Eldorado weather in September

In September, Eldorado sees average daytime highs of 25°C and overnight lows near 15°C, with 164 mm of rain across 10.5 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Eldorado's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Eldorado's year-round climate.

Daytime high
25°
8th warmest
Overnight low
15°
5th coldest
Rainfall
164 mm
10.5 wet days
Daylight
11 h 48 min
6:37 AM – 6:28 PM
Cloud cover
49%
3rd clearest
Wind
10 km/h
2nd windiest
Solar energy
4.67 kWh/m²
Travel score
6.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical September day in Eldorado reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 32°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32514
42515
52515
62515
72515
82515
92515
102515
112515
122515
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242615
252615
262616
272616
282616
292616
302616

How September really feels in Eldorado

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.

Eldorado weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°16315.913.54.0
Feb30° / 21°16014.912.94.2
Mar29° / 20°14412.812.25.1
Apr27° / 17°1489.911.46.7
May23° / 14°1719.710.76.9
Jun21° / 13°1639.710.46.6
Jul21° / 12°1359.410.56.8
Aug24° / 13°967.611.17.6
Sep25° / 15°16410.511.86.8
Oct27° / 17°22013.812.65.9
Nov29° / 18°16711.813.35.4
Dec30° / 20°19315.113.64.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16535
26535
36535
46337
56337
66238
76238
86139
96139
106040
116040
126040
135941
145941
155941
165842
175743
185743
195644
205644
215545
225446
235446
245347
255248
265149
275149
284951
294852
304852

Chance of precipitation in September

Any precipitation

Eldorado gets around 164 mm of rain over 10.5 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 35% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
126
226
327
427
528
629
730
830
931
1032
1133
1233
1334
1435
1536
1636
1737
1838
1938
2039
2139
2240
2340
2440
2541
2641
2741
2841
2941
3041

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
139322440
239322550
338322550
438322560
537312660
637312660
736312670
835312770
935302770
1034302880
1134302880
1233302890
1333292890
14332929100
15322829100
16322829100
17322729110
18322730110
19322630120
20312630120
21312631130
22302531130
23292531140
24282532150
25272532161
26262433171
27252433171
28242434181
29232434191
30222334201

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 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 42 minutes over September. Sunrise moves from 6:55 AM to 6:21 AM, and sunset from 6:22 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:556:22
211.56:536:22
311.56:526:23
411.56:516:23
511.66:506:24
611.66:496:24
711.66:486:24
811.66:476:25
911.76:466:25
1011.76:446:26
1111.76:436:26
1211.76:426:26
1311.86:416:27
1411.86:406:27
1511.86:396:28
1611.86:376:28
1711.96:366:29
1811.96:356:29
1911.96:346:29
2012.06:336:30
2112.06:326:30
2212.06:306:31
2312.06:296:31
2412.16:286:32
2512.16:276:32
2612.16:266:33
2712.16:256:33
2812.26:236:33
2912.26:226:34
3012.26:216:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.67 kWh/m².

For context, solar energy here swings from a low near 2.73 kWh/m² to a high of 6.33 kWh/m² in December across the year — September's 4.67 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
Planning a trip in September

Is September a good time to visit Eldorado?

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

6.8
Sightseeing
3rd-best month of the year
6.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Eldorado for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Eldorado in September

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

In September, Eldorado sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Eldorado 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 Eldorado peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 19UV 14Jun 23UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5Moderate
Aug6High
Sep7Very high
Oct9Very high
Nov11Extreme
Dec13Extreme

Air quality in Eldorado 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 Eldorado is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1619 µg/m³Mar 157 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr8Good
May8Good
Jun8Good
Jul10Good
Aug14Moderate
Sep20Moderate
Oct13Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Eldorado?

Eldorado sits at 26.4°S, 54.6°W, 237 m above sea level, in Argentina. The nearest listed city is Montecarlo, 23 km away.

Topography around Eldorado

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

Within 3 km, the terrain around Eldorado has only modest variations in elevation — a maximum elevation change of 104 m around an average of 215 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 271 m; within 80 km, large variations in elevation — a maximum elevation change of 696 m.

The land around Eldorado is covered by trees (73%) within 3 km, trees (78%) within 16 km, and trees (70%) and cropland (23%) within 80 km.

3 km
104 m
16 km
271 m
80 km
696 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Montecarlo 23 km · Puerto Esperanza 42 km · Colonia Wanda 48 km · San Vicente 54 km · San Pedro 56 km · Puerto Rico 60 km · Iguazu 90 km · Jardín América 93 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 Eldorado (-26.4045°, -54.6185°, elevation 237 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).