Mercedes weather in October

In October, Mercedes sees average daytime highs of 22°C and overnight lows near 11°C, with 111 mm of rain across 9.5 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 Mercedes's 9th-clearest and 2nd-windiest month. For the whole year in context, see Mercedes's year-round climate.

Daytime high
22°
7th warmest
Overnight low
11°
6th coldest
Rainfall
111 mm
9.5 wet days
Daylight
12 h 54 min
6:16 AM – 7:09 PM
Cloud cover
55%
9th clearest
Wind
14 km/h
2nd windiest
Solar energy
5.54 kWh/m²
Travel score
6.8
out of 10

Mercedes is city in Buenos Aires Province, Argentina.

Founded
1745

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 Mercedes reaches about 22°C in the afternoon and slips back to 11°C overnight — a 11°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
42010
52110
62110
72110
82111
92111
102111
112111
122211
132211
142211
152211
162211
172211
182212
192212
202212
212312
222312
232312
242312
252312
262312
272312
282312
292312
302312
312312

Mercedes 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°93814.15.8
Feb28° / 17°96813.36.4
Mar26° / 15°887.512.37.3
Apr22° / 12°1008.411.27.2
May18° / 646.210.26.5
Jun15° / 515.79.75.2
Jul15° / 485.59.94.8
Aug17° / 575.210.76.1
Sep19° / 676.511.86.7
Oct22° / 11°1119.512.96.8
Nov25° / 14°958.413.87.2
Dec28° / 16°919.214.36.3

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 (%)
15149
25050
35050
45050
55050
65050
74951
84951
95050
105050
115050
125050
135149
145149
155050
165149
175149
185149
195149
205248
215248
225248
235248
245248
255347
265347
275347
285446
295545
305545
315644

Chance of precipitation in October

Any precipitation

Mercedes gets around 111 mm of rain over 9.5 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 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
227
328
428
529
629
730
830
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1930
2030
2131
2231
2331
2431
2531
2631
2731
2830
2930
3030
3130

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 69% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1811540
2811540
3791650
4781750
5761761
6751861
7741961
8731971
9731971
10712081
11712081
12712081
13702091
14692191
15692191
16692191
176722101
186722101
196722101
206622111
216523111
226523111
236423121
246324121
256324121
266324121
276225121
286026131
296026131
305927131
315728141

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 6:36 AM to 6:00 AM, and sunset from 6:57 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:366:57
212.46:356:58
312.46:346:59
412.56:326:59
512.56:317:00
612.56:297:01
712.66:287:02
812.66:277:03
912.66:257:03
1012.76:247:04
1112.76:237:05
1212.76:217:06
1312.86:207:07
1412.86:197:08
1512.96:177:08
1612.96:167:09
1712.96:157:10
1813.06:147:11
1913.06:137:12
2013.06:117:13
2113.16:107:14
2213.16:097:15
2313.16:087:16
2413.26:077:16
2513.26:067:17
2613.26:057:18
2713.36:047:19
2813.36:037:20
2913.36:027:21
3013.46:017:22
3113.46:007:23

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.54 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 7.43 kWh/m² in December across the year — October's 5.54 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.1Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
256.0Bright
266.0Intense
276.0Intense
286.1Intense
296.1Intense
306.2Intense
316.2Intense
Planning a trip in October

Is October a good time to visit Mercedes?

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

6.8
Sightseeing
4th-best month of the year
4.7
Beach & pool
7th-best month of the year

October is a reasonable time to visit Mercedes for sightseeing.

What to pack for Mercedes in October

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

In October, Mercedes sees daytime highs around 22°C and nights near 11°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

UV index in Mercedes 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 Mercedes peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Mercedes 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 Mercedes 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 Mercedes?

Mercedes sits at 34.7°S, 59.4°W, 40 m above sea level, in Argentina. The nearest listed city is Luján, 30 km away.

Topography around Mercedes

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

Within 3 km, the terrain around Mercedes has only modest variations in elevation — a maximum elevation change of 24 m around an average of 38 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 49 m; within 80 km, only modest variations in elevation — a maximum elevation change of 89 m.

The land around Mercedes is covered by artificial surfaces (35%), grassland (33%) and trees (21%) within 3 km, cropland (55%) and grassland (36%) within 16 km, and cropland (62%) and grassland (26%) within 80 km.

3 km
24 m
16 km
49 m
80 km
89 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Luján 30 km · Navarro 42 km · San Antonio de Areco 45 km · Carmen de Areco 47 km · Pilar 52 km · Moreno 59 km · Chivilcoy 60 km · José C. Paz 63 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 Mercedes (-34.6507°, -59.4314°, elevation 40 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).