Cosquín weather in September

In September, Cosquín sees average daytime highs of 20°C and overnight lows near 8°C, with 40 mm of precipitation across 6 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 21°C by the end. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Cosquín's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Cosquín's year-round climate.

Daytime high
20°
8th warmest
Overnight low
4th coldest
Precipitation
40 mm
6 wet days
Daylight
11 h 48 min
7:18 AM – 7:07 PM
Cloud cover
38%
3rd clearest
Wind
9 km/h
3rd windiest
Solar energy
5.15 kWh/m²
Travel score
7.2
out of 10

Cosquín is human settlement in Argentina.

Density
716/km²
people per km²
Founded
1876

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 21°C by the end.

A typical September day in Cosquín reaches about 20°C in the afternoon and slips back to 8°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 27°C. Set against its neighbours, September runs about 2°C warmer than August and about 3°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1197
2197
3197
4197
5197
6197
7197
8197
9197
10207
11207
12207
13207
14207
15207
16207
17208
18208
19208
20208
21208
22208
23218
24218
25218
26218
27218
28219
29219
30219

Cosquín weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 16°1271413.86.1
Feb26° / 16°11413.113.16.3
Mar24° / 14°11612.712.26.7
Apr21° / 11°729.311.36.8
May18° / 346.410.46.3
Jun16° / 173.5105.8
Jul15° / 153.610.25.7
Aug18° / 203.110.97.1
Sep20° / 40611.87.2
Oct22° / 11°8710.612.86.9
Nov25° / 13°10812.413.66.7
Dec26° / 15°13314.9146.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 29%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37129
47228
57228
67228
77228
87228
97327
107426
117426
127525
137525
147525
157525
167525
177426
187426
197327
207228
217228
227129
237030
246931
256832
266832
276634
286634
296535
306535

Chance of precipitation in September

Any precipitation

Cosquín gets around 40 mm of rain and snow over 6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 20% and peaks near 27% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
116
216
317
417
517
618
718
818
918
1018
1118
1218
1318
1418
1518
1618
1718
1818
1919
2020
2120
2221
2322
2423
2524
2625
2725
2826
2926
3027

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19550
29550
39550
49550
59550
69550
79550
89550
99640
109640
119640
129640
139640
149640
159730
169730
179730
189640
199640
209640
219640
229640
239451
249451
259451
269361
279361
289271
299271
309271

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 18 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over September. Sunrise moves from 7:38 AM to 6:59 AM, and sunset from 6:58 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.37:386:58
211.47:366:58
311.47:356:59
411.47:346:59
511.57:327:00
611.57:317:01
711.57:307:01
811.67:297:02
911.67:277:02
1011.67:267:03
1111.77:257:04
1211.77:237:04
1311.77:227:05
1411.77:217:05
1511.87:197:06
1611.87:187:07
1711.87:167:07
1811.97:157:08
1911.97:147:08
2011.97:127:09
2112.07:117:10
2212.07:107:10
2312.07:087:11
2412.17:077:11
2512.17:067:12
2612.17:047:13
2712.27:037:13
2812.27:027:14
2912.27:007:15
3012.36:597:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.15 kWh/m².

For context, solar energy here swings from a low near 2.9 kWh/m² to a high of 7.01 kWh/m² in December across the year — September's 5.15 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.7Bright
34.7Bright
44.7Bright
54.8Bright
64.8Bright
74.9Bright
84.9Bright
95.0Bright
105.0Bright
115.0Bright
125.1Bright
135.1Bright
145.2Bright
155.2Bright
165.2Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Cosquín

In seasonPeak

None of Cosquín's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Cosquín's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Cosquín?

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

7.2
Sightseeing
1st-best month of the year
3.8
Beach & pool
8th-best month of the year

September is one of the better times to visit Cosquín for general sightseeing.

What to pack for Cosquín in September

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

In September, Cosquín sees daytime highs around 20°C and nights near 8°C. Worth packing: a warm layer and sun protection. About 6 days see rain.

a warm layersun protection

UV index in Cosquín in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Cosquín peaks around January 18 at about 14 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 18UV 14Jun 21UV 3
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr7High
May5Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Cosquín in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Cosquín is worst in September — around 20 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (November, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1319 µg/m³Nov 236 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr6Good
May7Good
Jun8Good
Jul8Good
Aug15Moderate
Sep20Moderate
Oct10Good
Nov6Good
Dec6Good
Location & terrain

Where is Cosquín?

Cosquín sits at 31.2°S, 64.5°W, 707 m above sea level, in Argentina. The nearest listed city is Unquillo, 15 km away.

Topography around Cosquín

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

Within 3 km, the terrain around Cosquín has only modest variations in elevation — a maximum elevation change of 244 m around an average of 732 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 894 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,154 m.

The land around Cosquín is covered by trees (35%) and grassland (26%) within 3 km, grassland (46%) and trees (29%) within 16 km, and cropland (35%), grassland (27%) and shrubs (26%) within 80 km.

3 km
244 m
16 km
894 m
80 km
2,154 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Unquillo 15 km · Río Ceballos 16 km · La Calera 16 km · Villa Allende 17 km · La Falda 17 km · Villa Carlos Paz 19 km · Cordoba 32 km · Alta Gracia 45 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 Cosquín (-31.2452°, -64.4657°, elevation 707 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).