Eldorado weather in December

In December, Eldorado sees average daytime highs of 30°C and overnight lows near 20°C, with 193 mm of rain across 15.1 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 36% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 30 min at the start of December to 13 h 36 min by month's end. Set against the rest of the year, December is Eldorado's 10th-clearest and 9th-windiest month. For the whole year in context, see Eldorado's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
20°
10th coldest
Rainfall
193 mm
15.1 wet days
Daylight
13 h 36 min
5:45 AM – 7:24 PM
Cloud cover
58%
10th clearest
Wind
8 km/h
9th windiest
Solar energy
6.33 kWh/m²
Travel score
4.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Eldorado reaches about 30°C in the afternoon and slips back to 20°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 34°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13019
23019
33019
43019
53019
63019
73020
83020
93020
103020
113020
123020
133020
143020
153020
163020
173020
183120
193120
203120
213120
223120
233120
243120
253120
263121
273121
283121
293121
303121
313121

How December really feels in Eldorado

Once humidity and wind are folded in, December averages 15 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
15
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Eldorado weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 2nd-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25248
35248
45248
55149
65248
75248
85347
95248
105347
115347
125347
135446
145446
155446
165446
175446
185446
195446
205347
215347
225248
235248
245149
255050
265050
274951
284951
294951
304951
314852

Chance of precipitation in December

Any precipitation

Eldorado gets around 193 mm of rain over 15.1 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 48% and peaks near 54% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
141
242
343
443
543
644
744
844
945
1045
1145
1246
1346
1447
1547
1648
1748
1848
1949
2050
2150
2251
2352
2453
2554
2654
2754
2854
2954
3054
3153

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16102343180
25102244190
35102244200
4592144210
5592144220
6592143220
7492043230
8492043240
9492043250
10392042260
11392042270
12392041270
13281942290
14281941290
15281941300
16281940310
17171940330
18171939340
19171839350
20161838370
21161737380
22161736400
23151635420
24151635430
25151534450
26151533460
27141532470
28141432480
29141431490
30141431500
31141430501

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 30 min at the start of December to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:42 AM to 5:53 AM, and sunset from 7:14 PM to 7:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:427:14
213.55:427:15
313.65:427:16
413.65:427:16
513.65:427:17
613.65:437:18
713.65:437:18
813.65:437:19
913.65:437:20
1013.65:437:20
1113.65:447:21
1213.65:447:22
1313.65:447:22
1413.65:457:23
1513.65:457:23
1613.65:457:24
1713.75:467:25
1813.75:467:25
1913.75:467:26
2013.75:477:26
2113.75:477:27
2213.75:487:27
2313.75:487:28
2413.75:497:28
2513.75:497:29
2613.75:507:29
2713.75:507:29
2813.65:517:30
2913.65:517:30
3013.65:527:30
3113.65:537:31

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.33 kWh/m² — the sunniest month for solar.

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 — December's 6.33 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Is December a good time to visit Eldorado?

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

4.3
Sightseeing
10th-best month of the year
6.1
Beach & pool
7th-best month of the year

December 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 December

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

In December, Eldorado sees daytime highs around 30°C and nights near 20°C. Pack light clothes, rain gear and sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Eldorado in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). 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 December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December 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
December 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).