129
1229
1329
1429
1529
1629
1729
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2829
2929
3029
3129

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1781750
2761860
3761860
4741970
5722071
6702181
7702181
8682291
96722101
106623101
116523111
126523111
136424111
146324121
156324121
166125122
176125122
186026122
195926132
205926132
215926132
225926132
235826133
245826133
255727133
265627143
275627143
285528143
295528143
305329153
315329153

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over October. Sunrise moves from 6:35 AM to 5:58 AM, and sunset from 6:56 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:356:56
212.46:346:56
312.46:326:57
412.56:316:58
512.56:306:59
612.56:287:00
712.66:277:00
812.66:257:01
912.66:247:02
1012.76:237:03
1112.76:217:04
1212.76:207:05
1312.86:197:05
1412.86:187:06
1512.86:167:07
1612.96:157:08
1712.96:147:09
1813.06:137:10
1913.06:117:11
2013.06:107:11
2113.16:097:12
2213.16:087:13
2313.16:077:14
2413.26:067:15
2513.26:057:16
2613.26:037:17
2713.36:027:18
2813.36:017:19
2913.36:007:20
3013.45:597:21
3113.45:587:22

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.55 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 — October's 5.55 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
246.0Bright
256.0Bright
266.0Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in October

Is October a good time to visit Luján?

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

6.9
Sightseeing
4th-best month of the year
4.7
Beach & pool
7th-best month of the year

October is a reasonable time to visit Luján for sightseeing.

What to pack for Luján in October

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

In October, Luján sees daytime highs around 22°C and nights near 12°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Luján in October

The nearest coast averages about 18°C in October — 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 October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 (very high — sun protection essential). 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 October

GoodModeratePoorUnhealthyVery unhealthy

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