Juan José Castelli weather in October

In October, Juan José Castelli sees average daytime highs of 30°C and overnight lows near 18°C, with 120 mm of rain across 10 wet days and about 12.6 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 30°C by the end. The sky is clear or mostly clear about 41% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 12 min at the start of October to 13 hours by month's end. Set against the rest of the year, October is Juan José Castelli's 6th-clearest and 1st-windiest month. For the whole year in context, see Juan José Castelli's year-round climate.

Daytime high
30°
6th warmest
Overnight low
18°
7th coldest
Rainfall
120 mm
10 wet days
Daylight
12 h 36 min
6:29 AM – 7:06 PM
Cloud cover
51%
6th clearest
Wind
13 km/h
1st windiest
Solar energy
5.54 kWh/m²
Travel score
5.2
out of 10

Juan José Castelli is human settlement.

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 29°C in the first days to 30°C by the end.

A typical October day in Juan José Castelli reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 37°C. Set against its neighbours, October runs about 2°C warmer than September and about 1°C cooler than November.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62917
72917
82917
92918
103018
113018
123018
133018
143018
153018
163018
173018
183018
193019
203019
213019
223019
233019
243019
253019
263019
273019
283019
293019
303019
313019

How October really feels in Juan José Castelli

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Juan José Castelli weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 23°12411.213.43.3
Feb32° / 22°13711.112.93.8
Mar30° / 21°13711.112.24.8
Apr27° / 18°1179.311.46.5
May24° / 14°627.810.77.2
Jun22° / 13°436.810.47.1
Jul22° / 11°315.810.57.6
Aug25° / 13°404.511.18.1
Sep28° / 15°586.711.87.0
Oct30° / 18°1201012.65.2
Nov31° / 20°14010.113.34.6
Dec33° / 22°13511.113.63.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75743
85644
95644
105644
115644
125545
135545
145545
155446
165545
175446
185446
195446
205545
215545
225644
235545
245545
255644
265644
275644
285644
295743
305743
315743

Chance of precipitation in October

Any precipitation

Juan José Castelli gets around 120 mm of rain over 10 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
229
329
430
530
631
731
831
932
1032
1132
1232
1333
1433
1534
1634
1734
1834
1934
2034
2134
2233
2333
2433
2533
2633
2733
2833
2933
3033
3133

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 27% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1431822161
2411822171
3401822182
4391823182
5381823192
6361824203
7351724203
8341724213
9331724224
10321724224
11311724225
12301724235
13291824236
14281825236
15261925247
16251925247
17232025258
18222025258
19212125259
20202124259
211921242510
221921242610
231921242611
241921242611
251821242511
261821232611
271921232512
281921232512
291921232612
301920232612
311920222612

Wind in October

Winds average 13 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in October

DaylightNight

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

Days grow by about 48 minutes over October. Sunrise moves from 6:44 AM to 6:17 AM, and sunset from 6:59 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:446:59
212.36:436:59
312.36:427:00
412.36:417:00
512.36:407:01
612.46:397:01
712.46:387:02
812.46:377:02
912.46:367:03
1012.56:357:03
1112.56:347:04
1212.56:337:04
1312.56:327:05
1412.66:317:05
1512.66:307:06
1612.66:297:06
1712.66:287:07
1812.76:277:07
1912.76:267:08
2012.76:257:08
2112.76:247:09
2212.86:247:10
2312.86:237:10
2412.86:227:11
2512.86:217:11
2612.96:207:12
2712.96:207:13
2812.96:197:13
2912.96:187:14
3013.06:177:15
3113.06:177:15

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 2.67 kWh/m² to a high of 6.73 kWh/m² in December across the year — October's 5.54 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in October

Is October a good time to visit Juan José Castelli?

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

5.2
Sightseeing
7th-best month of the year
7.0
Beach & pool
3rd-best month of the year

October is a reasonable time to visit Juan José Castelli for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Juan José Castelli in October

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

In October, Juan José Castelli sees daytime highs around 30°C and nights near 18°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Juan José Castelli in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Juan José Castelli peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 18UV 14Jul 11UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5Moderate
Jul5Moderate
Aug6High
Sep8Very high
Oct7High
Nov12Extreme
Dec14Extreme

Air quality in Juan José Castelli 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 Juan José Castelli is worst in August — around 31 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (April, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2330 µg/m³Apr 236 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar8Good
Apr6Good
May6Good
Jun7Good
Jul15Moderate
Aug31Moderate
Sep29Moderate
Oct18Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Juan José Castelli?

Juan José Castelli sits at 25.9°S, 60.6°W, 113 m above sea level, in Argentina. The nearest listed city is Tres Isletas, 48 km away.

Topography around Juan José Castelli

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

Within 3 km, the terrain around Juan José Castelli has only modest variations in elevation — a maximum elevation change of 9 m around an average of 110 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 20 m; within 80 km, only modest variations in elevation — a maximum elevation change of 64 m.

The land around Juan José Castelli is covered by cropland (30%), artificial surfaces (29%) and grassland (22%) within 3 km, trees (56%) and cropland (30%) within 16 km, and trees (75%) within 80 km.

3 km
9 m
16 km
20 m
80 km
64 m
treesshrubsgrasslandcroplandartificial surfaces
October weather nearby: Tres Isletas 48 km · Presidencia Roque Sáenz Peña 96 km · Quitilipi 110 km · Machagai 123 km · Las Breñas 135 km · General José de San Martín 143 km · Charata 152 km · Pirané 153 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 Juan José Castelli (-25.9466°, -60.6201°, elevation 113 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).