Las Breñas weather in September

In September, Las Breñas sees average daytime highs of 27°C and overnight lows near 14°C, with 56 mm of rain across 6.4 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°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 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Las Breñas's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Las Breñas's year-round climate.

Daytime high
27°
7th warmest
Overnight low
14°
5th coldest
Rainfall
56 mm
6.4 wet days
Daylight
11 h 48 min
7:03 AM – 6:54 PM
Cloud cover
40%
2nd clearest
Wind
15 km/h
2nd windiest
Solar energy
4.94 kWh/m²
Travel score
7.4
out of 10

Las Breñas is municipality of Argentina.

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 26°C in the first days to 28°C by the end.

A typical September day in Las Breñas reaches about 27°C in the afternoon and slips back to 14°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 36°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
12613
22613
32614
42614
52614
62614
72614
82614
92614
102614
112714
122714
132714
142714
152714
162714
172714
182714
192714
202715
212715
222715
232715
242715
252815
262815
272815
282815
292816
302816

How September really feels in Las Breñas

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.

Las Breñas weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°13410.913.53.5
Feb32° / 22°12710.2134.1
Mar30° / 20°13410.412.25.1
Apr27° / 17°109911.46.8
May23° / 14°537.410.77.3
Jun21° / 12°36610.37.1
Jul21° / 10°29510.57.6
Aug25° / 12°364.2118.2
Sep27° / 14°566.411.87.4
Oct29° / 17°1139.812.65.7
Nov31° / 19°1269.313.34.9
Dec32° / 21°14110.213.73.9

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 11% of September, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17327
27327
37327
47228
57228
67129
77129
87129
97030
107030
116931
126931
136931
146931
156832
166832
176733
186634
196634
206535
216535
226436
236436
246238
256238
266238
276139
286139
296139
306040

Chance of precipitation in September

Any precipitation

Las Breñas gets around 56 mm of rain over 6.4 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 21% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
118
218
319
419
520
620
720
820
920
1020
1120
1220
1320
1420
1520
1620
1720
1820
1920
2020
2121
2221
2322
2423
2523
2624
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 62% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
166191230
266191230
365191240
465191240
566191140
666191140
766191140
866191140
965191150
1065191150
1165191150
1265191150
1366181150
1466181150
1565181250
1665181250
1765181250
1865181250
1964181260
2064181260
2163181360
2262181370
2361181470
2458191580
2557191590
2656191690
27541917100
28531917110
29511918111
30501918121

Wind in September

Winds average 15 km/h in September.

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 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over September. Sunrise moves from 7:21 AM to 6:47 AM, and sunset from 6:47 PM to 7:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:216:47
211.57:206:48
311.57:196:48
411.57:186:49
511.57:166:49
611.67:156:49
711.67:146:50
811.67:136:50
911.77:126:51
1011.77:116:51
1111.77:096:52
1211.77:086:52
1311.87:076:53
1411.87:066:53
1511.87:056:53
1611.87:036:54
1711.97:026:54
1811.97:016:55
1911.97:006:55
2012.06:596:56
2112.06:576:56
2212.06:566:57
2312.06:556:57
2412.16:546:58
2512.16:536:58
2612.16:516:59
2712.16:506:59
2812.26:496:59
2912.26:487:00
3012.26:477:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.94 kWh/m².

For context, solar energy here swings from a low near 2.69 kWh/m² to a high of 6.81 kWh/m² in December across the year — September's 4.94 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.1Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Is September a good time to visit Las Breñas?

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

7.4
Sightseeing
3rd-best month of the year
7.4
Beach & pool
1st-best month of the year

September is one of the better times to visit Las Breñas for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Las Breñas in September

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

In September, Las Breñas sees daytime highs around 27°C and nights near 14°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Las Breñas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Las Breñas peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 19UV 14Jun 23UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov12Extreme
Dec13Extreme

Air quality in Las Breñas 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 Las Breñas is worst in August — around 21 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (April, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2121 µg/m³Apr 236 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar8Good
Apr6Good
May6Good
Jun7Good
Jul12Moderate
Aug21Moderate
Sep19Moderate
Oct12Good
Nov9Good
Dec8Good
Location & terrain

Where is Las Breñas?

Las Breñas sits at 27.1°S, 61.1°W, 104 m above sea level, in Argentina. The nearest listed city is Charata, 18 km away.

Topography around Las Breñas

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

Within 3 km, the terrain around Las Breñas has only modest variations in elevation — a maximum elevation change of 11 m around an average of 100 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 21 m; within 80 km, only modest variations in elevation — a maximum elevation change of 126 m.

The land around Las Breñas is covered by cropland (37%), trees (25%) and artificial surfaces (21%) within 3 km, cropland (65%) and trees (30%) within 16 km, and cropland (57%) and trees (34%) within 80 km.

3 km
11 m
16 km
21 m
80 km
126 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Charata 18 km · General Pinedo 33 km · Villa Ángela 66 km · Presidencia Roque Sáenz Peña 72 km · Quitilipi 89 km · Machagai 104 km · Tres Isletas 105 km · Juan José Castelli 135 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 Las Breñas (-27.0882°, -61.0822°, elevation 104 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).