Avellaneda weather in October

In October, Avellaneda sees average daytime highs of 20°C and overnight lows near 13°C, with 109 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 18°C in the first days to 21°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 Avellaneda's 9th-clearest and 2nd-windiest month. For the whole year in context, see Avellaneda's year-round climate.

Daytime high
20°
7th warmest
Overnight low
13°
6th coldest
Rainfall
109 mm
9.3 wet days
Daylight
12 h 54 min
6:12 AM – 7:05 PM
Cloud cover
54%
9th clearest
Wind
17 km/h
2nd windiest
Solar energy
5.57 kWh/m²
Travel score
6.5
out of 10

Avellaneda is city in the province of Buenos Aires, Argentina.

Density
6,442/km²
people per km²
Founded
1852

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 18°C in the first days to 21°C by the end.

A typical October day in Avellaneda reaches about 20°C in the afternoon and slips back to 13°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11812
21812
31812
41912
51912
61912
71913
81913
91913
101913
112013
122013
132013
142013
152014
162014
172014
182014
192014
202114
212114
222114
232114
242114
252114
262114
272114
282114
292114
302114
312115

Avellaneda 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
Jan27° / 20°837.114.17.2
Feb26° / 20°927.813.37.2
Mar24° / 18°887.312.37.6
Apr21° / 15°947.911.27.0
May17° / 11°63610.26.1
Jun14° / 676.49.74.6
Jul13° / 676.89.94.1
Aug15° / 666.410.75.1
Sep17° / 11°747.111.86.0
Oct20° / 13°1099.312.96.5
Nov23° / 16°948.113.87.3
Dec26° / 18°81814.37.3

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 15% of October, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25050
35050
45050
54951
64951
74951
84951
95050
105050
115149
125248
135248
145248
155347
165347
175347
185347
195347
205347
215347
225347
235446
245446
255446
265446
275446
285446
295446
305545
315545

Chance of precipitation in October

Any precipitation

Avellaneda gets around 109 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
228
328
429
529
629
730
830
930
1030
1130
1230
1330
1430
1530
1630
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 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1702460
2702460
3682570
4662680
5642691
6642691
76227101
86127111
96027121
105927131
115728141
125628151
135528152
145428162
155229172
165229172
175129182
185029192
194929193
204829203
214829203
224729203
234630213
244630213
254530213
264531213
274431223
284331224
294232224
304132234
314132234

Wind in October

Winds average 17 km/h in October.

Across October, daily wind ranges from about 17 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light 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 6:32 AM to 5:55 AM, and sunset from 6:53 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:326:53
212.46:316:54
312.46:296:54
412.56:286:55
512.56:276:56
612.56:256:57
712.66:246:58
812.66:226:58
912.66:216:59
1012.76:207:00
1112.76:187:01
1212.76:177:02
1312.86:167:03
1412.86:147:03
1512.96:137:04
1612.96:127:05
1712.96:117:06
1813.06:097:07
1913.06:087:08
2013.06:077:09
2113.16:067:09
2213.16:057:10
2313.16:047:11
2413.26:037:12
2513.26:017:13
2613.26:007:14
2713.35:597:15
2813.35:587:16
2913.35:577:17
3013.45:567:18
3113.45:557:19

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.57 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 7.5 kWh/m² in December across the year — October's 5.57 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.1Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
246.0Bright
256.0Intense
266.1Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
316.3Intense
Planning a trip in October

Is October a good time to visit Avellaneda?

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

6.5
Sightseeing
7th-best month of the year
3.4
Beach & pool
7th-best month of the year

October is a reasonable time to visit Avellaneda for sightseeing.

What to pack for Avellaneda in October

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

In October, Avellaneda sees daytime highs around 20°C and nights near 13°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Avellaneda 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 offshore 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 Avellaneda in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Avellaneda peaks around January 14 at about 12 (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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 12Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Avellaneda 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 Avellaneda is worst in June — around 25 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2325 µg/m³Dec 1612 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar16Moderate
Apr17Moderate
May22Moderate
Jun25Moderate
Jul25Moderate
Aug24Moderate
Sep19Moderate
Oct16Moderate
Nov13Moderate
Dec12Moderate
Location & terrain

Where is Avellaneda?

Avellaneda sits at 34.7°S, 58.4°W, 13 m above sea level, in Argentina. The nearest listed city is Barracas, 2.0 km away.

Topography around Avellaneda

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

Within 3 km, the terrain around Avellaneda has only modest variations in elevation — a maximum elevation change of 28 m around an average of 7 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 138 m.

The land around Avellaneda is covered by artificial surfaces (87%) within 3 km, artificial surfaces (58%) and water (32%) within 16 km, and grassland (29%), water (25%) and cropland (21%) within 80 km.

3 km
28 m
16 km
57 m
80 km
138 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Barracas 2.0 km · Sarandí 3.0 km · Valentín Alsina 4.0 km · Buenos Aires 5.0 km · Boedo 5.0 km · Lanús 6.0 km · Balvanera 6.0 km · Remedios de Escalada de San Martín 8.0 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 Avellaneda (-34.6602°, -58.3674°, elevation 13 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).