Monte Caseros weather in September

In September, Monte Caseros sees average daytime highs of 23°C and overnight lows near 12°C, with 111 mm of rain across 7.9 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Monte Caseros's 8th-clearest and 1st-windiest month. For the whole year in context, see Monte Caseros's year-round climate.

Daytime high
23°
8th warmest
Overnight low
12°
4th coldest
Rainfall
111 mm
7.9 wet days
Daylight
11 h 48 min
6:50 AM – 6:39 PM
Cloud cover
50%
8th clearest
Wind
15 km/h
1st windiest
Solar energy
4.62 kWh/m²
Travel score
7.2
out of 10

Monte Caseros is city in Corrientes, Argentina.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Monte Caseros reaches about 23°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 29°C. Set against its neighbours, September runs about 2°C warmer than August and about 3°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12211
22211
32212
42212
52212
62212
72212
82212
92212
102212
112212
122212
132212
142212
152212
162212
172212
182312
192312
202312
212312
222312
232312
242313
252313
262313
272313
282313
292313
302413

How September really feels in Monte Caseros

Once humidity and wind are folded in, September 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

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

Monte Caseros 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
Jan31° / 21°1349.713.74.5
Feb30° / 20°1279.613.14.9
Mar29° / 19°1199.212.26.0
Apr25° / 15°1779.411.37.1
May21° / 12°1047.710.56.9
Jun19° / 10°1057.810.16.4
Jul18° / 856.710.26.6
Aug21° / 10°887.110.97.1
Sep23° / 12°1117.911.87.2
Oct25° / 15°16610.312.76.9
Nov28° / 17°129813.56.6
Dec30° / 19°117913.95.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25743
35743
45644
55644
65545
75545
85545
95545
105545
115644
125644
135743
145644
155644
165743
175743
185842
195842
205842
215842
225842
235842
245743
255743
265644
275545
285446
295347
305248

Chance of precipitation in September

Any precipitation

Monte Caseros gets around 111 mm of rain over 7.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
227
327
427
527
628
728
828
927
1027
1127
1227
1326
1426
1526
1626
1726
1826
1925
2025
2125
2226
2326
2427
2527
2628
2728
2829
2929
3030

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
160181750
259181850
359181850
460181840
560181840
660181840
761181740
861181740
962181730
1062191630
1161191640
1262191540
1363191440
1462201440
1563201340
1663201340
1764201240
1863201250
1963201250
2062211250
2161211251
2259211361
2358221361
2457221461
2557221461
2654231571
2753231671
2853231671
2953231671
3050241781

Wind in September

Winds average 15 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 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 54 minutes over September. Sunrise moves from 7:10 AM to 6:32 AM, and sunset from 6:31 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:106:31
211.47:086:32
311.47:076:32
411.47:066:33
511.57:056:33
611.57:036:34
711.57:026:34
811.67:016:35
911.66:596:36
1011.66:586:36
1111.76:576:37
1211.76:566:37
1311.76:546:38
1411.86:536:38
1511.86:526:39
1611.86:506:39
1711.96:496:40
1811.96:486:41
1911.96:466:41
2011.96:456:42
2112.06:446:42
2212.06:426:43
2312.06:416:43
2412.16:406:44
2512.16:396:45
2612.16:376:45
2712.26:366:46
2812.26:356:46
2912.26:336:47
3012.36:326:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 2.46 kWh/m² to a high of 7.09 kWh/m² in December across the year — September's 4.62 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.2Bright
54.2Bright
64.2Bright
74.3Bright
84.3Bright
94.3Bright
104.4Bright
114.4Bright
124.5Bright
134.5Bright
144.6Bright
154.6Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.8Bright
214.9Bright
224.9Bright
234.9Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.1Bright
305.1Bright
Planning a trip in September

Is September a good time to visit Monte Caseros?

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
5.3
Beach & pool
8th-best month of the year

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

What to pack for Monte Caseros in September

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

In September, Monte Caseros sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

UV index in Monte Caseros 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 Monte Caseros peaks around January 20 at about 13 (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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 20UV 13Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Monte Caseros?

Monte Caseros sits at 30.3°S, 57.6°W, 24 m above sea level, in Argentina. The nearest listed city is Curuzú Cuatiá, 65 km away.

Topography around Monte Caseros

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

Within 3 km, the terrain around Monte Caseros has only modest variations in elevation — a maximum elevation change of 29 m around an average of 44 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 148 m.

The land around Monte Caseros is covered by grassland (36%) and water (30%) within 3 km, grassland (51%) and trees (22%) within 16 km, and grassland (74%) within 80 km.

3 km
29 m
16 km
59 m
80 km
148 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Curuzú Cuatiá 65 km · Chajarí 65 km · Uruguaiana 76 km · Paso de los Libres 80 km · Artigas 113 km · Quaraí 115 km · Mercedes 126 km · Salto 130 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 Monte Caseros (-30.2518°, -57.6354°, elevation 24 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).