Rosario weather in October

In October, Rosario sees average daytime highs of 24°C and overnight lows near 13°C, with 111 mm of rain across 9.7 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 25°C by the end. The sky is clear or mostly clear about 43% 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 18 min by month's end. Set against the rest of the year, October is Rosario's 10th-clearest and 1st-windiest month. For the whole year in context, see Rosario's year-round climate.

Daytime high
24°
6th warmest
Overnight low
13°
6th coldest
Rainfall
111 mm
9.7 wet days
Daylight
12 h 48 min
6:23 AM – 7:13 PM
Cloud cover
51%
10th clearest
Wind
13 km/h
1st windiest
Solar energy
5.65 kWh/m²
Travel score
7.1
out of 10

Rosario is city in Argentina.

Density
5,298/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 22°C in the first days to 25°C by the end.

A typical October day in Rosario reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 29°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)
12211
22211
32211
42211
52212
62212
72312
82312
92312
102312
112312
122312
132313
142313
152413
162413
172413
182413
192413
202413
212413
222413
232413
242414
252414
262514
272514
282514
292514
302514
312514

Rosario weather by month

How October compares with the rest of the year at a glance. October 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
Jan30° / 19°1028.113.95.5
Feb29° / 18°1118.513.26.0
Mar27° / 17°1267.612.37.1
Apr23° / 13°1037.911.27.4
May19° / 10°66610.36.8
Jun16° / 404.69.95.9
Jul16° / 365105.6
Aug18° / 534.610.86.9
Sep21° / 10°615.811.87.2
Oct24° / 13°1119.712.87.1
Nov26° / 15°1158.313.77.1
Dec29° / 18°1048.614.16.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35446
45446
55347
65347
75347
85347
95347
105446
115446
125446
135644
145644
155644
165644
175644
185644
195644
205743
215743
225842
235842
245842
255842
265842
275842
285842
295842
305941
315941

Chance of precipitation in October

Any precipitation

Rosario gets around 111 mm of rain over 9.7 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 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
227
327
428
529
629
730
830
930
1030
1130
1229
1329
1429
1529
1630
1730
1830
1930
2030
2130
2231
2331
2431
2531
2631
2730
2830
2930
3030
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 60% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1751681
2741691
37217101
47117111
57117111
66917122
76817132
86618142
96618142
106518152
116319153
126319153
136319153
146120163
156120163
165921164
175921164
185822164
195822164
205722165
215722165
225623165
235423176
245423176
255324176
265324176
275225176
285225176
295026186
304926186
314827196

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.

051015151015202531
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 18 min at the start of October to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over October. Sunrise moves from 6:42 AM to 6:07 AM, and sunset from 7:01 PM to 7:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:427:01
212.46:417:02
312.46:397:03
412.46:387:03
512.56:377:04
612.56:357:05
712.56:347:06
812.66:337:06
912.66:317:07
1012.66:307:08
1112.76:297:09
1212.76:287:09
1312.76:267:10
1412.86:257:11
1512.86:247:12
1612.86:237:13
1712.96:227:13
1812.96:207:14
1912.96:197:15
2013.06:187:16
2113.06:177:17
2213.06:167:17
2313.16:157:18
2413.16:147:19
2513.16:137:20
2613.26:127:21
2713.26:117:22
2813.26:107:23
2913.26:097:23
3013.36:087:24
3113.36:077:25

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.65 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 7.31 kWh/m² in December across the year — October's 5.65 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.7Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
226.0Bright
236.0Intense
246.0Intense
256.1Intense
266.1Intense
276.2Intense
286.2Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in October

Is October a good time to visit Rosario?

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

7.1
Sightseeing
3rd-best month of the year
5.8
Beach & pool
6th-best month of the year

October is one of the better times to visit Rosario for general sightseeing.

What to pack for Rosario in October

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

In October, Rosario sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Rosario in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rosario peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme

Air quality in Rosario 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 Rosario is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (April, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2220 µg/m³Apr 157 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb8Good
Mar8Good
Apr7Good
May8Good
Jun10Good
Jul13Moderate
Aug20Moderate
Sep19Moderate
Oct10Good
Nov8Good
Dec8Good
Location & terrain

Where is Rosario?

Rosario sits at 32.9°S, 60.6°W, 38 m above sea level, in Argentina. The nearest listed city is Gobernador Gálvez, 9.0 km away.

Topography around Rosario

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

Within 3 km, the terrain around Rosario has only modest variations in elevation — a maximum elevation change of 41 m around an average of 19 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 121 m.

The land around Rosario is covered by artificial surfaces (53%) and water (21%) within 3 km, wetland (30%) and grassland (20%) within 16 km, and cropland (58%) and wetland (24%) within 80 km.

3 km
41 m
16 km
57 m
80 km
121 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Gobernador Gálvez 9.0 km · Granadero Baigorria 12 km · Pérez 13 km · Capitán Bermúdez 16 km · Arroyo Seco 26 km · Villa Constitución 43 km · Carcarañá 49 km · Casilda 50 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 Rosario (-32.9468°, -60.6393°, elevation 38 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).