Santiago del Estero weather in December

In December, Santiago del Estero sees average daytime highs of 33°C and overnight lows near 22°C, with 130 mm of rain across 11.7 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 34°C by the end. The sky is clear or mostly clear about 35% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 36 min at the start of December to 13 h 42 min by month's end. Set against the rest of the year, December is Santiago del Estero's 11th-clearest and 5th-windiest month. For the whole year in context, see Santiago del Estero's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
22°
10th coldest
Rainfall
130 mm
11.7 wet days
Daylight
13 h 48 min
6:21 AM – 8:06 PM
Cloud cover
54%
11th clearest
Wind
11 km/h
5th windiest
Solar energy
6.39 kWh/m²
Travel score
3.3
out of 10

Santiago del Estero is the capital of Santiago del Estero Province in northern Argentina.

Density
119/km²
people per km²
Founded
1553

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 32°C in the first days to 34°C by the end.

A typical December day in Santiago del Estero reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 39°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13221
23221
33221
43221
53221
63221
73221
83321
93321
103322
113322
123322
133322
143322
153322
163322
173322
183322
193422
203422
213422
223422
233423
243423
253423
263423
273423
283423
293423
303423
313423

How December really feels in Santiago del Estero

Once humidity and wind are folded in, December averages 31 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
31
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.

Santiago del Estero 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
Jan33° / 23°14712.813.63.2
Feb32° / 22°11610.6133.9
Mar30° / 20°12411.312.25.0
Apr27° / 17°688.311.47.0
May23° / 13°224.610.67.8
Jun21° / 10°153.710.37.5
Jul21° / 112.510.48.1
Aug25° / 11°122118.7
Sep28° / 14°283.911.87.6
Oct30° / 18°607.312.75.5
Nov32° / 20°869.313.44.3
Dec33° / 22°13011.713.73.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75743
85743
95842
105842
115842
125941
135842
145941
155941
165842
175842
185842
195842
205743
215743
225743
235644
245644
255545
265545
275446
285446
295446
305347
315347

Chance of precipitation in December

Any precipitation

Santiago del Estero gets around 130 mm of rain over 11.7 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 38% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
538
638
737
837
937
1037
1137
1237
1337
1437
1537
1637
1737
1837
1937
2038
2138
2238
2338
2439
2539
2639
2739
2840
2940
3040
3141

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 49% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
117192925100
216182926100
316182927100
415182927110
515182828110
614182728120
714192729120
814182629130
913182530130
1013182530140
1113182430140
1212182431150
1312182431150
1411172431160
1511172431160
1611162531170
1711162430181
1811152430191
1911152430201
2010142430211
2110132430221
2210122430231
239122429251
249112429261
258112429271
268102428281
278102428292
287102428302
297102428302
306102328312
316102328322

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 36 min at the start of December to 13 h 42 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 6:18 AM to 6:28 AM, and sunset from 7:56 PM to 8:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:187:56
213.66:187:57
313.76:187:57
413.76:187:58
513.76:187:59
613.76:187:59
713.76:188:00
813.76:198:01
913.76:198:01
1013.76:198:02
1113.76:198:03
1213.76:198:03
1313.76:208:04
1413.76:208:05
1513.76:208:05
1613.86:218:06
1713.86:218:06
1813.86:218:07
1913.86:228:07
2013.86:228:08
2113.86:238:08
2213.86:238:09
2313.86:248:09
2413.86:248:10
2513.86:258:10
2613.86:258:11
2713.86:268:11
2813.86:268:11
2913.76:278:12
3013.76:278:12
3113.76:288:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.39 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.9 kWh/m² to a high of 6.39 kWh/m² in December across the year — December's 6.39 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in December

Hazard calendar for Santiago del Estero

In seasonPeak

In December, Santiago del Estero sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Santiago del Estero's rainy season runs November–April, when most of the year's rain falls.

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

Is December a good time to visit Santiago del Estero?

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

3.3
Sightseeing
11th-best month of the year
6.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Santiago del Estero. The water and warmth also suit a beach or pool day.

What to pack for Santiago del Estero in December

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

In December, Santiago del Estero sees daytime highs around 33°C and nights near 22°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

light clothessun protectionrain gear

UV index in Santiago del Estero 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 Santiago del Estero peaks around January 18 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 18UV 14Jun 23UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar11Extreme
Apr7Very high
May6High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct11Extreme
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Santiago del Estero?

Santiago del Estero sits at 27.8°S, 64.3°W, 176 m above sea level, in Argentina. The nearest listed city is Termas de Río Hondo, 68 km away.

Topography around Santiago del Estero

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

Within 3 km, the terrain around Santiago del Estero has only modest variations in elevation — a maximum elevation change of 24 m around an average of 186 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 105 m; within 80 km, significant variations in elevation — a maximum elevation change of 595 m.

The land around Santiago del Estero is covered by artificial surfaces (78%) within 3 km, trees (44%) within 16 km, and trees (44%) and shrubs (34%) within 80 km.

3 km
24 m
16 km
105 m
80 km
595 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Termas de Río Hondo 68 km · Bella Vista 133 km · Aguilares 139 km · Alderetes 140 km · Famaillá 140 km · Monteros 141 km · San Miguel de Tucuman 144 km · Yerba Buena 150 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 Santiago del Estero (-27.8005°, -64.2629°, elevation 176 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).