Belén weather in December

In December, Belén sees average daytime highs of 29°C and overnight lows near 17°C, with 71 mm of rain across 9.2 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 47% of the time in December, and the air most often feels dry.

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 Belén's 9th-clearest and 2nd-windiest month. For the whole year in context, see Belén's year-round climate.

Daytime high
29°
1st warmest
Overnight low
17°
11th coldest
Rainfall
71 mm
9.2 wet days
Daylight
13 h 42 min
6:32 AM – 8:16 PM
Cloud cover
48%
9th clearest
Wind
6 km/h
2nd windiest
Solar energy
7.54 kWh/m²
Travel score
6.1
out of 10

Belén is city in Catamarca province, Argentina.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Belén reaches about 29°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 33°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12816
22816
32816
42817
52817
62817
72817
82817
92817
102817
112817
122817
132817
142817
152917
162917
172918
182918
192918
202918
212918
222918
232918
242918
252918
262918
272918
282918
292918
302918
312918

Belén weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan28° / 18°9612.8013.65.5
Feb27° / 17°8010.10136.4
Mar26° / 16°7510.4012.26.9
Apr23° / 13°487.5011.47.6
May20° / 295010.77.5
Jun18° / 142.50.210.37.5
Jul18° / 142.50.610.47.4
Aug20° / 162.80.3118.1
Sep22° / 10°304.40.311.88.2
Oct25° / 13°415.9012.78.0
Nov27° / 15°547.3013.47.2
Dec29° / 17°719.2013.76.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27030
37030
46931
56931
66931
76931
86931
96832
106832
116832
126931
136931
146832
156832
166832
176832
186733
196733
206733
216733
226733
236634
246634
256535
266436
276436
286238
296238
306139
316139

Chance of precipitation in December

Any precipitation

Belén gets around 71 mm of rain over 9.2 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 30% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
129
229
329
429
529
629
728
828
928
1028
1128
1228
1328
1428
1528
1628
1729
1829
1929
2030
2130
2231
2331
2432
2532
2633
2733
2834
2934
3034
3135

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
175241
275241
374251
474251
574251
673261
773261
871272
971272
1070282
1169283
1268293
1368293
1466304
1565305
1664315
1763316
1862317
1960328
2059329
21583210
22573211
23553312
24543313
25533314
26513415
27503416
28483417
29473418
30453520
31443521

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 6:29 AM to 6:39 AM, and sunset from 8:07 PM to 8:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:298:07
213.66:298:07
313.66:298:08
413.76:298:09
513.76:298:09
613.76:308:10
713.76:308:11
813.76:308:11
913.76:308:12
1013.76:308:13
1113.76:318:13
1213.76:318:14
1313.76:318:15
1413.76:318:15
1513.76:328:16
1613.76:328:16
1713.76:328:17
1813.76:338:18
1913.76:338:18
2013.76:348:19
2113.86:348:19
2213.86:358:20
2313.86:358:20
2413.76:368:20
2513.76:368:21
2613.76:378:21
2713.76:378:22
2813.76:388:22
2913.76:388:22
3013.76:398:23
3113.76:398:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.54 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 7.54 kWh/m² in December across the year — December's 7.54 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.4Intense
27.4Intense
37.4Intense
47.4Intense
57.4Intense
67.4Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.5Intense
147.5Intense
157.5Intense
167.6Intense
177.6Intense
187.6Intense
197.6Intense
207.6Intense
217.6Intense
227.6Intense
237.6Intense
247.6Intense
257.5Intense
267.5Intense
277.5Intense
287.5Intense
297.5Intense
307.5Intense
317.4Intense
Planning a trip in December

Hazard calendar for Belén

In seasonPeak

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

Belén'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 Belén?

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

6.1
Sightseeing
11th-best month of the year
7.2
Beach & pool
2nd-best month of the year

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

What to pack for Belén in December

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

In December, Belén sees daytime highs around 29°C and nights near 17°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Belén in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 16 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Belén peaks around January 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 18UV 16Jul 10UV 5
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar13Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5Moderate
Aug7Very high
Sep10Very high
Oct13Extreme
Nov14Extreme
Dec16Extreme
Location & terrain

Where is Belén?

Belén sits at 27.6°S, 67.0°W, 1,223 m above sea level, in Argentina. The nearest listed city is Aimogasta, 103 km away.

Topography around Belén

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

Within 3 km, the terrain around Belén has large variations in elevation — a maximum elevation change of 639 m around an average of 1,356 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,489 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,148 m.

The land around Belén is covered by shrubs (60%) within 3 km, shrubs (83%) within 16 km, and bare terrain (40%), shrubs (32%) and grassland (27%) within 80 km.

3 km
639 m
16 km
1,489 m
80 km
4,148 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Aimogasta 103 km · Aguilares 141 km · Santa María 144 km · Catamarca 152 km · San Isidro 156 km · Monteros 160 km · Famaillá 174 km · Chilecito 174 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 Belén (-27.6495°, -67.0263°, elevation 1,223 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).